chemical reaction Crossword Puzzles

Chemical Reactions and The Law of Conservation of Mass 2025-05-07

Chemical Reactions and The Law of Conservation of Mass crossword puzzle
Across
  1. A substance that speeds up a chemical reaction without being consumed.
  2. The process of ensuring that the number of atoms is the same on both sides of a chemical equation.
  3. A reaction that absorbs energy from its surroundings.
  4. A number placed in front of a compound or element in a chemical equation to balance it.
  5. A symbolic representation of a chemical reaction showing the reactants and products.
  6. The new substances formed as a result of a chemical reaction.
  7. This law states that mass is neither created nor destroyed in a chemical reaction.
Down
  1. The substances that undergo a chemical change in a reaction.
  2. A reaction that releases energy, usually in the form of heat.
  3. The minimum energy required for a chemical reaction to occur.
  4. A type of chemical reaction where a single compound breaks down into two or more simpler substances.
  5. The calculation of reactants and products in a chemical reaction.
  6. A group of atoms bonded together.
  7. A reaction where a substance combines with oxygen, often releasing energy in the form of heat and light.
  8. A type of chemical reaction where two or more substances combine to form a new compound.

15 Clues: A group of atoms bonded together. • A reaction that absorbs energy from its surroundings. • The substances that undergo a chemical change in a reaction. • A reaction that releases energy, usually in the form of heat. • The minimum energy required for a chemical reaction to occur. • The new substances formed as a result of a chemical reaction. • ...

Made in the Stars 2013-11-23

Made in the Stars crossword puzzle
Across
  1. The speed of a reaction is known as the ____ of a reaction
  2. The only non-metal that can conduct
  3. Sulphide The product of a reaction between lead and sulphur
  4. Only metals can _______ electricity
  5. A ___________ change is a sign of a chemical reaction
  6. A chemical we add to increase the rate of a reaction
  7. Increasing the temperature will ________the rate of a reaction
  8. A ______ change is a sign of a chemical reaction
Down
  1. Used instead of an = sign in word equations
  2. size Decreasing the ____________ will increase the rate of a reaction
  3. A method of extracting elements
  4. Chemical that comes out of a chemical reaction
  5. What is element 92
  6. Chemical that goes into a chemical reaction
  7. The only element that is liquid at room temperature

15 Clues: What is element 92 • A method of extracting elements • The only non-metal that can conduct • Only metals can _______ electricity • Used instead of an = sign in word equations • Chemical that goes into a chemical reaction • Chemical that comes out of a chemical reaction • A ______ change is a sign of a chemical reaction • The only element that is liquid at room temperature • ...

Physical Science Unit 7 Crossword 2021-12-15

Physical Science Unit 7 Crossword crossword puzzle
Across
  1. A substance that increases the rate of a chemical reaction
  2. A reaction involving an acid and a base
  3. A chemical reaction with one substance switching from another substance
  4. A mixture with substances evenly distributed
  5. More than the maximum amount of a solute that can dissolve in a solvent
  6. A chemical reaction with two substances switching from one substance to another
  7. A substance that produces hydroxide ions
  8. The amount of time it takes for half a nuclear sample to decay
  9. A substance that produces hydrogen or hydronium ions
  10. A chemical reaction with two substances combining to make a large particle
  11. Describes how well a substance dissolves into a solution.
  12. The breakdown of an unstable atom into a more stable atom
  13. The substance that does the dissolving
  14. Nuclear decay that produces a helium atom
Down
  1. A chemical reaction with a hydrocarbon and oxygen producing water and carbon dioxide
  2. Nuclear decay that produces a burst of energy
  3. Compounds produced in a reaction
  4. The maximum amount of a solute that can dissolve in a solvent
  5. Less than the maximum amount of a solute that can dissolve in a solvent
  6. The breaking of a large atom into two or more smaller atoms
  7. The written expression of a chemical reaction
  8. The substance dissolved into a solution
  9. Nuclear decay that produces an electron
  10. A chemical reaction with a large particle that breaks down into two smaller substances
  11. A reaction that absorbs energy from the environment
  12. Compounds undergoing reaction
  13. The combination of two or more smaller atoms into one larger atom
  14. A reaction that releases energy to the environment

28 Clues: Compounds undergoing reaction • Compounds produced in a reaction • The substance that does the dissolving • A reaction involving an acid and a base • The substance dissolved into a solution • Nuclear decay that produces an electron • A substance that produces hydroxide ions • Nuclear decay that produces a helium atom • A mixture with substances evenly distributed • ...

Chapter 3.4 Review 2021-10-29

Chapter 3.4 Review crossword puzzle
Across
  1. the number that is placed in front of a chemical formula
  2. describes how fast a reaction occurs
  3. the process in which atoms are rearranged to produce new substances
  4. more reactants in a given volume
  5. uses chemical symbols and numbers to represent a given substance
  6. states that matter is neither created nor destroyed in ordinary physical and chemical changes
  7. energy released to the surroundings, reation mixtures often feel warm
  8. numbers written below and to the right of a chemical symbol
  9. an arrow that points from reactants to the products
  10. substances that participate in a chemical reaction
Down
  1. particles move faster when this is higher which allows for more particle collision and a higher rate of reaction
  2. an expression that uses symbols to show the relationship between the starting substances and the substances that are produced by a chemical reaction
  3. states that energy cannot be created or destroyed, energy can change form
  4. what you would do to a chemical equation in order to ensure that the reactants and products contain the same number of atoms of each
  5. substances formed in a reaction
  6. a solid that can be formed during a chemical reaction, a sign that a chemical reaction has occurred
  7. requires an input of energy, energy taken in from surroundings, reactions mixtures often feel cold
  8. subsatnce that changes the rate of a chemical reaction without being used up or changed very much
  9. to increase this, you can crush or grind solids

19 Clues: substances formed in a reaction • more reactants in a given volume • describes how fast a reaction occurs • to increase this, you can crush or grind solids • substances that participate in a chemical reaction • an arrow that points from reactants to the products • the number that is placed in front of a chemical formula • ...

Chemical Reactions Check In 2025-02-28

Chemical Reactions Check In crossword puzzle
Across
  1. Organized arrangement of elements by atomic number (8, 5).
  2. Chemical formula for table salt (4).
  3. Element essential for combustion and respiration (6).
  4. Substances formed as a result of a chemical reaction (8).
  5. Neutral subatomic particle found in the nucleus (7).
  6. Common table salt formed from sodium and chlorine (6, 8).
  7. Symbol used in a word equation to show a reaction occurring (5).
  8. Element with the chemical symbol H2 (8).
  9. Reaction that releases heat to surroundings (10).
  10. Measurement system for acidity and alkalinity (2, 5).
  11. Substances that undergo a chemical change in a reaction (9).
  12. Element with the chemical symbol Zn (4).
  13. Combination of substances that are not chemically bonded (6).
  14. Compound with the chemical formula CO2 (6, 7).
  15. Reaction involving oxygen that releases heat and light (10).
  16. Substance formed when two or more elements chemically combine (8).
Down
  1. Representation of a chemical reaction using element symbols (6, 8).
  2. Common strong acid with the formula HCl (12, 4).
  3. Positively charged subatomic particle found in the nucleus (6).
  4. Reaction that forms an insoluble solid from two solutions (12).
  5. The name for the table that arranges elements (8).
  6. Compound with the chemical formula HCl (12, 4).
  7. Compound with the chemical formula H2O (5).
  8. Representation of a chemical reaction using full chemical names (4, 8).
  9. Element with the chemical symbol Cu (6).
  10. Element found in all living things (6).
  11. Metal that rusts when exposed to oxygen and water (4).
  12. Pure substance made of only one type of atom (7).
  13. Negatively charged particle orbiting an atom’s nucleus (8).
  14. Smallest unit of matter that retains an element's properties (4).

30 Clues: Chemical formula for table salt (4). • Element found in all living things (6). • Element with the chemical symbol H2 (8). • Element with the chemical symbol Cu (6). • Element with the chemical symbol Zn (4). • Compound with the chemical formula H2O (5). • Compound with the chemical formula CO2 (6, 7). • Compound with the chemical formula HCl (12, 4). • ...

Chemistry Crossword 2014-11-04

Chemistry Crossword crossword puzzle
Across
  1. an experiment in which all reactant and all product of a chemical reaction are accounted for.
  2. mass of one atom in an element
  3. group 2 on the periodic table
  4. a slow chemical change when oxygen reacts with metal
  5. metal+non-metal
  6. Non-reversible
  7. natural gases
  8. a new substance produced in a chemical reaction between reactant
  9. non-metal+non metal
Down
  1. chemical which absorbs heat is
  2. a chemical reaction that takes place in the cell of your body
  3. substance that helps chemical reaction to proceed more quickly
  4. cloudy mixture
  5. number of protons in the nucleus of one of an element
  6. Reversible
  7. a substance that react's with other substance to create a new substance with a different properties
  8. the smallest part of an element that is representative of the element
  9. ability of a substance to conduct electricty or heat
  10. chemical which release heat energy is
  11. very reactive material
  12. chemical reaction that occurs when oxygen reacts with other substance which gives of energy
  13. neutral particle
  14. negative charges
  15. positive charges

24 Clues: Reversible • natural gases • cloudy mixture • Non-reversible • metal+non-metal • neutral particle • negative charges • positive charges • non-metal+non metal • very reactive material • group 2 on the periodic table • chemical which absorbs heat is • mass of one atom in an element • chemical which release heat energy is • a slow chemical change when oxygen reacts with metal • ...

Chemistry Crossword 2015-12-01

Chemistry Crossword crossword puzzle
Across
  1. chemical combination of two or more elements in a specific ratio
  2. group 17 elements in the periodic table
  3. change that results when two or more substances react to create a different substance or substances
  4. group one elements in the periodic table not including hydrogen
  5. a solution in which water is the solvent
  6. mass of one atom of an element
  7. chemical reaction that absorbs energy
  8. catalyst involved in chemical reactions in living things
  9. chemical reaction that releases energy
  10. the smallest part of an element that is representative of that element
  11. number of protons in the nucleus of one atom of an element
  12. measure of atomic mass
Down
  1. a reaction that takes place when two or more substances react to form new substances
  2. group two elements in the periodic table
  3. invisible negatively charged particle that orbits the nucleus of an atom
  4. substance that helps a chemical reaction
  5. pure substance that cannot be broken down into other substances
  6. combination of symbols that represent a compound

18 Clues: measure of atomic mass • mass of one atom of an element • chemical reaction that absorbs energy • chemical reaction that releases energy • group 17 elements in the periodic table • group two elements in the periodic table • a solution in which water is the solvent • substance that helps a chemical reaction • combination of symbols that represent a compound • ...

Reaction Quest: A Chemistry Crossword 2025-05-01

Reaction Quest: A Chemistry Crossword crossword puzzle
Across
  1. → A reaction where a substance burns in oxygen to release heat and light
  2. → An insoluble solid formed during a double displacement reaction
  3. → A reaction between an acid and a base forming salt and water
  4. → A chemical equation with equal numbers of atoms on both sides
  5. → Gain of electrons or loss of oxygen in a chemical reaction
  6. → The gradual destruction of metals by chemical reactions with the environment
  7. → A substance that speeds up a chemical reaction without being consumed
  8. → A reaction where a single compound breaks down into simpler substances
Down
  1. → A reaction where a more reactive element replaces a less reactive one
  2. → The starting substances in a chemical reaction
  3. → The substances formed after a chemical reaction
  4. → A reaction that absorbs heat from its surroundings
  5. → The specific corrosion of iron forming reddish-brown flakes
  6. → A reaction that releases heat to its surroundings
  7. → Loss of electrons or gain of oxygen in a chemical reaction

15 Clues: → The starting substances in a chemical reaction • → The substances formed after a chemical reaction • → A reaction that releases heat to its surroundings • → A reaction that absorbs heat from its surroundings • → Gain of electrons or loss of oxygen in a chemical reaction • → Loss of electrons or gain of oxygen in a chemical reaction • ...

Types of reactions 2025-04-27

Types of reactions crossword puzzle
Across
  1. : Adjusting coefficients to conserve mass in a chemical equation
  2. : Reaction where a single compound breaks into simpler substances
  3. : Reaction where two or more substances combine to form a product
  4. : Reaction involving both oxidation and reduction
  5. : Process where a substance gains oxygen
  6. : Charged particles formed by gain or loss of electrons
  7. : Reaction that forms an insoluble solid from two solutions
  8. : Slow destruction of metals by chemical reaction with environment
  9. : Substance that speeds up a chemical reaction without being consumed
Down
  1. : Reaction that absorbs heat energy
  2. : Solid formed in a solution during a chemical reaction
  3. : Reaction where one element replaces another in a compound
  4. : Reaction where two compounds exchange ions to form two new compounds
  5. : A representation of a chemical reaction using symbols
  6. : Reaction that releases heat energy
  7. : Solution where water is the solvent

16 Clues: : Reaction that absorbs heat energy • : Reaction that releases heat energy • : Solution where water is the solvent • : Process where a substance gains oxygen • : Reaction involving both oxidation and reduction • : Solid formed in a solution during a chemical reaction • : A representation of a chemical reaction using symbols • ...

Reaction Quest: A Chemistry Crossword by Risham 10S 2025-05-01

Reaction Quest: A Chemistry Crossword by Risham 10S crossword puzzle
Across
  1. → A reaction where a substance burns in oxygen to release heat and light
  2. → An insoluble solid formed during a double displacement reaction
  3. → A reaction between an acid and a base forming salt and water
  4. → A chemical equation with equal numbers of atoms on both sides
  5. → Gain of electrons or loss of oxygen in a chemical reaction
  6. → The gradual destruction of metals by chemical reactions with the environment
  7. → A substance that speeds up a chemical reaction without being consumed
  8. → A reaction where a single compound breaks down into simpler substances
Down
  1. → A reaction where a more reactive element replaces a less reactive one
  2. → The starting substances in a chemical reaction
  3. → The substances formed after a chemical reaction
  4. → A reaction that absorbs heat from its surroundings
  5. → The specific corrosion of iron forming reddish-brown flakes
  6. → A reaction that releases heat to its surroundings
  7. → Loss of electrons or gain of oxygen in a chemical reaction

15 Clues: → The starting substances in a chemical reaction • → The substances formed after a chemical reaction • → A reaction that releases heat to its surroundings • → A reaction that absorbs heat from its surroundings • → Gain of electrons or loss of oxygen in a chemical reaction • → Loss of electrons or gain of oxygen in a chemical reaction • ...

TYPES OF CHEMICAL REACTIONS 2024-04-30

TYPES OF CHEMICAL REACTIONS crossword puzzle
Across
  1. an insoluble solid that emerges from a liquid solution
  2. Reactions in which one compound decomposes in two or more compounds or elements
  3. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  4. Reactions in which ions are exchanged between two reactants forming new compounds
  5. Substances which take part in a chemical reaction
  6. Iron when reacts with oxygen and moisture
  7. The reaction in which an acid reacts with a base to form salt and water by an exchange of ions
  8. Representation of chemical reaction using symbols and formulae of the substances
  9. The decomposition of a substance on heating is known as Thermal Decomposition.
  10. Reactions in which two or more reactants combine to form one product
  11. Reaction in which heat energy is absorbed
Down
  1. Reactions in which a compound decomposes because of sunlight
  2. New substance formed after a chemical reaction
  3. The chemical reactions in which a more reactive element displaces a less reactive element from a compound
  4. The reaction in which oxidation and reduction both take place simultaneously
  5. The transformation of chemical substance into another chemical substance
  6. Reaction that produces energy
  7. Reactions in which compounds decompose into simpler compounds because of passing of electricity

18 Clues: Reaction that produces energy • Iron when reacts with oxygen and moisture • Reaction in which heat energy is absorbed • New substance formed after a chemical reaction • Substances which take part in a chemical reaction • an insoluble solid that emerges from a liquid solution • Reactions in which a compound decomposes because of sunlight • ...

chapter 2 2022-03-18

chapter 2 crossword puzzle
Across
  1. a reaction that absorbs energy in the form of heat
  2. a solid that forms from a solution during a chemical reaction
  3. a material that decreases the rate of reaction
  4. anything that has mas and occupies space
  5. a short easy way to show a chemical reaction
  6. a substance that enters into a chemical reaction
  7. a characteristic of a substance that can be observed without changing the substance into another substance
  8. a system in which matter can enter from or escape to the surroundings
  9. a substance formed as a result of chemical reaction
  10. a biological catalyst that lowers the activation energy of reactions in cells
  11. a change that alters the form or appearance of a material but does not make the material into another substance
  12. the study of matter and how matter changes
Down
  1. a rapid reaction between oxygen and fuel that results in fire
  2. a reaction that releases energy in the form of heat
  3. the minimum amount of energy needed to get a chemical reaction started
  4. a characteristic of a substance that describes the ability to change into different substances
  5. the principal stating that matter is not created or destroyed during a chemical reaction
  6. a reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  7. the amount of one material in a certain volume of another material
  8. a material that increases the rate of reaction by lowering the activation energy
  9. a system in which no matter is allowed to enter or leave
  10. a material that releases energy when it burns
  11. a number infront of a chemical formula in an equation

23 Clues: anything that has mas and occupies space • the study of matter and how matter changes • a short easy way to show a chemical reaction • a material that releases energy when it burns • a material that decreases the rate of reaction • a substance that enters into a chemical reaction • a reaction that absorbs energy in the form of heat • ...

Test 7 2023-06-02

Test 7 crossword puzzle
Across
  1. substance present at the start of a chemical reaction
  2. combination, decomposition, single replacement, double replacement, combustion
  3. a solid that forms and settles out from a chemical reaction in an aqueous solution
  4. H O N F Cl Br I
  5. + or - number assigned to an atom to indicate its degree of oxidation or reduction
  6. process that involves the loss of electrons and an increase in the oxidation number
  7. a substance resulting from a chemical reaction
  8. substance that slows down or prevents a chemical reaction
  9. → ↔ ↑ ↓ Δ (s) (l) (g) (cr) (aq)
Down
  1. process in which bonds in reactants break and form new bonds in the products
  2. increasing surface area usually increases rate
  3. a substance that speeds up a reaction without being used up in the reaction
  4. chemical reaction showing only the particles directly involved in chemical change
  5. increasing T usually increases rate
  6. equation showing either oxidation or reduction from a redox reaction
  7. process that involves the gain of electrons and a decrease in the oxidation number
  8. increasing concentration usually increases rate
  9. speed at which a reaction takes place
  10. a list of elements in order of decreasing reactivity

19 Clues: H O N F Cl Br I • → ↔ ↑ ↓ Δ (s) (l) (g) (cr) (aq) • increasing T usually increases rate • speed at which a reaction takes place • increasing surface area usually increases rate • a substance resulting from a chemical reaction • increasing concentration usually increases rate • a list of elements in order of decreasing reactivity • ...

Chemistry Vocabulary 2018-11-27

Chemistry Vocabulary crossword puzzle
Across
  1. a chemical equation that does not indicate the relative amounts of reactants and products
  2. a chemical change in which an element or a compound reacts with oxygen, often producing energy in form of heart and light
  3. a substance produced in a chemical reaction
  4. a reaction in which the conversion of reactants into products and the conversion of products into reactants occur simultaneously
  5. a chemical change in which one element replaces a second element in a compound
  6. a type of solution where water acts as a solvent
  7. the symbolic representations of chemical reaction in the form of symbols and formula
  8. a chemical change in which a single compound is broken down into two or more simpler products
  9. a substance that speeds up a chemical reaction but is not consumed by the reaction; remains unchanged
Down
  1. a chemical change that involves an exchange of positive ions between two compounds
  2. an ion that is not directly involved in a chemical reaction; an ion that does not change oxidation number or composition during a reaction
  3. when the number of atoms involved in the reactant side is equal to the number of atoms on the product side
  4. a small whole number that appears in front of a formula in a balanced chemical equation
  5. a chemical change in which two or more substances react to form a single new substance
  6. the amount of product obtained in a chemical reaction
  7. an equation for a reaction in solution showing only those articles that are directly involved in the chemical change
  8. a substance present at the start of a reaction

17 Clues: a substance produced in a chemical reaction • a substance present at the start of a reaction • a type of solution where water acts as a solvent • the amount of product obtained in a chemical reaction • a chemical change in which one element replaces a second element in a compound • a chemical change that involves an exchange of positive ions between two compounds • ...

Jayda Dzawo 2020-01-17

Jayda Dzawo crossword puzzle
Across
  1. of the component particles.
  2. a solution that can resist pH change upon the addition of an acidic
  3. Energy the minimum quantity of energy which the reacting species must possess
  4. Complex the structure that results in the maximum energy point along the reaction path.
  5. he speed at which reactants are converted into products
  6. a measure of the energy dispersal in the system.
  7. Area the area of all of the outside surfaces of a three-dimensional object.
  8. basic components.
  9. the amount of a substance per defined space.
  10. a substance obrained from another substance through chemical change
  11. a force exerted by the substance per unit area on another substance
  12. replacement Reaction a type of chemical reaction where an element reacts
  13. when two or more chemicals combine and form a more complex
  14. a chemical property referring to the ability for a given substance, the solute,
  15. order to undergo a specified reaction.
  16. a substance that takes part in and undergoes change during a reaction.
Down
  1. turn, react together to give the reactants back
  2. the loss of electrons during a reaction by a molecule, atom or ion
  3. a substance that speeds up a chemical reaction, but is not consumed by the reaction
  4. a substance that decreases the rate of, or prevents, a chemical
  5. the process of burning something
  6. the property of matter which reflects the quantity of energy of
  7. Electron an outer shell electron that is associated with an atom,
  8. a compound and takes the place of another element in that compound
  9. type of chemical reaction in which a single compound breaks
  10. Chaterliers Principle an observation about chemical equilibria of reactions
  11. dissolve in a solvent.
  12. into two or more elements or new compounds.
  13. Chemical Reaction chemical reaction where the reactants form products that,
  14. a thermodynamic property of a system
  15. that can participate in the formation of a chemical bond if the outer shell is not closed

31 Clues: basic components. • dissolve in a solvent. • of the component particles. • the process of burning something • a thermodynamic property of a system • order to undergo a specified reaction. • into two or more elements or new compounds. • the amount of a substance per defined space. • turn, react together to give the reactants back • ...

chemical reactions 2016-10-23

chemical reactions crossword puzzle
Across
  1. a term used to describe materials that store carbon in their structures
  2. a green chemical found in the chloroplasts of green plants, needed to carry out photosynthesis
  3. a chemical reaction that absorbs energy
  4. rain that has acids such as nitric acid and sulphuric acid dissolved in it
  5. a reaction that uses oxygen to release energy stored in glucose
  6. a simple sugar formed by photosynthesis and used in respiration
  7. endothermic reaction that takes place in green plants
  8. a rapid reaction with oxygen that releases energy in the form of heat and/or light
  9. a process in which chemicals move, caused by different concentrations of the chemical
Down
  1. chemicals that take part in a chemical reaction
  2. combustion that occurs when there is plenty of oxygen. it produces carbon dioxide and water vapour
  3. the breakdown of metals due to their reaction with other chemicals
  4. simple written description of what is happening in a reaction
  5. a chemical reaction in which glucose is broken down, releasing energy for use by animal or plant
  6. a chemical reaction that releases energy
  7. chemicals produced in a chemical reaction
  8. a biological catalyst that speeds up a reaction

17 Clues: a chemical reaction that absorbs energy • a chemical reaction that releases energy • chemicals produced in a chemical reaction • chemicals that take part in a chemical reaction • a biological catalyst that speeds up a reaction • endothermic reaction that takes place in green plants • simple written description of what is happening in a reaction • ...

chapter 19 chemical reactions 2024-02-02

chapter 19 chemical reactions crossword puzzle
Across
  1. a chemical reaction in which one substance breaks down, or decomposes, into two or more substances.
  2. a reaction in which the energy released is in the form of heat (thermal energy).
  3. a change in which one or more substances are converted into new substances while energy is released or absorbed. Ex: combustion, growth, corrosion
  4. an insoluble compound that comes out of solution during a double-displacement reaction.
  5. number that represents the number of units of each chemical taking part in a reaction. Ex: 4NaCl (4 is the coefficient, meaning 4 units of NaCl)
  6. the new chemicals present after a reaction. Ex: ashes + smoke
  7. the chemicals present before a reaction. Ex: firewood + O2
Down
  1. a chemical reaction in which the positive ion of one compound replaces the positive ion of the other to form two new compounds. Ex: precipitate formation (aka double-replacement)
  2. a chemical reaction in which one element replaces another element in a compound. (aka single-replacement reaction)
  3. a reaction that occurs when a substance (fuel) reacts with oxygen to release energy in the form of heat and light. Ex: fire wood burning, explosions
  4. a way to describe a chemical reaction using chemical formulas and other symbols. Ex: Na + Cl  NaCl
  5. a chemical reaction that absorbs energy primarily in the form of heat. SEE p.596
  6. representation of what elements a compound contains and the exact number of the atoms of each element in a unit of that compound. Ex: H2O
  7. a chemical reaction in which two or more substances combine to form another substance. Ex: photosynthesis; a metal combines with O2 to form rust
  8. substance that is used to slow down a chemical reaction. Ex: Food preservative; paint preventing corrosion
  9. a substance is dissolved in water
  10. means ‘written below’; written after a chemical symbol to tell how many atoms of that element are in a unit of that compound.
  11. substance that speeds up a chemical reaction without being permanently changed itself. SEE p.601 Ex: enzymes in saliva

18 Clues: a substance is dissolved in water • the chemicals present before a reaction. Ex: firewood + O2 • the new chemicals present after a reaction. Ex: ashes + smoke • a reaction in which the energy released is in the form of heat (thermal energy). • a chemical reaction that absorbs energy primarily in the form of heat. SEE p.596 • ...

Chemistry Vocabulary & Balancing Equations Crossword 2017-11-15

Chemistry Vocabulary & Balancing Equations Crossword crossword puzzle
Across
  1. C8H18+O2>CO2+H2O
  2. ionic equation, an equation for a reaction in solution showing only those particles that are directly involved in the chemical change
  3. AlBr3+K2SO4>KBr+Al2(SO4)3
  4. C3H8+O2>CO2+H2O
  5. a substance that increases the rate of reaction by lowering the activation-energy barrier; the catalyst is not used up in the reaction
  6. equation, an expression representing a chemical formula; the formulas of the reactants(on the left) are connected with an arrow by the formulas for the products(on the right)
  7. equation, a chemical equation that does not indicate the relative amounts of reactants and products
  8. reaction, a chemical change in which one element replaces a second element in a compound; also called a displacement reaction
  9. reaction, a chemical change in which two or more substances react to form a single new substance; also known as a synthesis reaction
Down
  1. reaction, a chemical change in which an element or a compound reacts with oxygen which often produces energy in the form of light and heat
  2. Pb+H3PO4>H2+Pb3(PO4)2
  3. reaction, a chemical change that involves an exchange of positive ions between two compounds
  4. NO2>O2+N2
  5. NaBr+Ca(OH)2>CaBr2 +NaOH
  6. series, a list of elements in order of decreasing activity
  7. a small whole number that appears in front of a formula in a balanced chemical equation
  8. reaction, a chemical change in which a single compound is broken down into two or more simpler products
  9. ionic equation, an equation that shows dissolved ionic compounds as dissociated free ions
  10. ion, an ion that appears on both sides of an equation and is not directly involved in the reaction
  11. equation, a chemical equation in which the mass is conserved; each side of the equation has the same number of atoms of each element

20 Clues: NO2>O2+N2 • C3H8+O2>CO2+H2O • C8H18+O2>CO2+H2O • Pb+H3PO4>H2+Pb3(PO4)2 • NaBr+Ca(OH)2>CaBr2 +NaOH • AlBr3+K2SO4>KBr+Al2(SO4)3 • series, a list of elements in order of decreasing activity • a small whole number that appears in front of a formula in a balanced chemical equation • ionic equation, an equation that shows dissolved ionic compounds as dissociated free ions • ...

Crossword Puzzle 2023-05-03

Crossword Puzzle crossword puzzle
Across
  1. Represents a chemical reaction using the names of the substances involved.
  2. Equal to mass divided by volume.
  3. Is one in which two different compounds exchange positive ions and form a new compound.
  4. A number placed in front of a formula to balance a chemical equation.
  5. A substance that increases the rate of a chemical reaction without going through chemical change.
  6. the construction of complex chemical compounds from simpler ones.
  7. A chemical reaction that releases energy to its surroundings.
  8. a detailed examination of anything complex in order to understand it.
  9. The process that releases heat.
Down
  1. to bring back or return something.
  2. Breaking a single chemical entity into two or more pieces.
  3. Is a reaction in which one element takes place of another element in the compound.
  4. The substance that is present at the end of a chemical reaction.
  5. The substance that takes part in and undergoes change during a reaction
  6. A unit of measurement chemists use.
  7. The distance from the surface to the bottom.
  8. A substance that has no fixed shape.
  9. An upward force exerted by a fluid.
  10. to take place of.
  11. The school where Mr.Terras teaches.
  12. A mechanical upward force.

21 Clues: to take place of. • A mechanical upward force. • The process that releases heat. • Equal to mass divided by volume. • to bring back or return something. • A unit of measurement chemists use. • An upward force exerted by a fluid. • The school where Mr.Terras teaches. • A substance that has no fixed shape. • The distance from the surface to the bottom. • ...

Chemical Reactions Review 2022-04-29

Chemical Reactions Review crossword puzzle
Across
  1. Energy that produces heat.
  2. What is left after a chemical reaction.
  3. A reaction that happens in an environment where the reactants can not get out.
  4. A model
  5. Gaining a material back using a chemical reaction.
  6. A change that happens on a molecular scale
  7. A limit that prevents something from happening
  8. States that no mass is gained or lost in a reaction
  9. A reaction that happens in an environment where the reactants can get out.
  10. When a solid object disappears in liquid.
Down
  1. When one or more substance makes a new substance
  2. Solids, liquids, and gasses are all _______ of matter.
  3. A reaction that produces heat.
  4. A reaction that absorbs heat.
  5. Something you are supposed to meet
  6. What is mixed in a chemical reaction that makes the reaction react.
  7. When a new solid form in a chemical reaction.
  8. When something is kept constant in a reaction.

18 Clues: A model • Energy that produces heat. • A reaction that absorbs heat. • A reaction that produces heat. • Something you are supposed to meet • What is left after a chemical reaction. • When a solid object disappears in liquid. • A change that happens on a molecular scale • When a new solid form in a chemical reaction. • When something is kept constant in a reaction. • ...

Chapter 3.4 Review 2021-10-29

Chapter 3.4 Review crossword puzzle
Across
  1. substances that participate in a chemical reaction
  2. an arrow that points from reactants to the products
  3. states that matter is neither created nor destroyed in ordinary physical and chemical changes
  4. numbers written below and to the right of a chemical symbol
  5. energy released to the surroundings, reation mixtures often feel warm
  6. what you would do to a chemical equation in order to ensure that the reactants and products contain the same number of atoms of each
  7. particles move faster when this is higher which allows for more particle collision and a higher rate of reaction
  8. substances formed in a reaction
  9. the number that is placed in front of a chemical formula
  10. an expression that uses symbols to show the relationship between the starting substances and the substances that are produced by a chemical reaction
Down
  1. a solid that can be formed during a chemical reaction, a sign that a chemical reaction has occurred
  2. requires an input of energy, energy taken in from surroundings, reactions mixtures often feel cold
  3. states that energy cannot be created or destroyed, energy can change form
  4. the process in which atoms are rearranged to produce new substances
  5. to increase this, you can crush or grind solids
  6. more reactants in a given volume
  7. describes how fast a reaction occurs
  8. uses chemical symbols and numbers to represent a given substance
  9. subsatnce that changes the rate of a chemical reaction without being used up or changed very much

19 Clues: substances formed in a reaction • more reactants in a given volume • describes how fast a reaction occurs • to increase this, you can crush or grind solids • substances that participate in a chemical reaction • an arrow that points from reactants to the products • the number that is placed in front of a chemical formula • ...

Ch 6&7 vocab 2023-11-09

Ch 6&7 vocab crossword puzzle
Across
  1. energy the energy stored in chemical bonds
  2. reaction a chemical reaction in which two or more substances react to form a single substance
  3. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  4. bond the force that holds cations and anions together
  5. bond the attraction between a metal cation and the shared electrons that surround it
  6. reaction a chemical reaction in which one element takes the place of another element in a compound
  7. an ion with a positive charge
  8. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  9. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
  10. reaction a chemical reaction in which a compound breaks down into two or more simpler substances
  11. new substances formed as a result of a chemical reaction
  12. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
Down
  1. reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. bond the force that holds atoms or ions together as a unit
  3. an atom or group of atoms that has a positive or negative charge
  4. bond a chemical bond in which two atoms share a pair of valence electrons
  5. a substance that undergoes change in a chemical reaction
  6. an ion with a negative charge
  7. a neutral group of atoms that are joined together by one or more covalent bonds
  8. equation a representation of a chemical reaction in which the reactants and products are expressed as formulas

20 Clues: an ion with a positive charge • an ion with a negative charge • energy the energy stored in chemical bonds • bond the force that holds cations and anions together • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • bond the force that holds atoms or ions together as a unit • ...

Biomolecules 2022-02-03

Biomolecules crossword puzzle
Across
  1. chemical substance that is present at the start of a chemical reaction
  2. Protein that speeds up chemical reactions
  3. Biomolecule that stores genetic info
  4. Example of a protein
  5. Monomer for a protein
  6. Monomer for a nucleic acid
  7. substance produced in a chemical reaction
  8. Example of Carbohydrate
  9. biomolecule composed of amino acids joined together by peptide bonds
  10. minimum amount of energy needed to start a chemical reaction
  11. Anyway an enzyme is changed to no longer function
Down
  1. Biomolecule that provides quick energy
  2. Method in which a enzyme could be denatured
  3. One building block in a biomolecule
  4. Example of Lipid
  5. The building blocks that make up all life
  6. Example of Nucleic acid
  7. substance on which an enzyme acts during a chemical reaction.
  8. part of the enzyme where the substrate will bind and the reaction will take place.
  9. Biomolecule that provides long term energy

20 Clues: Example of Lipid • Example of a protein • Monomer for a protein • Example of Nucleic acid • Example of Carbohydrate • Monomer for a nucleic acid • One building block in a biomolecule • Biomolecule that stores genetic info • Biomolecule that provides quick energy • The building blocks that make up all life • Protein that speeds up chemical reactions • ...

chemistry 2023-04-25

chemistry crossword puzzle
Across
  1. (Hint: Gain of electrons during a chemical reaction)
  2. (Hint: Process of forming ions from atoms or molecules)
  3. (Hint: Having a pH value less than 7)
  4. (Hint: Study of interaction between matter and electromagnetic radiation)
  5. (Hint: Process of measuring the concentration of a substance in a solution)
  6. (Hint: Calculation of quantities in chemical reactions)
  7. (Hint: Substance formed as a result of a chemical reaction)
  8. (Hint: Substance that conducts electricity when dissolved in water)
  9. (Hint: Large molecule made up of repeating units)
  10. (Hint: Measure of how much solute can dissolve in a given solvent)
  11. (Hint: Substance that undergoes a chemical change in a reaction)
  12. (Hint: Type of chemical bond involving the sharing of electrons)
Down
  1. (Hint: Substance that speeds up a chemical reaction without being consumed)
  2. (Hint: State of balance in a chemical reaction)
  3. (Hint: Variant of an element with different numbers of neutrons)
  4. (Hint: Loss of electrons during a chemical reaction)
  5. (Hint: Having a pH value greater than 7)
  6. (Hint: Process of changing from a gas to a liquid)
  7. (Hint: Process of changing from a solid directly to a gas without going through a liquid phase)
  8. (Hint: Based on observation or experience rather than theory)

20 Clues: (Hint: Having a pH value less than 7) • (Hint: Having a pH value greater than 7) • (Hint: State of balance in a chemical reaction) • (Hint: Large molecule made up of repeating units) • (Hint: Process of changing from a gas to a liquid) • (Hint: Gain of electrons during a chemical reaction) • (Hint: Loss of electrons during a chemical reaction) • ...

States of Matter 2022-01-05

States of Matter crossword puzzle
Across
  1. the type of change that changes matter identity
  2. mixed with baking soda to create a gas
  3. can change matter between phases
  4. anything that has mass and volume
  5. when a solid becomes a liquid
  6. chemical reaction that occurs on old food
  7. type of change that occurs when a pencil breaks
  8. occurs when a gas becomes a liquid
  9. chemical reaction that occurs in an oven
  10. state of matter with definite volume, not shape
  11. chemical reaction when iron gets wet
Down
  1. chemical reaction when food mixes with acid
  2. the property of matter that describes how it smells
  3. the property of matter that describes light
  4. occurs when a liquid becomes a gas
  5. state of matter that contains quickest particles
  6. when a liquid becomes a solid
  7. chemical reaction when silver gets old
  8. how much space matter takes up
  9. state of matter with definite shape and volume

20 Clues: when a solid becomes a liquid • when a liquid becomes a solid • how much space matter takes up • can change matter between phases • anything that has mass and volume • occurs when a liquid becomes a gas • occurs when a gas becomes a liquid • chemical reaction when iron gets wet • mixed with baking soda to create a gas • chemical reaction when silver gets old • ...

Reactions Crossword 2025-03-25

Reactions Crossword crossword puzzle
Across
  1. A substance made of two or more atoms chemically joined together.
  2. When observing a chemical reaction, you might feel the chemicals change in temperature.
  3. A change in which atoms are rearranged to create a new substance.
  4. When a chemical reaction occurs, energy is transferred to or from the surroundings.
  5. A chemical reaction in which a compound breaks down into simpler parts.
  6. A possible source of danger.
  7. A change which transfers energy from the surroundings.
  8. The starting substances in a chemical reaction.
Down
  1. Changes of state and dissolving are physical changes.
  2. Something used to speed up a chemical reaction.
  3. A change which transfers energy to the surroundings.
  4. A chemical reaction with oxygen that gives out light and heat.
  5. Type of reaction in which you cannot get back the substances you started with.
  6. Protective equipment worn in a lab.
  7. The resulting substances in a chemical reaction.
  8. A chemical formula shows how many atoms of each elements are in a compound.

16 Clues: A possible source of danger. • Protective equipment worn in a lab. • Something used to speed up a chemical reaction. • The starting substances in a chemical reaction. • The resulting substances in a chemical reaction. • A change which transfers energy to the surroundings. • Changes of state and dissolving are physical changes. • ...

Reactions Crossword 2025-03-25

Reactions Crossword crossword puzzle
Across
  1. A substance made of two or more atoms chemically joined together.
  2. A change which transfers energy to the surroundings.
  3. When observing a chemical reaction, you might feel the chemicals change in temperature.
  4. A chemical formula shows how many atoms of each elements are in a compound.
  5. A change which transfers energy from the surroundings.
  6. The starting substances in a chemical reaction.
  7. Something used to speed up a chemical reaction.
  8. Protective equipment worn in a lab.
  9. Type of reaction in which you cannot get back the substances you started with.
Down
  1. A chemical reaction in which a compound breaks down into simpler parts.
  2. A chemical reaction with oxygen that gives out light and heat.
  3. The resulting substances in a chemical reaction.
  4. A possible source of danger.
  5. When a chemical reaction occurs, energy is transferred to or from the surroundings.
  6. A change in which atoms are rearranged to create a new substance.
  7. Changes of state and dissolving are physical changes.

16 Clues: A possible source of danger. • Protective equipment worn in a lab. • The starting substances in a chemical reaction. • Something used to speed up a chemical reaction. • The resulting substances in a chemical reaction. • A change which transfers energy to the surroundings. • Changes of state and dissolving are physical changes. • ...

Physical Science 2022-05-26

Physical Science crossword puzzle
Across
  1. in a solution, the dissolving material or the material in greater abundance
  2. the actual amount of solute dissolved in a given amount of solution
  3. a ____ reaction is a chemical reaction that releases more thermal energy than it absorbs, gives off heat.
  4. an ionic compound formed by a combination of cations and anions
  5. a _____ reaction is a chemical reaction in which a single reactant breaks down into two or more products
  6. a substance that is formed during a chemical reaction
  7. a heterogenous mixture of a fluid and large particles that will settle out over time
  8. a double-replacement reaction between an acid and a base that produces a salt and a water.
  9. a solution that contains more than the maximum amount of a solute that it can normally hold at a given temperature
  10. a solution that contains less than the maximum amount of solute that it could hold at a given temperature
  11. a ____ solution is a water-based solution
  12. the physical separation of the ions in a solid ionic compound by the action of a solvent
Down
  1. a substance that helps a reaction happen faster but is not used up in the reaction
  2. a substance that slows the rate of a reaction by reducing the effectiveness of catalysts.
  3. a mixture with a uniform appearance throughout
  4. an exothermic chemical reaction in which a fuel reacts with oxygen
  5. in a solution, the dissolved material or the material in lesser abundance
  6. a loss of electrons in a chemical reaction
  7. a weak acid or base in solution that resists changes in pH when a moderate amount of either an acid or base is added.
  8. a unitless number between 0 and 14 that tells how acidic or basic a substance is
  9. H3O+
  10. a substance that enters into a chemical reaction
  11. a solution that contains the maximum amount of solute that it can hold at a given temperature.
  12. a heterogenous mixture in which the dispersed particles will not settle out.
  13. OH-
  14. a substance that produces hydroxide ions in an aqueous solution
  15. a ____ reaction is a chemical reaction in which two or more reactants combine into a single, more complex product.
  16. a ____ reaction is a chemical reaction that absorbs more thermal energy than it releases, makes things cold.
  17. a chemical ______ is the process that rearranges the atoms in one or more substances into one or more new substances
  18. a substance that produces hydrogen ions in an aqueous solution
  19. a _____-replacement reaction is a chemical reaction in which two compounds swap cations or anions with each other.

31 Clues: OH- • H3O+ • a ____ solution is a water-based solution • a loss of electrons in a chemical reaction • a mixture with a uniform appearance throughout • a substance that enters into a chemical reaction • a substance that is formed during a chemical reaction • a substance that produces hydrogen ions in an aqueous solution • ...

Chemistry 2025-04-29

Chemistry crossword puzzle
Across
  1. Matter changes
  2. Chemical, releases heat
  3. Substance is transformed
  4. Space occupied by an object
  5. Combined, new
  6. More than one atom
  7. Hot & Cold
  8. Atoms forced together
  9. Observed, measured
  10. Formed after chemical reaction
  11. Stuff, takes up space
  12. Elements don't chemically combine
Down
  1. Capacity of doing work
  2. Properties & Change in matter
  3. Combined molecules
  4. Speeds up chemical reaction
  5. Can't be broken down
  6. Energy transferred
  7. Can change from reaction
  8. Attractive force between substance
  9. Chemical, absorbs heat
  10. Smallest unit of matter
  11. Matter of an object
  12. Materials that undergo change

24 Clues: Hot & Cold • Combined, new • Matter changes • Combined molecules • Energy transferred • More than one atom • Observed, measured • Matter of an object • Can't be broken down • Atoms forced together • Stuff, takes up space • Capacity of doing work • Chemical, absorbs heat • Chemical, releases heat • Smallest unit of matter • Substance is transformed • Can change from reaction • ...

Types of reactions 2025-04-27

Types of reactions crossword puzzle
Across
  1. : Adjusting coefficients to conserve mass in a chemical equation
  2. : Reaction where a single compound breaks into simpler substances
  3. : Reaction where two or more substances combine to form a product
  4. : Reaction involving both oxidation and reduction
  5. : Process where a substance gains oxygen
  6. : Charged particles formed by gain or loss of electrons
  7. : Reaction that forms an insoluble solid from two solutions
  8. : Slow destruction of metals by chemical reaction with environment
  9. : Substance that speeds up a chemical reaction without being consumed
Down
  1. : Reaction that absorbs heat energy
  2. : Solid formed in a solution during a chemical reaction
  3. : Reaction where one element replaces another in a compound
  4. : Reaction where two compounds exchange ions to form two new compounds
  5. : A representation of a chemical reaction using symbols
  6. : Reaction that releases heat energy
  7. : Solution where water is the solvent

16 Clues: : Reaction that absorbs heat energy • : Reaction that releases heat energy • : Solution where water is the solvent • : Process where a substance gains oxygen • : Reaction involving both oxidation and reduction • : Solid formed in a solution during a chemical reaction • : A representation of a chemical reaction using symbols • ...

Chemistry Review (Pt. 2) 2013-05-28

Chemistry Review (Pt. 2) crossword puzzle
Across
  1. A ________ is a substance that initiates or accelerates a chemical reaction without itself being affected
  2. “_____" describes bonds that have an uneven distribution of charge
  3. The ________ reactant is a reactant that is totally consumed during a chemical reaction, limits the extent of the reaction, and determines the amount of product
  4. ___ ionic equations include only those compounds and ions that undergo a chemical change in a reaction in an aqueous solution
  5. A chemical compound whose simplest units are molecules is a _________ compound
  6. _____________ is the study of quantitative relationships between the amounts of reactants used and products formed by chemical reaction; is based on the law of conservation of mass
  7. ____________ are whole numbers that appear in front of a formula in a chemical equation
  8. A neutral group of atoms that are held together by covalent bonds is called a ________
  9. ________ bonding is the result from the sharing of electron pairs between two atoms
  10. ________ molecules only contain two atoms
  11. A ______-replacement reaction is a chemical change in which one element replaces a second element in a compound
  12. _____ mass is the mass in grams of 1 mol of a substance
  13. _________ number is the number of particles in 1 mole of a pure substance
  14. A ________ bond is a mutual electrical attraction between the nuclei and valance electrons of different atoms that binds the atoms together
Down
  1. The list of elements organized according to the ease with which the elements undergo certain chemical reactions is called the ________ series
  2. A ________ equation is a chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element
  3. A chemical change in which two or more substances react to form a single new substance is considered a ___________ reaction
  4. A single bond is a covalent bond produced by the _______ of one pair of electrons between two atoms
  5. Chemical bonding that results from electrical attraction between large number of cations and anions is called _____ bonding
  6. ___________ yield is the amount of product that could form during a reaction calculated from a balanced chemical equation; it represents the maximum amount of product that could be formed from a given amount of reactant
  7. A _____________ reaction is the separation of a substance into two or more substances that may differ from each other and from the original substance
  8. A combustion reaction is the _________ reaction of an organic compound, in which heat is released
  9. The law of ____________ of mass states that mass is neither created nor destroyed during ordinary chemical reactions or physical changes.
  10. A ________ equation is a chemical equation that does not indicate the relative amounts of the reactants and products
  11. ________ ionic equation is an equation that shows dissolved ionic compounds as dissociated free ions
  12. A ______-replacement reaction is a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound
  13. The mole ratio is the ratio between the numbers of moles of any two of the __________ in a balanced chemical equation
  14. The chemical _______ indicates the relative numbers of atoms of each kind in a chemical compound by using atomic symbols and numerical subscripts
  15. The molecular formula shows the types and numbers of _____ combined in a single molecule of a molecular compound
  16. ______ yield is the amount of product actually produced when the chemical reaction is carried out in an experiment

30 Clues: ________ molecules only contain two atoms • _____ mass is the mass in grams of 1 mol of a substance • “_____" describes bonds that have an uneven distribution of charge • _________ number is the number of particles in 1 mole of a pure substance • A chemical compound whose simplest units are molecules is a _________ compound • ...

Metabolic processes 2016-11-24

Metabolic processes crossword puzzle
Across
  1. the reduced form of the coenzyme nicotinamide adenine dinucleotide.
  2. standard quantity equal to approximately 6.022 x 10^23.
  3. reaction: a chemical reaction in which energy is released , leaving the products with less chemical potential energy than the reactants.
  4. state: a temporary condition during a chemical in which the bonds in the reactants are breaking and the bonds in the products forming.
  5. energy : the energy of motion
  6. Law of Thermodynamics: in every energy transfer or conversion, some of the useful energy in the system becomes unusable and increases the entropy of the universe.
  7. transfer of a phosphate group, usually from ATP to another molecule.
  8. pathway:a pathway where energy is released and complex molecules are broken down into simple molecules.
  9. change : a change that will once begun continue on its own under a given set of conditions, does not require a continuous supply of energy.
  10. reaction : a chemical reaction in which energy is absorbed giving the products more chemical potential energy than the reactants.
  11. coupling :the transer of energy from one reaction to another in order to drive the second reaction.
Down
  1. energy: the minimum amount of energy that is required to break a particular type of bond, measured in KJ per Mol of bonds.
  2. pathway: a pathway in which energy is supplied to build complex molecules from simple molecules.
  3. Law of Thermodynamics :principle that states that energy can be transferred or transformed but it cannot be created or destroyed.
  4. energy :Gibbs free energy.
  5. sum of all chemical reactions in a cell or organism.
  6. reaction: a chemical reaction that absorbs free energy.
  7. an enzyme that oxidizes a substrate and transfers hydrogen ions to an acceptor.
  8. cycle: the cyclic and ongoing breakdown and re-synthesis of ATP.
  9. energy:the minimum amount of energy that chemical reactants must absorb to start a reaction.
  10. : a measurement of disorder in a system.
  11. energy : stored energy
  12. reaction : a chemical reaction that releases free energy.

23 Clues: energy : stored energy • energy :Gibbs free energy. • energy : the energy of motion • : a measurement of disorder in a system. • sum of all chemical reactions in a cell or organism. • reaction: a chemical reaction that absorbs free energy. • standard quantity equal to approximately 6.022 x 10^23. • reaction : a chemical reaction that releases free energy. • ...

Types of reactions 2020-05-12

Types of reactions crossword puzzle
Across
  1. Substances that react together to form products.
  2. A type of decomposition reaction using heat.
  3. A change where no new substances are formed.
  4. Reaction where a fuel reacts with Oxygen producing thermal energy.
  5. A type of combustion where there is insufficient Oxygen.
  6. A gas produced during incomplete combustion.
  7. Black particulates produced during incomplete combustion.
  8. Substances formed in a chemical reaction.
  9. A gas produced during complete combustion.
Down
  1. This is the minimum amount of energy needed to start a reaction.
  2. In theory this is always conserved in a chemical reaction.
  3. Reaction giving out thermal energy to the surroundings.
  4. A substance used to release thermal energy when reacted with Oxygen.
  5. A change where new substances are formed.
  6. A chemical used to speed up chemical reactions.
  7. Reaction taking in thermal energy from the surroundings.
  8. A gas needed for a combustion reaction.
  9. A type of energy resource that is not running out.

18 Clues: A gas needed for a combustion reaction. • A change where new substances are formed. • Substances formed in a chemical reaction. • A gas produced during complete combustion. • A type of decomposition reaction using heat. • A change where no new substances are formed. • A gas produced during incomplete combustion. • A chemical used to speed up chemical reactions. • ...

Chemistry U3 P1: Reactions 2021-10-21

Chemistry U3 P1: Reactions crossword puzzle
Across
  1. A molecule consisting of two atoms
  2. A starting material in a chemical reaction
  3. a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
  4. both sides of the equation have the same number of atoms of each element
  5. A solid that forms from a solution during a chemical reaction.
  6. use the types of replacements given the reactants. Then predict the products.
  7. the annual rate of return on a bond if the bond were held to maturity
  8. a reaction in which two or more substances combine to form a new compound
  9. a solid that readily dissolves in water
  10. a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
  11. a reaction in which a single compound breaks down to form two or more simpler substances
  12. a chemical change that involves an exchange of positive ions between two compounds
Down
  1. Matter is not created nor destroyed in any chemical or physical change
  2. A reaction that releases energy in the form of heat
  3. A reaction that ABSORBS energy in the form of heat
  4. a solid that dissolves to such a small degree that it is not detectable to the naked eye
  5. a chemical change in which one element replaces a second element in a compound
  6. a list of elements organized according to the ease with which the elements undergo certain chemical reactions
  7. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  8. the process by which one or more substances change to produce one or more different substances
  9. The elements or compounds produced by a chemical reaction.
  10. solid, liquid, gas

22 Clues: solid, liquid, gas • A molecule consisting of two atoms • a solid that readily dissolves in water • A starting material in a chemical reaction • A reaction that ABSORBS energy in the form of heat • A reaction that releases energy in the form of heat • The elements or compounds produced by a chemical reaction. • ...

Chemical Reactions Crossword 2023-03-09

Chemical Reactions Crossword crossword puzzle
Across
  1. a reaction in which electrons are transferred from one reactant to another
  2. a representation of a chemical reaction in which reactants and products are expressed as formulas
  3. a reaction in which a compound breaks down into two or more simpler substances (AB --> A + B)
  4. + CD --> AD + BC)
  5. a reaction in which the conversion of reactants into products and the conversion of products into reactants can happen simultaneously
  6. the substances that undergo change in a chemical reaction (the starting materials of a reaction)
  7. the rate at which reactants change into reactants change into rpoducts
  8. a chemical reaction that releases energy into its surroundings
Down
  1. a reaction in which a substance reacts rapidly with oxygen, often producing heat and light
  2. a reaction in which two different compounds exchange positive ions and form 2 new compounds
  3. a reaction in which one element take the place of an other element in a compound (A + BC --> AC + B)
  4. the numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant to the product
  5. a state in which the forward and reverse paths of change take place at the same rate
  6. the energy stored in the chemical bonds of a substance
  7. a chemical reaction that absorbs energy from its surroundings
  8. the new substances that are formed as a result of a chemical reaction
  9. a reaction in which 2 more more substances react to form a single substance (A + B --> AB)
  10. a substance that affects the reaction rate without being used in the reaction

18 Clues: + CD --> AD + BC) • the energy stored in the chemical bonds of a substance • a chemical reaction that absorbs energy from its surroundings • a chemical reaction that releases energy into its surroundings • the new substances that are formed as a result of a chemical reaction • the rate at which reactants change into reactants change into rpoducts • ...

Chemistry Revision 2024-06-17

Chemistry Revision crossword puzzle
Across
  1. a type of reaction which involves a metal bonding with oxygen
  2. the chemicals that go into a chemical reaction
  3. a type of reaction which involves a fuel and oxygen (redox)
  4. a type of reaction which brings oxygen into the cells in our body
  5. a solid crystalline product of acid base chemical reactions
  6. a chemical reaction that produces energy (heat)
  7. negatively charged particles which orbit around the nucleus of atoms
  8. A negatively charged atom (ion)
  9. particles that make up atoms that have no charge
Down
  1. positively charged particle that make up atoms
  2. the chemicals that are produced by a chemical reaction
  3. a substance which needs more protons (receiver)
  4. a chemical reaction that requires energy
  5. a substance which has spare protons (donor)
  6. the law that states matter and energy cannot be created or destroyed in a chemical reaction
  7. A positively charged atom (ion)
  8. atoms that have an abnormal number of neutrons

17 Clues: A positively charged atom (ion) • A negatively charged atom (ion) • a chemical reaction that requires energy • a substance which has spare protons (donor) • positively charged particle that make up atoms • the chemicals that go into a chemical reaction • atoms that have an abnormal number of neutrons • a substance which needs more protons (receiver) • ...

Chapter 5 vocabulary 2020-02-06

Chapter 5 vocabulary crossword puzzle
Across
  1. system, A system in which no matter is allowed to enter or leave
  2. A solid in which the atoms arranged in a pattern that repeats again and again
  3. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  4. A chemical reaction in which two or more simple substances combine to form a new more complex substances
  5. A chemical reaction that breaks down compounds into simpler products
  6. A solid that forms a solution during a chemical reaction
  7. conservation mass, the principle that the total amount of matter is neither created nor destroyed during any chemical or physical change
  8. reaction, A reaction that releases energy usually in the form of heat
  9. equation, A short easy way shows a chemical reaction using symbols.
Down
  1. change, A change in which one or more substances combine or break apart to new substance.
  2. change, A change that alters the form or appearance of material but does not make the material into another substance
  3. A Substance that enters into a chemical reaction
  4. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
  5. reaction, A reaction that absorbs energy
  6. The amount of one material in a certain volume of another material
  7. A substance formed as a result of a chemical reaction
  8. energy, The minimum amount of energy needed to start a chemical reaction
  9. system, A system in which can enter from or escape to the surroundings

18 Clues: reaction, A reaction that absorbs energy • A Substance that enters into a chemical reaction • A substance formed as a result of a chemical reaction • A solid that forms a solution during a chemical reaction • system, A system in which no matter is allowed to enter or leave • The amount of one material in a certain volume of another material • ...

Exothermic and Endothermic reactions 2020-12-18

Exothermic and Endothermic reactions crossword puzzle
Across
  1. A forming of water vapor in clouds.
  2. Energy is stored in the bonds of chemical compounds.
  3. The type of reaction in exothermic reaction.
  4. Reaction between magnesium and chlorine gas.
  5. During reaction of potassium chloride,what solvent in the reaction?
  6. What reaction when heat evolved?
  7. Potassium,water and hydrogen mixed together, what is the reaction?
  8. How much energy stores in the products?
  9. Chemical formula Na2SO3.
  10. A substance combines with oxygen.
  11. Air like substances that can move around freely and flow.
  12. Another term used for burning.
Down
  1. What temperature becomes when energy is taken from the environment?
  2. Energy that is released to the environment.
  3. How energy do the surroundings?
  4. When the surroundings vibrate more and more, what energy is given?
  5. Related to exothermic reaction, reaction between fuel and oxidant.
  6. A reaction between copper wire and sulfur.
  7. During reaction of sodium chloride, what solute in the reaction?
  8. Reaction between sodium carbonate and chloride.
  9. Another process in endothermic reaction?
  10. Including in exothermic reaction.
  11. What is the chemical reaction in which energy is taken in?
  12. Reaction when temperature increases.
  13. Symbolic representation of a chemical reaction in the form of symbols and formulae.
  14. A reaction includes base and acid react to form water and salt.
  15. Energy including in Endothermic reaction.
  16. Reaction between carbon and oxygen.
  17. Matter that has properties and composition.
  18. Weak organic acid that has molecular formula.

30 Clues: Chemical formula Na2SO3. • Another term used for burning. • How energy do the surroundings? • What reaction when heat evolved? • Including in exothermic reaction. • A substance combines with oxygen. • A forming of water vapor in clouds. • Reaction between carbon and oxygen. • Reaction when temperature increases. • How much energy stores in the products? • ...

Exothermic and Endothermic reactions 2021-08-29

Exothermic and Endothermic reactions crossword puzzle
Across
  1. Reaction between carbon and oxygen.
  2. Reaction between sodium carbonate and chloride.
  3. Matter that has properties and composition.
  4. During reaction of sodium chloride, what solute in the reaction?
  5. A reaction includes base and acid react to form water and salt.
  6. Energy is stored in the bonds of chemical compounds.
  7. Including in exothermic reaction.
  8. Energy that is released to the environment.
  9. When iron rusts, it combines with oxygen from the air.
  10. Related to exothermic reaction, reaction between fuel and oxidant.
  11. During reaction of potassium chloride,what solvent in the reaction?
  12. What is the chemical reaction in which energy is taken in?
  13. Symbolic representation of a chemical reaction in the form of symbols and formulae.
  14. Another term used for burning.
  15. How energy do the surroundings?
  16. The type of reaction in exothermic reaction.
  17. A reaction between copper wire and sulfur.
  18. Reaction between magnesium and chlorine gas.
  19. Weak organic acid that has molecular formula.
  20. How much energy stores in the products?
Down
  1. A substance combines with oxygen.
  2. When the surroundings vibrate more and more, what energy is given?
  3. What reaction when heat evolved?
  4. Another process in endothermic reaction?
  5. Energy including in Endothermic reaction.
  6. What temperature becomes when energy is taken from the environment?
  7. Reaction when temperature increases.
  8. Potassium,water and hydrogen mixed together, what is the reaction?
  9. A forming of water vapor in clouds.
  10. Air like substances that can move around freely and flow.
  11. Chemical formula Na2SO3.

31 Clues: Chemical formula Na2SO3. • Another term used for burning. • How energy do the surroundings? • What reaction when heat evolved? • A substance combines with oxygen. • Including in exothermic reaction. • Reaction between carbon and oxygen. • A forming of water vapor in clouds. • Reaction when temperature increases. • How much energy stores in the products? • ...

Unit 7.4 to 7.6 2021-03-17

Unit 7.4 to 7.6 crossword puzzle
Across
  1. A chemical _____ has symbols and numbers that tell the scientist which atoms are present and exactly how many in a substance.
  2. The substances present before a reaction takes place.
  3. The chemical combination of a metal and a nonmetal
  4. the reaction between an acid and a base, the chemical combination is acid + base --> salt + water
  5. A chemical _____ is the representation of a chemical reaction in words or symbols, this shows the scientist what happens over time during a chemical change.
  6. A substance that increases the hydroxide ions in a solution
  7. A chemical reaction that releases energy by light or heat
  8. A composition of two or more substances that are not chemically combined
  9. A mixture of 2 or more substances that are the same throughout
Down
  1. The name for the substance that is dissolved in a solution
  2. The substances formed as a result of a chemical reaction.
  3. the law of _____ of mass states: matter can neither be created nor destroyed in a chemical reaction.
  4. A substance that increases the number of hydronium ions in a solution
  5. What is known as the universal solvent?
  6. The amount of substance (solute) dissolved in a given volume of solution (solvent)
  7. A chemical reaction that absorbs energy, usually in the form of heat
  8. The substance that dissolves the solute
  9. A chemical _____ is the process by which atoms are rearranged chemically to form new substances, chemical bonds can be broken, formed, or both.

18 Clues: What is known as the universal solvent? • The substance that dissolves the solute • The chemical combination of a metal and a nonmetal • The substances present before a reaction takes place. • The substances formed as a result of a chemical reaction. • A chemical reaction that releases energy by light or heat • ...

Science Vocabulary 2017-09-04

Science Vocabulary crossword puzzle
Across
  1. Synthesis chemical reaction in which water is formed when two molecules are
  2. Energy energy input necessary to initiate a chemical reaction.
  3. sometimes sulfur.
  4. monomer that forms DNA and has a phosphate group, a sugar and a nitrogen-
  5. large organic molecule; also referred as biomolecule-molecule produced or used my living organisms.
  6. Acid molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen
  7. polymer composed of amino acids linked by peptide bonds; folds into a particular
  8. large carbon-based molecule formed by monomers.
  9. nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils.
  10. depending on bonds between amino acids.
Down
  1. reactant in a chemical reaction upon which an enzyme acts.
  2. substance formed by a chemical reaction.
  3. and forming of chemical bonds.
  4. carbohydrate monomer made of only one sugar molecule.
  5. base.
  6. Bond Attraction between atoms that creates chemical substances containing two or
  7. into two products.
  8. Acid polymer of nucleotides, the genetic material of organisms.
  9. molecular subunit of a polymer
  10. protein that catalyzes chemical reactions for organisms.
  11. chemical reaction in which a water molecule is broken and one molecule is broken
  12. substance that is changed by a chemical reaction.
  13. substance in which solutes dissolve and that is present in greatest concentration in a solution.
  14. molecule composed of carbon, hydrogen and oxygen; includes sugars and
  15. atoms.
  16. substance that decreases activation energy and increases reaction rate in a chemical
  17. substance that dissolves in a solvent and is present at a lower concentration than the solvent.

27 Clues: base. • atoms. • sometimes sulfur. • into two products. • and forming of chemical bonds. • molecular subunit of a polymer • depending on bonds between amino acids. • substance formed by a chemical reaction. • large carbon-based molecule formed by monomers. • substance that is changed by a chemical reaction. • carbohydrate monomer made of only one sugar molecule. • ...

Chemical Reactions 2022-03-15

Chemical Reactions crossword puzzle
Across
  1. a reaction that releases energy, causing the new substance to get warmer
  2. when you eat lunch and your food is digesting, this is a _____________ change
  3. to change the order or position of something
  4. a chemical reaction can happen with only a ___________ reactant, or many.
  5. During a chemical reaction, ________ do not change from one type to another
  6. a starting substance that is part of a chemical reaction
  7. an ending substance that is made during a chemical reaction
  8. during a chemical reaction, atoms cannot be created or ____________
  9. the temperature at which a substance changes from the liquid phase to the gase phase
  10. something that is mde of all the same atoms or groups of atoms
  11. a reaction that takes in energy, causing the new substance to get cooler
Down
  1. different substances have different ______________
  2. one or more starting substances (reactants) change into one or more different substances (_________)
  3. a group of atoms joined together in a partiular way
  4. things that are too small or too large to see can be studied with these
  5. When _________ burn they release energy
  6. something that can be observed about a substance, such as color, smell, or boiling point
  7. a process in which atoms rearrange to form new substances
  8. during a chemical reaction, all of the atoms that make up the ________________ rearrange to form the products.
  9. groups of atoms _________ to make up a substance
  10. tiny pieces that all matter is made of
  11. when you sharpen a pencil, it is a _________ change
  12. the temperature at which a substance changes from a solid phas to the liquid phase
  13. Burning is a type of ___________ reaction.
  14. during a chemical reaction, atoms ____________ be created or destroyed
  15. atoms _________________ to form different groups of atoms(molecules) during a chemical reaction

26 Clues: tiny pieces that all matter is made of • When _________ burn they release energy • Burning is a type of ___________ reaction. • to change the order or position of something • groups of atoms _________ to make up a substance • different substances have different ______________ • a group of atoms joined together in a partiular way • ...

Chapter 8 Vocab 2022-05-05

Chapter 8 Vocab crossword puzzle
Across
  1. the ratio between the amounts in moles of any two compounds involved in a chemical reaction
  2. a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
  3. process by which electric current is passed through a substance to effect a chemical change.
  4. relating to or affecting the fundamental nature of something; far-reaching or thorough.
  5. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  6. process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  7. the symbolic representation of a chemical reaction in the form of symbols and formulae
  8. a substance that takes part in and undergoes change during a reaction.
  9. high temperature exo thermic reaction
  10. any chemical reaction that absorbs heat from the environment
Down
  1. a reaction in which a compound breaks down into two or more simpler substances.
  2. chemical reaction in which one element is replaced by another in a compound.
  3. a type of chemical reaction that involves a transfer of electrons between two species.
  4. a thing or person that is the result of an action or process.
  5. reactions that release heat
  6. a biological catalyst and is almost always a protein
  7. reactions that occur when two different atoms or molecules interact to form a different molecule or compound.
  8. an underlying substance or layer.

18 Clues: reactions that release heat • an underlying substance or layer. • high temperature exo thermic reaction • a biological catalyst and is almost always a protein • any chemical reaction that absorbs heat from the environment • a thing or person that is the result of an action or process. • a substance that takes part in and undergoes change during a reaction. • ...

Ch. 6 Vocabulary Review 2023-01-17

Ch. 6 Vocabulary Review crossword puzzle
Across
  1. a disease where there is too much sugar in the blood
  2. the type of energy that deals with motion
  3. an enzyme that digests fats
  4. the area on an enzyme where a substrate fits
  5. a chemical that helps a chemical reaction without being consumed during the reaction
  6. a molecule formed when phosphate is removed from ATP
  7. the process of adding phosphorus to a molecule
  8. the amount of energy in food
  9. the sugar that is broken down for energy in cells
  10. the chemicals produced or left over after a chemical reaction
  11. the reactant an enzyme bonds with
Down
  1. an enzyme that digests proteins
  2. the energy needed to start a chemical reaction
  3. the process of adding water to break apart chemical bonds
  4. all the chemical reactions that take place in a cell
  5. a catalyst produced only in living things
  6. the chemicals that start a chemical reaction
  7. an energy rich molecule
  8. liquid in the mouth that contains enzymes
  9. the type of energy when something is at rest

20 Clues: an energy rich molecule • an enzyme that digests fats • the amount of energy in food • an enzyme that digests proteins • the reactant an enzyme bonds with • the type of energy that deals with motion • a catalyst produced only in living things • liquid in the mouth that contains enzymes • the chemicals that start a chemical reaction • ...

Chemical Reactions Vocab 2017-01-12

Chemical Reactions Vocab crossword puzzle
Across
  1. a substance that takes part in and undergoes change during a reactionsinglereplacement a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
  2. a chemical equation that does not indicate the relative amounts of the reactants and products.
  3. is a new material formed in a chemical reaction
  4. a multiplier or factor that measures some property
  5. chemical equation for a reaction which lists only those species participating in the reaction
  6. a chemical reaction where the reactants form products that, in turn, react together to give the reactants back.
  7. when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side
Down
  1. is a useful guide for predicting the products of metal displacement reactions
  2. the solvent is water.
  3. the amount of product obtained in a chemical reaction
  4. a reaction where two or more elements or compounds (reactants) combine to form a single compound
  5. a single compound breaks down into two or more elements or new compounds
  6. exists in the same form on both the reactant and product sides of a chemical reaction
  7. a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
  8. symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
  9. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  10. (commonly known as burning ) is an exothermic reaction in which something reacts with oxygen.

17 Clues: the solvent is water. • is a new material formed in a chemical reaction • a multiplier or factor that measures some property • the amount of product obtained in a chemical reaction • a single compound breaks down into two or more elements or new compounds • is a useful guide for predicting the products of metal displacement reactions • ...

Chapter 10 Vocab 2013-01-16

Chapter 10 Vocab crossword puzzle
Across
  1. A chemical reaction in which two or more substances react to yield a single product.
  2. An ionic equation that shows all the particles in a solution as they realistically exist.
  3. A chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light.
  4. A chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound.
  5. The process by which the atoms of one or more substances are rearranged to form different substances; occurrence can be indicated by changes in temperature, color, odor and physical state.
  6. A solution in which the solvent is water.
  7. A substance dissolved in a solution.
  8. An ionic equation that includes only the particles that participate in the reaction.
Down
  1. An ion that does not participate in a reaction and usually is not shown in an ionic expression.
  2. A solid produced during a chemical reaction in a solution.
  3. A chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds.
  4. A chemical reaction that involves the exchange of positive ions between two compounds and produces either a precipitate, a gas or water.
  5. The substance that dissolves a solute to form a solution.
  6. In the chemical equation, the number of written in from of a reactant or product; it tells the smallest number of particles of the substance involved in the reaction.
  7. A statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved in the chemical reaction.
  8. The starting substance in a chemical reaction.
  9. A substance formed during a chemical reaction.

17 Clues: A substance dissolved in a solution. • A solution in which the solvent is water. • The starting substance in a chemical reaction. • A substance formed during a chemical reaction. • The substance that dissolves a solute to form a solution. • A solid produced during a chemical reaction in a solution. • ...

PS 3.2.2 & 3.2.2 2023-12-04

PS 3.2.2 & 3.2.2 crossword puzzle
Across
  1. For chemical reactions to take place, the reacting molecule must do this with enough force to break intermolecular bonds.
  2. This states that mass is neither created nor destroyed.
  3. These are inhibitors used to prevent spoilage of food.
  4. Chemical reactions frequently take place in a series of simple steps called this.
  5. Chemists balance equations using this in front of the formulas of the reactants and products to balance equations.
  6. This is the slowest pathway along a reaction pathway.
  7. A description using chemical symbols and formulas to show the reactants and products in a chemical reaction.
  8. A substance that increases the reaction rate without being permanently changed.
  9. An equation in which the number of atoms of each element on the reactant side is equal to the number of atoms on the product side.
  10. In chemical equations this state is represented by a L.
Down
  1. For chemical reactions to take place, after intermolecular bonds have been broken, these types of atoms must be in the right position to bond with each other.
  2. A measure of the change in concentration of the reactants over a period of time.
  3. Lowering this will decrease a reaction rate while increasing it will increase a reaction rate.
  4. A substance that slows down or stops a chemical reaction.
  5. For a chemical reaction to be accurate, it must contain the correct _______________ of the reactants and products.
  6. In chemical equations if a substance can be dissolved in water it is called this a represented by the letters aq.
  7. A higher level of this in reactants will typically increase a reaction because there is more reactant to react.
  8. In chemical equations this state is represented by a letter s.
  9. area Increasing this, which is done by crushing a reactant into smaller pieces, will increase the reaction rate.
  10. For a chemical equation to be valuable, it must represent the known facts about a reaction. All reactants and products must be this...
  11. In chemical equations this state is represented by a g.

21 Clues: This is the slowest pathway along a reaction pathway. • These are inhibitors used to prevent spoilage of food. • This states that mass is neither created nor destroyed. • In chemical equations this state is represented by a g. • In chemical equations this state is represented by a L. • A substance that slows down or stops a chemical reaction. • ...

chapter 8 2023-03-09

chapter 8 crossword puzzle
Across
  1. ,an acid that completely dissociates to H ions in solution
  2. ,a reaction that forms water when an acid is mixed with a base
  3. ,a substance that produces hydroxide ions in a solution
  4. ,a reaction in which a solid forms and separates from the solution as a solid
  5. ,a chemical equation showing the complete forms of all reactants and products
  6. ,a chemical reaction in which a compound if formed from simpler materials
  7. ,a base that completely dissociates to produce OH ions in a solution
  8. ,the solid that forms in a precipitation state
  9. ,occurs when a compound is broken down into simpler substances
  10. ,a chemical reaction involving oxygen as one of the reactants that produce enough heat so it results in flames
  11. ,a solid that readily dissolves in water
  12. ,a substance that produces hydrogen ions in solution; a proton donor
Down
  1. ,a chemical reaction involving the transfer of electrons
  2. ,a reaction in which ions in two compounds exchange places forming 2 new compounds
  3. ,chemical equation for a reaction in solution showing only those components that are directly involved in the reaction
  4. ,a chemical equation for a reaction in solution representing all strong electrolytes
  5. ,a reaction in which one element replaces another element in a compound
  6. ,ions presented in solution that do not participate directly in a reaction
  7. ,ionic compound
  8. ,a solid that dissolves in a much smaller degree that is not detectable to the human eye

20 Clues: ,ionic compound • ,a solid that readily dissolves in water • ,the solid that forms in a precipitation state • ,a substance that produces hydroxide ions in a solution • ,a chemical reaction involving the transfer of electrons • ,an acid that completely dissociates to H ions in solution • ,a reaction that forms water when an acid is mixed with a base • ...

Unit 2 Review 2025-09-17

Unit 2 Review crossword puzzle
Across
  1. molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
  2. a chemical reaction releases more energy than it absorbs
  3. change substances into different substances by breaking and forming chemical bonds
  4. when the products and reactants are at the same concentration
  5. polymers that are made up of monomers called nucleotides
  6. molecules made of carbon, hydrogen, and oxygen
  7. substances changes during a chemical reaction
  8. substances made by a chemical reaction
Down
  1. chains of carbon atoms bonded to hydrogen atoms
  2. large molecule made of several parts
  3. a chemical reaction absorbs more energy that it releases
  4. catalysts for chemical reactions in living things
  5. the amount of energy that will break a bond between two atoms
  6. nonpolar molecules that include fats, oils, and cholesterols
  7. a polymer made of monomers called amino acids
  8. increases the rate of the chemical reaction
  9. the amount of energy that needs to be absorbed for a chemical reaction to start
  10. specific reactants that an enzyme acts on

18 Clues: large molecule made of several parts • substances made by a chemical reaction • specific reactants that an enzyme acts on • increases the rate of the chemical reaction • a polymer made of monomers called amino acids • substances changes during a chemical reaction • molecules made of carbon, hydrogen, and oxygen • chains of carbon atoms bonded to hydrogen atoms • ...

Chapter 10 Vocab 2013-01-16

Chapter 10 Vocab crossword puzzle
Across
  1. A solid produced during a chemical reaction in a solution.
  2. A substance dissolved in a solution.
  3. A chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds.
  4. The process by which the atoms of one or more substances are rearranged to form different substances; occurrence can be indicated by changes in temperature, color, odor and physical state.
  5. In the chemical equation, the number of written in from of a reactant or product; it tells the smallest number of particles of the substance involved in the reaction.
  6. A chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound.
  7. A statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved in the chemical reaction.
  8. The substance that dissolves a solute to form a solution.
Down
  1. A chemical reaction in which two or more substances react to yield a single product.
  2. An ionic equation that includes only the particles that participate in the reaction.
  3. A chemical reaction that involves the exchange of positive ions between two compounds and produces either a precipitate, a gas or water.
  4. An ion that does not participate in a reaction and usually is not shown in an ionic expression.
  5. An ionic equation that shows all the particles in a solution as they realistically exist.
  6. A chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light.
  7. The starting substance in a chemical reaction.
  8. A substance formed during a chemical reaction.
  9. A solution in which the solvent is water.

17 Clues: A substance dissolved in a solution. • A solution in which the solvent is water. • The starting substance in a chemical reaction. • A substance formed during a chemical reaction. • The substance that dissolves a solute to form a solution. • A solid produced during a chemical reaction in a solution. • ...

KS3 Chemical Reactions Crossword 2024-07-15

KS3 Chemical Reactions Crossword crossword puzzle
Across
  1. A reaction that transfers energy to the surroundings.(10)
  2. A physical change from one state of matter to another. For example, when a solid changes to a liquid.(6,2,5)
  3. A substance that increases the rate of a chemical reaction.(8)
  4. The average kinetic energy of the particles in a substance, measured in degrees Celsius (°C).(11)
  5. A substance that is formed in a chemical reaction.(7)
  6. A force that holds atoms together in molecules.(8,4)
  7. An equation that uses only the names of the reactants and products to model a chemical reaction.(4,8)
  8. A reaction in which the products can react to produce the original reactants. Represented by: A + B ⇌ C + D.(10,8)
  9. A process that involves rearrangement of atoms to produce new substances.(8,8)
  10. No atoms are lost or made during a chemical reaction so the mass of the products equals the mass of the reactants.(12,2,4)
  11. A reaction that takes in energy from the surroundings.(11)
  12. The loss of electrons from a substance or the gain of oxygen by a substance.(9)
Down
  1. When bubbles are observed due to the production of a gas in a chemical reaction.(13)
  2. A substance made of more than one atom held together by covalent bonds.(8)
  3. The smallest part of an element that can exist.(4)
  4. Stores energy in a chemical store which it can release as heat.(4)
  5. A reaction in which a single reactant breaks down when heated, forming two or more products.(7,13)
  6. A reaction between a substance and oxygen in the air. The scientific word for burning.(10)
  7. A substance that takes part in a chemical reaction.(8)
  8. To mix a solute with a solvent to form a solution.(8)
  9. A measure of how quickly a reactant is used up or a product is formed in a chemical reaction.(4,2,8)

21 Clues: The smallest part of an element that can exist.(4) • A force that holds atoms together in molecules.(8,4) • A substance that is formed in a chemical reaction.(7) • To mix a solute with a solvent to form a solution.(8) • A substance that takes part in a chemical reaction.(8) • A reaction that transfers energy to the surroundings.(10) • ...

Autumn Roe Chapter 13 2016-10-12

Autumn Roe Chapter 13 crossword puzzle
Across
  1. Description of a solution in which the hydronium ion concentration is equal to the hydroxide ion concentration.
  2. The reacting substances in a chemical reaction.
  3. A rapid exothermic oxidation reduction reaction between a material and a molecular oxygen.
  4. Description of a substance that can behave as either an acid or a base.
  5. A measure of the acidity of a solution; equal to the negative logarithm of the hydronium ion concentration.
  6. equation A representation of a chemical reaction in which reactants are written to the left of an arrow that points toward the products on the right
  7. Description of a chemical reaction in which there is a net absorption of energy.
  8. energy The minimum energy required in order for a chemical reaction to proceed.
  9. Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
Down
  1. The deterioration of a metal, typically caused by atmospheric oxygen.
  2. ion A polyatomic ion made by adding a proton to a water molecule.
  3. A reaction between an acid and a base.
  4. ion A polyatomic ion made by removing a proton from a water molecule.
  5. The process by which a reactant gains one or more electrons.
  6. Description of a chemical reaction in which there is a net release of energy.
  7. A substance that accepts hydrogen ions.
  8. energy The amount of energy required to pull two bonded atoms apart
  9. description of a solution in which the hydroxide ion concentration is higher than the hydronium ion.
  10. The new materials formed in a chemical reaction.
  11. The process by which a reactant loses one or more electrons.
  12. A substance that donates hydrogen ions.

21 Clues: A reaction between an acid and a base. • A substance that accepts hydrogen ions. • A substance that donates hydrogen ions. • The reacting substances in a chemical reaction. • The new materials formed in a chemical reaction. • The process by which a reactant gains one or more electrons. • The process by which a reactant loses one or more electrons. • ...

Vocab Words 2023-03-08

Vocab Words crossword puzzle
Across
  1. an oxidation–reduction reaction that involves
  2. a chemical reaction in which a compound is formed from simpler materials
  3. occurs when an electron relocates from an atom or molecule to another such chemical entity
  4. a mathematical relationship or rule expressed in symbols
  5. ions present in solution that do not participate directly in a reaction
  6. a chemical reaction in which two molecules of hydrogen combine with one molecule of oxygen
  7. an acid that completely dissociates (ionizes) to produce ions in solution
  8. a substance that takes part in and undergoes change during a reaction.
  9. a reaction in which a solid forms and separates from the solution as a solid
  10. a chemical equation for a reaction in solution showing only those components that are directly involved in the reaction
  11. a base that completely dissociates to produce ions in solution
  12. a solid that readily dissolves in water
  13. a reaction in which ions in two compounds exchange places, forming two new compounds
  14. occurs when a compound is broken down into simpler substances
  15. a substance that is present at the end of a chemical reaction
  16. a chemical reaction involving the transfer of electrons
  17. a reaction that forms water when an acid is mixed with a base
Down
  1. a substance that produces hydroxide ions in solution; a proton acceptor
  2. a reaction in which one element replaces another element in a compound
  3. a process that involves rearrangement of the molecular or ionic structure of a substance
  4. a chemical showing the complete forms of all reactants and products
  5. a substance that dissolves in water, dissociating completely into ions
  6. a compound that increases the H+ ion concentration in an aqueous solution
  7. a substance that produces hydrogen ions in aqueous solution; a proton donor
  8. an ionic compound
  9. a chemical equation for a reaction in solution representing all strong electrolytes
  10. the solid that forms in a precipitation reaction
  11. a chemical compound that neutralizes or effervesces with acids and turns litmus blue
  12. a compound that increases the OH− ion concentration in aqueous solution
  13. a solid that dissolves to such a small degree that it is not detectable to the naked eye

30 Clues: an ionic compound • a solid that readily dissolves in water • an oxidation–reduction reaction that involves • the solid that forms in a precipitation reaction • a chemical reaction involving the transfer of electrons • a mathematical relationship or rule expressed in symbols • occurs when a compound is broken down into simpler substances • ...

Exothermic and Endothermic reactions 2020-12-18

Exothermic and Endothermic reactions crossword puzzle
Across
  1. Potassium,water and hydrogen mixed together, what is the reaction?
  2. When the surroundings vibrate more and more, what energy is given?
  3. Energy is stored in the bonds of chemical compounds.
  4. The type of reaction in exothermic reaction.
  5. Symbolic representation of a chemical reaction in the form of symbols and formulae.
  6. What temperature becomes when energy is taken from the environment?
  7. During reaction of sodium chloride, what solute in the reaction?
  8. When iron rusts, it combines with oxygen from the air.
  9. What reaction when heat evolved?
  10. A reaction includes base and acid react to form water and salt.
  11. Chemical formula Na2SO3.
  12. Energy that is released to the environment.
  13. Air like substances that can move around freely and flow.
Down
  1. Reaction between carbon and oxygen.
  2. Reaction between sodium carbonate and chloride.
  3. Matter that has properties and composition.
  4. Related to exothermic reaction, reaction between fuel and oxidant.
  5. A substance combines with oxygen.
  6. Reaction when temperature increases.
  7. What is the chemical reaction in which energy is taken in?
  8. Another term used for burning.
  9. A forming of water vapor in clouds.
  10. A reaction between copper wire and sulfur.
  11. Weak organic acid that has molecular formula.
  12. Energy including in Endothermic reaction.
  13. How energy do the surroundings?
  14. Including in exothermic reaction.
  15. Another process in endothermic reaction?
  16. Reaction between magnesium and chlorine gas.
  17. How much energy stores in the products?
  18. During reaction of potassium chloride,what solvent in the reaction?

31 Clues: Chemical formula Na2SO3. • Another term used for burning. • How energy do the surroundings? • What reaction when heat evolved? • A substance combines with oxygen. • Including in exothermic reaction. • Reaction between carbon and oxygen. • A forming of water vapor in clouds. • Reaction when temperature increases. • How much energy stores in the products? • ...

Exothermic and Endothermic reactions 2020-12-18

Exothermic and Endothermic reactions crossword puzzle
Across
  1. Reaction between carbon and oxygen.
  2. Reaction between sodium carbonate and chloride.
  3. Matter that has properties and composition.
  4. During reaction of sodium chloride, what solute in the reaction?
  5. A reaction includes base and acid react to form water and salt.
  6. Energy is stored in the bonds of chemical compounds.
  7. Including in exothermic reaction.
  8. Energy that is released to the environment.
  9. When iron rusts, it combines with oxygen from the air.
  10. Related to exothermic reaction, reaction between fuel and oxidant.
  11. During reaction of potassium chloride,what solvent in the reaction?
  12. What is the chemical reaction in which energy is taken in?
  13. Symbolic representation of a chemical reaction in the form of symbols and formulae.
  14. Another term used for burning.
  15. How energy do the surroundings?
  16. The type of reaction in exothermic reaction.
  17. A reaction between copper wire and sulfur.
  18. Reaction between magnesium and chlorine gas.
  19. Weak organic acid that has molecular formula.
  20. How much energy stores in the products?
Down
  1. A substance combines with oxygen.
  2. When the surroundings vibrate more and more, what energy is given?
  3. What reaction when heat evolved?
  4. Another process in endothermic reaction?
  5. Energy including in Endothermic reaction.
  6. What temperature becomes when energy is taken from the environment?
  7. Reaction when temperature increases.
  8. Potassium,water and hydrogen mixed together, what is the reaction?
  9. A forming of water vapor in clouds.
  10. Air like substances that can move around freely and flow.
  11. Chemical formula Na2SO3.

31 Clues: Chemical formula Na2SO3. • Another term used for burning. • How energy do the surroundings? • What reaction when heat evolved? • A substance combines with oxygen. • Including in exothermic reaction. • Reaction between carbon and oxygen. • A forming of water vapor in clouds. • Reaction when temperature increases. • How much energy stores in the products? • ...

Reactions Vocab 2020-09-14

Reactions Vocab crossword puzzle
Across
  1. a process in which one or more substances are changed into one or more different substances
  2. a solid material that is formed in a chemical reaction that separates from the solution
  3. a reaction that takes place with so little energy added to start the reaction that it seems as if no activation energy is needed
  4. energy needed to start a chemical reaction
  5. a reaction in which a compound breaks down
  6. a reaction in which compounds exchange ions
  7. a reaction in which two or more substances combine to form a new compound
  8. a substance that changes the rate of a chemical reaction
  9. a shorthand method used by scientists to show the changes that take place in a chemical equation
Down
  1. the substances formed in a reaction
  2. a reaction that gives off energy
  3. a whole number placed in front of an element or compound
  4. a reaction that absorbs energy
  5. a reaction that takes place when one element replaces another forming a new compound
  6. the starting substances in a chemical reaction
  7. catalysts that slow down chemical reactions

16 Clues: a reaction that absorbs energy • a reaction that gives off energy • the substances formed in a reaction • energy needed to start a chemical reaction • a reaction in which a compound breaks down • a reaction in which compounds exchange ions • catalysts that slow down chemical reactions • the starting substances in a chemical reaction • ...

Chemistry Crossword Puzzle 2021-10-14

Chemistry Crossword Puzzle crossword puzzle
Across
  1. a change that alters the form or appearance of a substance but doe not convert the mater into a new substance
  2. a combination of symbols that represent the elements in a compound
  3. the relationship between mass and volume of an object
  4. a change in matter that forms one or more new substances
  5. a way to show chemical reactions using element symbols instead of words
  6. anything that has mass and takes up space
  7. a substance that consists of two or more pure elements, compounds or both that are in the same place but NOT chemically combined
  8. the force that holds atoms together
  9. a substance that cannot be broken down into any other substances by chemical or physical means
  10. the amount of space that matter occupies
  11. Reaction occur when chemical bonds are made or broken and new bonds form making new substances
  12. a particle made of tow or more atoms chemically bonded together
  13. a type of chemical reaction when one element replaces another in a compound or when two elements in different compounds trade places
  14. a type of chemical reaction when two or more substances combine to make a more complex substance
  15. a type of chemical reaction when chemical bonds break compounds into simpler substances
Down
  1. a type of chemical reaction that absorbs energy from its environment
  2. the materials or substances at the beginning of a chemical reaction
  3. a solid that forms from solution during a chemical reaction
  4. a one or two letter set of characters used to identify an element
  5. numbers in a chemical formula that show the number of atoms of an element in that molecule or the ratio of elements in a compound
  6. the law that states that matter cannot be created or destroyed only transformed
  7. a biological catalyst in cells
  8. the amount of one material in a given volume of another material
  9. the minimum amount of energy needed to start a chemical reaction
  10. the materials or substances that results from a chemical reaction
  11. the measurement of how much matter in an object
  12. the number placed in front of a chemical formula in a chemical equation
  13. a material used to decrease the rate of a chemical reaction
  14. a type of chemical reaction that releases energy in the form of heat
  15. the measure of energy in the environment
  16. the measure of the force of gravity on an object
  17. a material that increases the rate of a reaction by lowering the activation energy
  18. the smallest particle of an element
  19. a substance made of two or more elements chemically combined in a specific ratio or proportion
  20. a well mixed mixture
  21. the study of the properties of matter and how the matter changes

36 Clues: a well mixed mixture • a biological catalyst in cells • the force that holds atoms together • the smallest particle of an element • the measure of energy in the environment • the amount of space that matter occupies • anything that has mass and takes up space • the measurement of how much matter in an object • the measure of the force of gravity on an object • ...

8th grade Topic 9 chemical reactions 2024-12-08

8th grade Topic 9 chemical reactions crossword puzzle
Across
  1. the measure of how much solute can dissolve in a solvent at a given temperature
  2. if a solution is _________ then it is able to dissolve more solute at a given temp
  3. a chemical reaction occurs when existing chemical ___ are broken and new ones may be made
  4. type of reaction that gives off energy
  5. a mixture where particles can be seen and separated by settling or filtration.
  6. in this type of reaction, one complex compound will break down into simpler ones
  7. this number in front of a compound in a chemical equation tells you how many molecules of that compound there are
  8. a compound that speeds up a chemical reaction without itself being consumed
  9. all the atoms of each element reacting in a chemical equation must ___ the number of atoms that are being produced.
  10. crushing or breaking something up will increase the __ __ of the substance and allow more surfaces for the reaction to take place
  11. this type of reaction takes simple things and combines them to make them more complex
  12. ___ energy is the minimum amount of energy needed for a reaction to take place
  13. these are examples of synthetic foods- they are added too food to make them last longer
  14. a mixture that you can see the separate parts
  15. separating a mixture by heating so that the part that has a lower boiling point will evaporate first, then it is collected while the gas cools and condenses
  16. increasing this will cause particles to move faster and will increase the reaction rate, lowering it will decrease the rate
  17. you can put chemical inhibitors called ___ onto food to keep them from decaying
  18. this small number following an element’s symbol in a chemical equation tells you how many atoms of that element are present in the reaction
  19. the Law of ___ __ ___ states matter cannot be created nor destroyed, only changed
  20. in this type of reaction, positive ions of both compound switch places
  21. a mixture that is the same throughout
  22. the things that are produced in a chemical reaction
  23. the scattering of light as it passes through a colloid is called the ___ __
  24. when determining if something will dissolve something else it is helpful to remember the phrase “___ ____ ____”
Down
  1. a compound that prevents or slows down a chemical reaction
  2. the arrow in a chemical equation means this word
  3. type of reaction that absorbs energy as it happens
  4. the amount of __ in a given volume is concentration
  5. these/this is any compound that is reacting, it is on the left side of the arrow in a chemical equation
  6. a mixture containing small undissolved particles that do not settle out- they can scatter light.
  7. a solid may form when 2 liquids react, it is called this, a ___
  8. what gets dissolved in a solution
  9. what does the dissolving In a solution
  10. long chains of molecules made of repeating units called monomers - examples are plastics and wool
  11. if a solution is _______ then it contains more solute than a saturated one. Solution is unstable and may form crystals
  12. a ___ change occurs when a new substance is created
  13. a chemical ___ shows the number of chemicals and how they react to form now substances
  14. in this type of reaction, one substance changes places with another
  15. if chemicals change ___, it may indicate a chemical reaction has taken place
  16. material made by humans and are not natural are called __________
  17. in this type of reaction system, the reaction is contained, matter cannot enter or exit
  18. if this (tiny bubbles) are produced during a reaction, it may indicate a chemical reaction
  19. salt and water are considered ___ ___ because they have fixed chemical compositions
  20. a ___ change is one in which the appearance of the matter changes, it does not change what it is
  21. Material made up of 2 or more substances that can be separated by physical means
  22. if a solution is __________ then contains all the solute it can at a given temp
  23. in this type of chemical reaction system, the environment can influence the reaction, or matter can enter and escape from the reaction
  24. adding water or another solvent to a solution will ____ the mixture and could slow down the reaction
  25. these are catalysts in our body that speed up chemical reactions

49 Clues: what gets dissolved in a solution • a mixture that is the same throughout • type of reaction that gives off energy • what does the dissolving In a solution • a mixture that you can see the separate parts • the arrow in a chemical equation means this word • type of reaction that absorbs energy as it happens • the amount of __ in a given volume is concentration • ...

8th Chemical Reactions Topic 9 2025-11-29

8th Chemical Reactions Topic 9 crossword puzzle
Across
  1. the things that are produced in a chemical reaction
  2. these/this is any compound that is reacting, it is on the left side of the arrow in a chemical equation
  3. a mixture that you can see the separate parts
  4. type of reaction that gives off energy
  5. a ___ change is one in which the appearance of the matter changes, it does not change what it is
  6. a chemical reaction occurs when existing chemical ___ are broken and new ones may be made
  7. this small number following an element’s symbol in a chemical equation tells you how many atoms of that element are present in the reaction
  8. type of reaction that absorbs energy as it happens
  9. the measure of how much solute can dissolve in a solvent at a given temperature
  10. all the atoms of each element reacting in a chemical equation must ___ the number of atoms that are being produced.
  11. in this type of reaction, one substance changes places with another
  12. if this (tiny bubbles) are produced during a reaction, it may indicate a chemical reaction
  13. this type of reaction takes simple things and combines them to make them more complex
  14. separating a mixture by heating so that the part that has a lower boiling point will evaporate first, then it is collected while the gas cools and condenses
  15. what gets dissolved in a solution
  16. what does the dissolving In a solution
  17. these are catalysts in our body that speed up chemical reactions
  18. in this type of reaction, one complex compound will break down into simpler ones
  19. this number in front of a compound in a chemical equation tells you how many molecules of that compound there are
  20. salt and water are considered ___ ___ because they have fixed chemical compositions
  21. increasing this will cause particles to move faster and will increase the reaction rate, lowering it will decrease the rate
  22. the Law of ___ __ ___ states matter cannot be created nor destroyed, only changed
  23. a chemical ___ shows the number of chemicals and how they react to form now substances
  24. long chains of molecules made of repeating units called monomers - examples are plastics and wool
  25. material made by humans and are not natural are called __________
  26. in this type of reaction system, the reaction is contained, matter cannot enter or exit
  27. a mixture where particles can be seen and separated by settling or filtration.
Down
  1. crushing or breaking something up will increase the __ __ of the substance and allow more surfaces for the reaction to take place
  2. if a solution is _______ then it contains more solute than a saturated one. Solution is unstable and may form crystals
  3. these are examples of synthetic foods- they are added too food to make them last longer
  4. a compound that prevents or slows down a chemical reaction
  5. when determining if something will dissolve something else it is helpful to remember the phrase “___ ____ ____”
  6. in this type of reaction, positive ions of both compound switch places
  7. if a solution is _________ then it is able to dissolve more solute at a given temp
  8. a compound that speeds up a chemical reaction without itself being consumed
  9. ___ energy is the minimum amount of energy needed for a reaction to take place
  10. a ___ change occurs when a new substance is created
  11. if a solution is __________ then contains all the solute it can at a given temp
  12. a mixture containing small undissolved particles that do not settle out- they can scatter light.
  13. adding water or another solvent to a solution will ____ the mixture and could slow down the reaction
  14. a solid may form when 2 liquids react, it is called this, a ___
  15. the scattering of light as it passes through a colloid is called the ___ __
  16. if chemicals change ___, it may indicate a chemical reaction has taken place
  17. a mixture that is the same throughout
  18. Material made up of 2 or more substances that can be separated by physical means
  19. in this type of chemical reaction system, the environment can influence the reaction, or matter can enter and escape from the reaction
  20. you can put chemical inhibitors called ___ onto food to keep them from decaying
  21. the arrow in a chemical equation means this word
  22. the amount of __ in a given volume is concentration

49 Clues: what gets dissolved in a solution • a mixture that is the same throughout • type of reaction that gives off energy • what does the dissolving In a solution • a mixture that you can see the separate parts • the arrow in a chemical equation means this word • type of reaction that absorbs energy as it happens • the things that are produced in a chemical reaction • ...

Science vocab chap 7 2024-01-10

Science vocab chap 7 crossword puzzle
Across
  1. a combination of chemical formulas and symbols that models a chemical reaction.
  2. a chemical reaction in which a single reactant breaks down into two or more products
  3. SI fundamental unit for the quantity of matter in a substance; a count equal to 6.022 x 10
  4. a substance that enters into a chemical reaction
  5. a loss of electrons in a chemical reaction
Down
  1. A chemical reaction in which one element in a compound is replaced by another element; also known as a single-displacement reaction
  2. A chemical reaction in which two compounds swap cations or anions with each other; also known as double displacement reaction
  3. a gain of electrons in a chemical reaction
  4. a chemical reaction in which two or more reactants combine into a single, more complex product
  5. a substance that is formed during a chemical reaction
  6. the mass of one mole in a substance
  7. a process that changes a substance into one or more different substances.
  8. an exothermic chemical reaction in which a fuel reacts with oxygen
  9. a number placed in front of a chemical formula within a chemical equation that shows how many units of a reactant or product are needed to balance the chemical equation

14 Clues: the mass of one mole in a substance • a gain of electrons in a chemical reaction • a loss of electrons in a chemical reaction • a substance that enters into a chemical reaction • a substance that is formed during a chemical reaction • an exothermic chemical reaction in which a fuel reacts with oxygen • ...

Science Vocab (chapter 7) 2024-01-10

Science Vocab (chapter 7) crossword puzzle
Across
  1. An exothermic chemical reaction in which a fuel reacts with oxygen
  2. A chemical reaction in which one element in a compound is replaced by another element; also known as a single displacement reaction
  3. A loss of electrons in a chemical reaction
  4. The mass of one mole of a substance
  5. A substance that enters into a chemical reaction
Down
  1. A chemical reaction in which two compounds swap cations or anions with each other; also known as a double-displacement reaction
  2. A chemical reaction in which two or more reactants combine into a single, more complex product
  3. A combination of chemical formulas and symbols that models a chemical reaction
  4. A chemical reaction in which a single reactant breaks down into two or more products
  5. A process that rearranges the atoms in one or more substances into one or more new substances
  6. A gain of electrons in a chemical reaction
  7. SI fundamental unit for the quantity of matter in a substance; a count equal to 6.022x1023
  8. A number placed in front of a chemical formula within a chemical equation that shows how many units of a reactant or product are needed to balance the chemical equation
  9. A substance that is formed during a chemical reaction

14 Clues: The mass of one mole of a substance • A gain of electrons in a chemical reaction • A loss of electrons in a chemical reaction • A substance that enters into a chemical reaction • A substance that is formed during a chemical reaction • An exothermic chemical reaction in which a fuel reacts with oxygen • ...

Chapter 4 Vocab 2022-11-18

Chapter 4 Vocab crossword puzzle
Across
  1. When two or more elements or compounds combine to make a more complex substance.
  2. When one element replaces another element in a compound, or if two elements in different compounds trade places.
  3. The biological catalysts in your body that help some chemical reactions occur at body temperature.
  4. Something that increases the reaction rate by lowering the activation energy needed.
  5. A change in matter that produces one or more new substances.
  6. A way to show a chemical reaction, using symbols instead of words.
  7. A reaction that occurs when compounds break down into simpler products.
  8. A solid that forms from liquids during a chemical reaction.
  9. The principle that states that during a chemical reaction matter is not created nor destroyed.
Down
  1. A number placed in front of a chemical formula in an equation.
  2. The minimum amount of energy needed to start a chemical reaction.
  3. A material used to decrease the rate of a chemical reaction.
  4. When the energy released as the products form is greater than the energy required to break the bonds of the reactants.
  5. Substance that undergo chemical changes.
  6. The amount of a substance in a given volume.
  7. Any change that alters the form or appearance of a substance but does not change it into another substance.
  8. When more energy is required to break the bonds of the reactants than is released by the formation of the products.
  9. When matter can enter from or escape to the surroundings.
  10. The new substances that form in a chemical reaction.
  11. Somewhere that matter does not enter or leave.

20 Clues: Substance that undergo chemical changes. • The amount of a substance in a given volume. • Somewhere that matter does not enter or leave. • The new substances that form in a chemical reaction. • When matter can enter from or escape to the surroundings. • A solid that forms from liquids during a chemical reaction. • ...

Science Vocabulary 2017-09-04

Science Vocabulary crossword puzzle
Across
  1. molecular subunit of a polymer
  2. Bond Attraction between atoms that creates chemical substances containing two or
  3. base.
  4. Synthesis chemical reaction in which water is formed when two molecules are
  5. chemical reaction in which a water molecule is broken and one molecule is broken
  6. carbohydrate monomer made of only one sugar molecule.
  7. large carbon-based molecule formed by monomers.
  8. depending on bonds between amino acids.
  9. atoms.
  10. monomer that forms DNA and has a phosphate group, a sugar and a nitrogen-
  11. substance that decreases activation energy and increases reaction rate in a chemical
  12. protein that catalyzes chemical reactions for organisms.
  13. Acid molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen
  14. substance that dissolves in a solvent and is present at a lower concentration than the solvent.
Down
  1. substance formed by a chemical reaction.
  2. substance in which solutes dissolve and that is present in greatest concentration in a solution.
  3. and forming of chemical bonds.
  4. Acid polymer of nucleotides, the genetic material of organisms.
  5. Energy energy input necessary to initiate a chemical reaction.
  6. polymer composed of amino acids linked by peptide bonds; folds into a particular
  7. molecule composed of carbon, hydrogen and oxygen; includes sugars and
  8. sometimes sulfur.
  9. large organic molecule; also referred as biomolecule-molecule produced or used my living organisms.
  10. nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils.
  11. reactant in a chemical reaction upon which an enzyme acts.
  12. substance that is changed by a chemical reaction.
  13. into two products.

27 Clues: base. • atoms. • sometimes sulfur. • into two products. • molecular subunit of a polymer • and forming of chemical bonds. • depending on bonds between amino acids. • substance formed by a chemical reaction. • large carbon-based molecule formed by monomers. • substance that is changed by a chemical reaction. • carbohydrate monomer made of only one sugar molecule. • ...

Chapter 10 Vocab 2013-01-16

Chapter 10 Vocab crossword puzzle
Across
  1. A chemical reaction in which two or more substances react to yield a single product.
  2. A solid produced during a chemical reaction in a solution.
  3. A substance formed during a chemical reaction.
  4. A statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved in the chemical reaction.
  5. A chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds.
  6. A chemical reaction that involves the exchange of positive ions between two compounds and produces either a precipitate, a gas or water.
  7. The substance that dissolves a solute to form a solution.
  8. In the chemical equation, the number of written in from of a reactant or product; it tells the smallest number of particles of the substance involved in the reaction.
  9. A substance dissolved in a solution.
  10. The process by which the atoms of one or more substances are rearranged to form different substances; occurrence can be indicated by changes in temperature, color, odor and physical state.
Down
  1. A chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound.
  2. The starting substance in a chemical reaction.
  3. A solution in which the solvent is water.
  4. An ion that does not participate in a reaction and usually is not shown in an ionic expression.
  5. An ionic equation that shows all the particles in a solution as they realistically exist.
  6. An ionic equation that includes only the particles that participate in the reaction.
  7. A chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light.

17 Clues: A substance dissolved in a solution. • A solution in which the solvent is water. • The starting substance in a chemical reaction. • A substance formed during a chemical reaction. • The substance that dissolves a solute to form a solution. • A solid produced during a chemical reaction in a solution. • ...

Unit 7 VMO 2025-03-07

Unit 7 VMO crossword puzzle
Across
  1. States that mass of all substances present before a chemical change equals the mass of all substances remaining after the change
  2. chemical reaction in which on element replaces another element in a compound
  3. Any characteristic of a substance such as flammability that can be observed that produces a new substance
  4. atom of an element that has a specific number of neutrons
  5. attraction formed between atoms when they share electrons.
  6. the force of attraction between the opposite charges of the ions in an ionic compound.
  7. is a neutral particle that forms as a result of electrons sharing among atoms.
  8. A type of chemical reaction that occurs when a substance reacts with the oxygen to produce energy in the form of heat and light
  9. when an atom loses electrons and becomes a positively charged Ion.
  10. is a charged particle that has either more or fewer electrons than protons.
  11. Any characteristic of a material such as size or shape that can be observed without changing the identity of the substances stays the same
  12. Shorthand Method used to describe chemical reactions.
Down
  1. Positively or negatively charged covalently bonded group of atoms
  2. chemical reaction in which one or more substances changed into a new substance
  3. in a chemical reaction is the substance that reacts.
  4. reaction in which two iconic compounds in a solution are combined can be produce a precipitate, water, or gas
  5. chemical reaction in which one substance breaks down into new substances
  6. is a chemical equation that only shows the chemical formulas of the reactants and the products involved in a reaction.
  7. chemical reaction in which two or more substances combine to form a different substance
  8. the new substance after a chemical reaction
  9. Substance in which the atoms of two or more elements are combined in fixed proportion
  10. When an atom gains electrons to become a negatively charged Ion

22 Clues: the new substance after a chemical reaction • in a chemical reaction is the substance that reacts. • Shorthand Method used to describe chemical reactions. • atom of an element that has a specific number of neutrons • attraction formed between atoms when they share electrons. • When an atom gains electrons to become a negatively charged Ion • ...

Physical Science 8.1 Review 2015-04-15

Physical Science 8.1 Review crossword puzzle
Across
  1. ______displacement is a type of reaction that occurs when two compounds exchange atoms or ions
  2. a chemical equation that has the same number of each type of atom on each side of the arrow is said to be__________
  3. chemical change resulting from a collision between atoms or molecules
  4. substances that produce hydroxide anions in a water solution; slippery; have a bitter taste
  5. the number before each molecular formula
  6. according to the law of conservation of_____, the total mass of the reactants is equal to the total mass of the products
  7. _____displacement is a type of reaction that occurs when an element in a compound is replaced by another element
  8. original substances that undergo a chemical reaction
Down
  1. this type of reaction occurs when two or more substances combine to form a third substance
  2. a chemical reaction that releases thermal energy
  3. a reaction that absorbs thermal energy
  4. this type of reaction occurs when a compound breaks down to form different substances
  5. to break apart
  6. reactants are located on the_______side of an equation
  7. an expression that uses chemical symbols to represent a chemical reaction
  8. chemical formulas cannot be _______to balance an equation
  9. substances that are neither acids nor bases
  10. substances that produce hydronium ions when dissolved in water; have a sour taste
  11. new substances produced by a reaction
  12. products are located on the________side of an equation
  13. any ionic compound that does not contain H or OH

21 Clues: to break apart • new substances produced by a reaction • a reaction that absorbs thermal energy • the number before each molecular formula • substances that are neither acids nor bases • a chemical reaction that releases thermal energy • any ionic compound that does not contain H or OH • original substances that undergo a chemical reaction • ...

Chapter 10 Vocab 2013-01-16

Chapter 10 Vocab crossword puzzle
Across
  1. A chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound.
  2. The substance that dissolves a solute to form a solution.
  3. A substance formed during a chemical reaction.
  4. The starting substance in a chemical reaction.
  5. A statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved in the chemical reaction.
  6. A chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light.
  7. A substance dissolved in a solution.
  8. A solution in which the solvent is water.
  9. ionic equation that shows all the particles in a solution as they realistically exist.
Down
  1. A chemical reaction in which two or more substances react to yield a single product.
  2. An ionic equation that includes only the particles that participate in the reaction.
  3. A chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds.
  4. A chemical reaction that involves the exchange of positive ions between two compounds and produces either a precipitate, a gas or water.
  5. A solid produced during a chemical reaction in a solution.
  6. The process by which the atoms of one or more substances are rearranged to form different substances; occurrence can be indicated by changes in temperature, color, odor and physical state.
  7. An ion that does not participate in a reaction and usually is not shown in an ionic expression.
  8. In the chemical equation, the number of written in from of a reactant or product; it tells the smallest number of particles of the substance involved in the reaction.

17 Clues: A substance dissolved in a solution. • A solution in which the solvent is water. • A substance formed during a chemical reaction. • The starting substance in a chemical reaction. • The substance that dissolves a solute to form a solution. • A solid produced during a chemical reaction in a solution. • ...

Ch. 8 Vocab 2022-05-03

Ch. 8 Vocab crossword puzzle
Across
  1. a type of chemical reaction that involves a transfer of electrons between two species.
  2. reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
  3. a reaction in which a compound breaks down into two or more simpler substances.
  4. chemical reaction in which one element is replaced by another in a compound.
  5. any substance that increases the rate of a reaction without itself being consumed.
  6. molecule that contains at least one unpaired electron.
  7. chemical reactions that release energy.
Down
  1. reactions that occur when two different atoms or molecules interact to form a different molecule or compound.
  2. a technique that uses direct electric current to drive an otherwise non-spontaneous chemical reaction.
  3. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  4. the process of burning something.
  5. the symbolic representation of a chemical reaction in the form of symbols and formulae.
  6. a substance that takes part in and undergoes change during a reaction.
  7. an article or substance that is manufactured or refined for sale.
  8. a biological catalyst and is almost always a protein.
  9. the substance on which an enzyme acts.
  10. chemical reaction that absorbs energy from the environment.
  11. ratio between the amounts in moles of any two compounds involved in a chemical reaction.

18 Clues: the process of burning something. • the substance on which an enzyme acts. • chemical reactions that release energy. • a biological catalyst and is almost always a protein. • molecule that contains at least one unpaired electron. • chemical reaction that absorbs energy from the environment. • an article or substance that is manufactured or refined for sale. • ...

Unit 5 - Шалгалтын дүнгээ ахиулах даалгавар 2021-10-27

Unit 5 - Шалгалтын дүнгээ ахиулах даалгавар crossword puzzle
Across
  1. Endothermic: ___ than surroundings
  2. Endothermic reaction: heat is __
  3. ___ stores energy in the form of chemical energy
  4. Chemical reaction in which energy is taken in
  5. Chemical reaction in which a substance combines with oxygen
  6. Example of endothermic reaction: ice __
  7. Exothermic: ___ than surroundings
  8. During an exothermic reaction, the temperature ___.
  9. Another term for burning
Down
  1. Exothermic reaction: heat is __
  2. potassium+___->potassium hydroxide+hydrogen
  3. Example of endothermic reaction: ice __
  4. Chemical reaction in which heat energy is given out
  5. Combustion is ___ reaction
  6. During an endothermic reaction, the temperature ___.
  7. Given out energy during an exothermic reaction

16 Clues: Another term for burning • Combustion is ___ reaction • Exothermic reaction: heat is __ • Endothermic reaction: heat is __ • Exothermic: ___ than surroundings • Endothermic: ___ than surroundings • Example of endothermic reaction: ice __ • Example of endothermic reaction: ice __ • potassium+___->potassium hydroxide+hydrogen • Chemical reaction in which energy is taken in • ...

year 9 chemical reactions 2024-10-27

year 9 chemical reactions crossword puzzle
Across
  1. The basic unit of a chemical element
  2. Substance produced at the end of a chemical reaction
  3. Process by which plants convert sunlight into chemical energy
  4. Process involving the breaking and forming of bonds to create new substances
  5. Reaction between an acid and a base to form water and salt
  6. Simple sugar that is an important energy source in organisms
  7. Substance with a sour taste and a pH less than 7
  8. Substance with a bitter taste and slippery feel with a pH greater than 7
  9. Chemical reaction that typically involves burning and releases energy
Down
  1. Substance that starts a chemical reaction
  2. Representation of a chemical reaction using symbols and formulas
  3. Law stating that matter cannot be created or destroyed in a chemical reaction
  4. Scale that measures the acidity or alkalinity of a solution
  5. Group of atoms bonded together
  6. Substance that changes color to show the presence of an acid or base
  7. Cellular process that converts food into energy
  8. of Conservation of Mass States that mass remains constant during a chemical reaction

17 Clues: Group of atoms bonded together • The basic unit of a chemical element • Substance that starts a chemical reaction • Cellular process that converts food into energy • Substance with a sour taste and a pH less than 7 • Substance produced at the end of a chemical reaction • Reaction between an acid and a base to form water and salt • ...

Physical and Chemical Properties and Changes 2024-01-17

Physical and Chemical Properties and Changes crossword puzzle
Across
  1. Physical property of metals that allows them to change shape
  2. Indication of a gas being produced in a chemical reaction
  3. When animals release energy by breaking down glucose
  4. Bleaching hair is a chemical change as indicated by a change in
  5. Example of wood or paper burning
  6. Energy is released in a chemical reaction
  7. Produced by the oxidation of iron
  8. Example of a physical change to paper
  9. Bubbles indicate the release of this in a chemical reaction
  10. Physical changes can usually be "undone"
  11. Solid formed when lemon juice and milk combine
  12. Yeast was used to speed up the chemical reaction
  13. Chemical property of how easy a substance can burn
Down
  1. Energy is absorbed in a chemical reaction
  2. When hydrogen peroxide breaks down to water and oxygen
  3. When plants absorb sunlight to make food
  4. Chemical changes cannot be "undone"
  5. Physical change of ice turning to a liquid
  6. Changes the composition of a substance
  7. Change that does not change composition
  8. Physical change of water turning to a gas
  9. Release of energy in chemical reactions
  10. Physical property of metals to be drawn into thin wires
  11. Anything that has mass and volume

24 Clues: Example of wood or paper burning • Produced by the oxidation of iron • Anything that has mass and volume • Chemical changes cannot be "undone" • Example of a physical change to paper • Changes the composition of a substance • Change that does not change composition • Release of energy in chemical reactions • When plants absorb sunlight to make food • ...

Chapter 2 study guide 2022-03-18

Chapter 2 study guide crossword puzzle
Across
  1. reaction A reaction that release energy in the form of heat is called an exothermic reaction
  2. system In an open system matter can enter from or escape to the surroundings
  3. A material used to decrease the rate of a reaction is an inhibitor
  4. The cells in our body containing biochemical catalysts
  5. It breaks down compounds into simpler products
  6. equation A chemical equation is short and easy way to to show chemical reactions using symbols instead of words
  7. The substance you have at the beginning are called reactants
  8. A solid that forms from solution during a chemical reaction is called precipitate
  9. A catalyst is a material that increases the rate of a reaction by lowering the activation energy.
  10. In chemistry when two or more elements or compounds combine to make a more complex substance .
  11. When one element replaces another in a compound or when two elements in different compounds trade places.
  12. of mass It means that during a chemical reaction matter is not created or destroyed.
  13. system In a closed system matter is not allowed to enter or leave
Down
  1. A coefficient is the number placed in front of a chemical formula in an equation.
  2. property A physical property is a characteristic of a substance that can be observed without changing the substance into another substance.
  3. reaction A change in matter that produces one or more substances is a chemical change or chemical change.
  4. Is the amount of a substance in a given volume
  5. When the reaction is complete you have new substances called the products
  6. reaction An endothermic reaction is a reaction in which energy is absorbed
  7. Is a rapid reaction between oxygen and a substance called a fuel.
  8. is anything that has mass and takes up space.
  9. change A physical change is any change that alters the form or appearance of a substance but does not make the substance into another substance.
  10. energy Is the minimum amount of energy needed to start a chemical reaction
  11. The study of matter and how matter changes is called chemistry
  12. A fuel is a material that releases energy when it burns
  13. property A chemical property is a characteristics of a substance that describes its ability to change into another substance

26 Clues: is anything that has mass and takes up space. • It breaks down compounds into simpler products • Is the amount of a substance in a given volume • The cells in our body containing biochemical catalysts • A fuel is a material that releases energy when it burns • The substance you have at the beginning are called reactants • ...

chem. vocab 2023-11-08

chem. vocab crossword puzzle
Across
  1. a chemical process in which substance reacts rapidly and gives off heat
  2. an ion that contains more than one atom
  3. a organic chemical compound that is composed exclusively of hydrogen and carbon atoms
  4. The simple form of a chemical reation
  5. in any given system that is closed to transfer matter in the system stays constant
  6. number's that come after a symbol and below
  7. a chemical reaction in which one reaction breaks down into two or more products
  8. a set of rules to generate systematical names for chemical comounds
  9. a process that occurs when two or more molecules interact to form a new product
  10. a reaction in which one element replaces a similar element in a compound
  11. the substance which participate in a chemical reaction
Down
  1. an expression that shows the elements in a compound and the relative proportions of those elements
  2. a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
  3. he processes by which chemicals interact to form new chemicals with different compositions
  4. a positive or negative charge on an atom
  5. a substance that is present at the end of a chemical reaction
  6. an equation for a chemical reaction in which the number of atoms for each element in the reation and the total charge are the same for both the reactants and the products
  7. the production of chemical compounds by reaction from simpler materials
  8. The number in front of the fromula
  9. reactants and products are seperated by an arrow symbol

20 Clues: The number in front of the fromula • The simple form of a chemical reation • an ion that contains more than one atom • a positive or negative charge on an atom • number's that come after a symbol and below • the substance which participate in a chemical reaction • reactants and products are seperated by an arrow symbol • ...

Chemical Changes in Matter 2022-03-21

Chemical Changes in Matter crossword puzzle
Across
  1. a number placed in front of a a chemical formula in an equation
  2. change any change that alters the form or appearance of a substance but that does not make the substance into another substance
  3. property a characteristic of a substance that can be observed without changing the substance into another substance
  4. the study of matter and how matter changes
  5. system matter can enter from or escape to the surroundings
  6. anything that has mass and takes up space
  7. when the reaction is complete, this is the new substances
  8. system matter is not allowed to enter or leave
  9. a material that increases the rate of a reaction by lowering the activation energy
  10. breaks down compounds into simpler products
  11. when two or more elements or compounds combine to make a more complex substance
  12. reaction a reaction in which energy is absorbed
  13. reaction a change in matter that produces one or more new substances
  14. a rapid reaction between oxygen and a substance called fuel
Down
  1. of mass during a chemical reaction, matter is not created or destroyed
  2. the amount of a substance in a given volume
  3. when one element replaces another in a compound or when two elements in different compounds trade places
  4. the substances you have at the beginning
  5. energy the minimum amount of energy needed to start a chemical reaction
  6. a solid that forms from solution during a chemical reaction
  7. the cells in your body that contain biological catalysts
  8. a material that releases energy when it burns
  9. a material used to decrease the rate of reaction
  10. reaction a reaction that releases energy in the form of heat
  11. equation a short, easy way to show a chemical reaction, using symbols instead of words
  12. property a characteristic of a substance that describes its ability to change into other substances

26 Clues: the substances you have at the beginning • anything that has mass and takes up space • the study of matter and how matter changes • the amount of a substance in a given volume • breaks down compounds into simpler products • a material that releases energy when it burns • system matter is not allowed to enter or leave • reaction a reaction in which energy is absorbed • ...

Unit 5 - Шалгалтын дүнгээ ахиулах даалгавар 2021-10-27

Unit 5 - Шалгалтын дүнгээ ахиулах даалгавар crossword puzzle
Across
  1. ___ stores energy in the form of chemical energy
  2. Exothermic reaction: heat is __
  3. Another term for burning
  4. Combustion is ___ reaction
  5. Example of endothermic reaction: ice __
  6. Endothermic reaction: heat is __
  7. Chemical reaction in which energy is taken in
  8. potassium+___->potassium hydroxide+hydrogen
  9. Chemical reaction in which a substance combines with oxygen
  10. During an endothermic reaction, the temperature ___.
Down
  1. Example of endothermic reaction: ice __
  2. During an exothermic reaction, the temperature ___.
  3. Chemical reaction in which heat energy is given out
  4. Exothermic: ___ than surroundings
  5. Given out energy during an exothermic reaction
  6. Endothermic: ___ than surroundings

16 Clues: Another term for burning • Combustion is ___ reaction • Exothermic reaction: heat is __ • Endothermic reaction: heat is __ • Exothermic: ___ than surroundings • Endothermic: ___ than surroundings • Example of endothermic reaction: ice __ • Example of endothermic reaction: ice __ • potassium+___->potassium hydroxide+hydrogen • Chemical reaction in which energy is taken in • ...

Chemical Reactions 2015-02-10

Chemical Reactions crossword puzzle
Across
  1. A change in which one or more substances combine or break apart to form new substances
  2. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
  3. A solid that forms from a solution during a chemical reaction
  4. A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  5. The amount of one material in a certain volume of another material
  6. A substance that undergoes change in a reaction
  7. A biological catalyst that lowers the activation energy of reactions in cells
  8. A reaction that releases energy in the form of heat
  9. A substance formed as a result of a chemical reaction
Down
  1. A material that decreases the rate of reaction
  2. A chemical reaction that breaks down compounds into simpler products
  3. A material that releases energy when it burns
  4. A material that increases the rate of reaction by lowering the activation energy
  5. A rapid reaction between oxygen and fuel that results in fire
  6. A system in which matter can enter from or escape to the surroundings
  7. A system in which no matter is allowed to enter or leave
  8. Anything that has mass and occupies space
  9. A reaction that absorbs energy in the form of heat
  10. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  11. The study of properties of matter and how matter changes
  12. A change in substance that does not change its identity

21 Clues: Anything that has mass and occupies space • A material that releases energy when it burns • A material that decreases the rate of reaction • A substance that undergoes change in a reaction • A reaction that absorbs energy in the form of heat • A reaction that releases energy in the form of heat • A substance formed as a result of a chemical reaction • ...

Chemical Changes in Matter 2022-03-21

Chemical Changes in Matter crossword puzzle
Across
  1. a number placed in front of a a chemical formula in an equation
  2. change any change that alters the form or appearance of a substance but that does not make the substance into another substance
  3. property a characteristic of a substance that can be observed without changing the substance into another substance
  4. the study of matter and how matter changes
  5. system matter can enter from or escape to the surroundings
  6. anything that has mass and takes up space
  7. when the reaction is complete, this is the new substances
  8. system matter is not allowed to enter or leave
  9. a material that increases the rate of a reaction by lowering the activation energy
  10. breaks down compounds into simpler products
  11. when two or more elements or compounds combine to make a more complex substance
  12. reaction a reaction in which energy is absorbed
  13. reaction a change in matter that produces one or more new substances
  14. a rapid reaction between oxygen and a substance called fuel
Down
  1. of mass during a chemical reaction, matter is not created or destroyed
  2. the amount of a substance in a given volume
  3. when one element replaces another in a compound or when two elements in different compounds trade places
  4. the substances you have at the beginning
  5. energy the minimum amount of energy needed to start a chemical reaction
  6. a solid that forms from solution during a chemical reaction
  7. the cells in your body that contain biological catalysts
  8. a material that releases energy when it burns
  9. a material used to decrease the rate of reaction
  10. reaction a reaction that releases energy in the form of heat
  11. equation a short, easy way to show a chemical reaction, using symbols instead of words
  12. property a characteristic of a substance that describes its ability to change into other substances

26 Clues: the substances you have at the beginning • anything that has mass and takes up space • the study of matter and how matter changes • the amount of a substance in a given volume • breaks down compounds into simpler products • a material that releases energy when it burns • system matter is not allowed to enter or leave • reaction a reaction in which energy is absorbed • ...

Chemical Formulas and Chemical Reactions 2017-02-05

Chemical Formulas and Chemical Reactions crossword puzzle
Across
  1. reaction a chemical reaction in which one substance breaks down into two or more substances
  2. a chemical reaction that absorbs energy primarily in the form of heat
  3. reaction a chemical reaction in which two or more substances combine to form another substance
  4. a reaction in which the energy released is in the form of heat
  5. reaction a chemical reaction in which the positive ion of one compound replaces the positive ion of another compound
  6. means "written below"
  7. the new chemicals presented after a reaction
Down
  1. the chemicals presented before a reaction
  2. reaction a chemical reaction in which one element replaces another element in a compound
  3. when water is the solvent for a reaction
  4. an insoluble compound that comes out of solution during a double-displacement reaction
  5. a number that represents the number of units of each chemical taking part in a reaction
  6. Reaction a change in which one or more substances are converted into new substances while energy is released or absorbed
  7. reaction a reaction that occurs when a substance reacts with oxygen to release energy in the form of heat and light
  8. Number the amount of valence electrons gained or lost between metals and nonmetals to become stable

15 Clues: means "written below" • when water is the solvent for a reaction • the chemicals presented before a reaction • the new chemicals presented after a reaction • a reaction in which the energy released is in the form of heat • a chemical reaction that absorbs energy primarily in the form of heat • ...

Crossword Puzzle 7A & 7B Key terms 2024-01-10

Crossword Puzzle 7A & 7B Key terms crossword puzzle
Across
  1. mass - The mass of one mole of a substance.
  2. equation - A combination of chemical formulas and symbols that models a chemical reaction.
  3. reaction - A chemical reaction in which a single reactant breaks down into two or more products.
  4. - A substance that is formed during a chemical reaction.
  5. - An exothermic chemical reaction in which a fuel reacts with oxygen.
  6. reaction - A chemical reaction in which one element in a compound is replaced by another element; also known as a single-displacement reaction.
  7. reaction - A chemical reaction in which two or more reactants combine into a single, more complex product.
Down
  1. - A number placed in front of a chemical formula within a chemical equation that shows how many units of a reactant or product are needed to balance the chemical equation.
  2. reaction - A process that rearranges the atoms in one or more substances into one or more new substances.
  3. - A substance that enters into a chemical reaction.
  4. reaction - A chemical reaction in which two compounds swap cations or anions with each other; also known as a double-displacement reaction.
  5. - A loss of electrons in a chemical reaction.
  6. - A gain of electrons in a chemical reaction.
  7. - Sl fundamental unit for the quantity of matter in a substance.

14 Clues: mass - The mass of one mole of a substance. • - A loss of electrons in a chemical reaction. • - A gain of electrons in a chemical reaction. • - A substance that enters into a chemical reaction. • - A substance that is formed during a chemical reaction. • - Sl fundamental unit for the quantity of matter in a substance. • ...

Chemistry is Life 2024-10-06

Chemistry is Life crossword puzzle
Across
  1. biological catalysts
  2. molecules composed of many monomers; makes up macromolecules
  3. compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is the major source of energy for the body
  4. reaction a reaction that absorbs energy (absorbs heat)
  5. reactant of an enzyme-catalyzed reaction
  6. a large organic molecule made up of many atoms (like proteins)
  7. energy energy that is needed to get a reaction started
  8. acid macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
  9. acid compound with an amino group on one end and a carboxyl group on the other end
  10. substance formed as a result of a chemical reaction
  11. substance that speeds up the rate of a chemical reaction
Down
  1. small chemical unit that makes up a polymer
  2. simple sugar molecule
  3. subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
  4. reaction a reaction that releases energy (gives off heat)
  5. reaction process that changes, or transforms, one set of chemicals into another set of chemicals
  6. macromolecule made up of amino acids
  7. a complex carbohydrate made up of many monosaccharides
  8. macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
  9. elements or compounds that enter into a chemical reaction

20 Clues: biological catalysts • simple sugar molecule • macromolecule made up of amino acids • reactant of an enzyme-catalyzed reaction • small chemical unit that makes up a polymer • substance formed as a result of a chemical reaction • reaction a reaction that absorbs energy (absorbs heat) • a complex carbohydrate made up of many monosaccharides • ...

Chemistry Vocabulary Crossword Puzzle 2020-11-11

Chemistry Vocabulary Crossword Puzzle crossword puzzle
Across
  1. chemical mass unit equal to Avogadro's number
  2. part of the atomic nucleus that has a charge of +1
  3. substance that does the dissolving in a chemical solution
  4. starting material for a chemical reaction
  5. a substance that cannot be subdivided and is identified by the number of protons in its atoms
  6. a chemical species that accepts protons
  7. substance that is dissolved in a chemical solution
  8. chemical bond between atoms caused by an electrostatic force in opposite charged ions
  9. chemical bond between atoms where electrons are more or less evenly shared
  10. substance formed as a result of a chemical reaction
Down
  1. a chemical reaction that releases heat
  2. a chemical reaction that absorbs heat
  3. outer electron that is most likely to participate in a bond formation or a chemical reaction
  4. part of the atomic nucleus that has a charge of 0
  5. homogenous mixture of two or more substances
  6. a chemical species that donates protons
  7. the number of protons in the nucleus of an atom of an element
  8. part of the atomic nucleus that has a charge of -1
  9. measure of hydrogen ion in a solution showing the acidity or basicity of a substance

19 Clues: a chemical reaction that absorbs heat • a chemical reaction that releases heat • a chemical species that accepts protons • a chemical species that donates protons • starting material for a chemical reaction • homogenous mixture of two or more substances • chemical mass unit equal to Avogadro's number • part of the atomic nucleus that has a charge of 0 • ...

Chemical Reactions 2016-06-21

Chemical Reactions crossword puzzle
Across
  1. The compound formed when iron reacts with oxygen
  2. The ________ properties of a metal determines how likely it is to corrode
  3. During a chemical reaction, atoms are never created or ___________
  4. A type of reaction that proceeds naturally, without energy being continuously added to it
  5. The term given to the corrosion of iron
  6. A type of reaction that continually requires energy to be added to it
  7. Reacting sodium chloride with silver nitrate will produce __________ _________ and sodium nitrate
  8. When the atoms in a chemical reaction rearrange to form a gas, __________ will be observed
  9. Atoms in substances are held together by chemical bonds that store ___________
  10. The name given to the process which causes atoms in reactants to rearrange into new products
Down
  1. Elements such as gold, platinum and mercury do not react with oxygen at all, and are referred to as noble metals
  2. A method of preventing corrosion, where the metal is coated with zinc metal
  3. The substances at the beginning of a chemical reaction
  4. The substances at the end of a chemical reaction
  5. HCl
  6. Burning methane with oxygen will produce _________ __________ and water
  7. When the atoms in a chemical reaction rearrange to form a solid, a _________ may be observed
  8. Chemical reactions where a metal reacts with oxygen to form a metal oxide
  9. Particles that make up matter
  10. A group of atoms chemically joined together

20 Clues: HCl • Particles that make up matter • The term given to the corrosion of iron • A group of atoms chemically joined together • The compound formed when iron reacts with oxygen • The substances at the end of a chemical reaction • The substances at the beginning of a chemical reaction • During a chemical reaction, atoms are never created or ___________ • ...

Chemistry Crossword 2013-11-17

Chemistry Crossword crossword puzzle
Across
  1. Reaction: Combustion or burning in the sequence of exothermic reaction.
  2. scale: Measures how acidic or basic a substance is using a scale from 0 to 14.
  3. reaction: A chemical reaction where a a base and am acid react to form a salt.
  4. A substance capable at reacting with an acid to form a salt or water, or of accepting neutralizing nydrogen ions.
  5. Substance: A substance that destroys and damages other substances that come into contact with it.
  6. A substance that takes part in and undergoes change in a reaction.
  7. A chemical compound used to change the rate of a reaction, but is regenerated at the end of a reaction.
Down
  1. Reaction: A chemical reaction accompanied by the absorption of heat.
  2. Law: Certain rules that pertain to the laws of nature and chemistry.
  3. Neutral molecules connected to the central atom.
  4. The mixing of air into a liquid or solid
  5. Substances that can't be dissolved.
  6. Reaction: A chemical reaction accompanied by the evolution of heat.
  7. of Reaction: What is made from a reaction.
  8. of Conservation of Mass: A Law where matter can not be created or destroyed.
  9. Indicators: An indicator that changes on going from acidic to basic solutions.
  10. A substance with particular chemical properties including turning litmus red, neutralising alkalis, and dissolving some metals.
  11. A substance that can be dissolved eg. Panadol Rapid in water

18 Clues: Substances that can't be dissolved. • The mixing of air into a liquid or solid • of Reaction: What is made from a reaction. • Neutral molecules connected to the central atom. • A substance that can be dissolved eg. Panadol Rapid in water • A substance that takes part in and undergoes change in a reaction. • ...

Chemical Properties and Changes 2021-10-20

Chemical Properties and Changes crossword puzzle
Across
  1. New substances have new ________ after a chemical change.
  2. The substance that form as a result of a chemical change.
  3. The amount of a substance in a given volume.
  4. Increasing this will cause substances to react more quickly.
  5. To decay due to the growth of bacteria or fungi.
  6. Rusting is an example.
  7. Chemicals can be represented using these groups of chemical symbols and subscripts.
Down
  1. The only sure sign that a chemical change occurred is when new ________ form.
  2. A chemical reaction involving a solid will occur more quickly if the surface area is ____________.
  3. Letters are to atoms as words are to _________.
  4. Mass is __________ during a chemical reaction.
  5. The reddish coating that results from a chemical reaction between iron, oxygen, and water.
  6. The difference in the types of properties is whether or not this changed while being observed.
  7. When fruit rots it emits an ________ which is a sign of a chemical change.
  8. A type of change in matter that results in a new substance with different properties.
  9. What fuel does as it undergoes a chemical change.
  10. Another name for a chemical change.
  11. The substances that react together in a chemical reaction.
  12. When this changes in leaves, it is a sign that a chemical change has happened.
  13. Chemical equations must be __________ to show equal numbers and types of atoms on both sides.

20 Clues: Rusting is an example. • Another name for a chemical change. • The amount of a substance in a given volume. • Mass is __________ during a chemical reaction. • Letters are to atoms as words are to _________. • To decay due to the growth of bacteria or fungi. • What fuel does as it undergoes a chemical change. • New substances have new ________ after a chemical change. • ...

Chemical Properties and Changes 2021-10-20

Chemical Properties and Changes crossword puzzle
Across
  1. Chemicals can be represented using these groups of chemical symbols and subscripts.
  2. The difference in the types of properties is whether or not this changed while being observed.
  3. New substances have new ________ after a chemical change.
  4. The only sure sign that a chemical change occurred is when new ________ form.
  5. Rusting is an example.
  6. Mass is __________ during a chemical reaction.
  7. When fruit rots it emits an ________ which is a sign of a chemical change.
  8. To decay due to the growth of bacteria or fungi.
  9. Chemical equations must be __________ to show equal numbers and types of atoms on both sides.
  10. A type of change in matter that results in a new substance with different properties.
  11. The substance that form as a result of a chemical change.
Down
  1. Increasing this will cause substances to react more quickly.
  2. Letters are to atoms as words are to _________.
  3. Another name for a chemical change.
  4. The reddish coating that results from a chemical reaction between iron, oxygen, and water.
  5. The amount of a substance in a given volume.
  6. What fuel does as it undergoes a chemical change.
  7. When this changes in leaves, it is a sign that a chemical change has happened.
  8. The substances that react together in a chemical reaction.
  9. A chemical reaction involving a solid will occur more quickly if the surface area is ____________.

20 Clues: Rusting is an example. • Another name for a chemical change. • The amount of a substance in a given volume. • Mass is __________ during a chemical reaction. • Letters are to atoms as words are to _________. • To decay due to the growth of bacteria or fungi. • What fuel does as it undergoes a chemical change. • New substances have new ________ after a chemical change. • ...

Chemical Reactions and Equations 2025-10-19

Chemical Reactions and Equations crossword puzzle
Across
  1. A representation of a reaction using symbols and formulas.(8,8)
  2. A reaction that releases heat to its surroundings.
  3. Substances present on the left-hand side of a chemical equation.
  4. The process where new substances are formed from old ones.
  5. Prefix meaning “one.”
  6. Compound of nitrogen and oxygen with the formula NO.(8,8)
  7. Slow reaction of a metal with oxygen or water, e.g., rusting.
  8. Reaction between acid and base forming salt and water.
Down
  1. The solid that forms in a precipitation reaction.
  2. Energy often released during an exothermic reaction.
  3. A product that may form and escape as bubbles in a reaction.
  4. Reaction with oxygen that releases heat and light energy.
  5. A reaction written out using the full names of substances.(4,8)
  6. The arrow (→) in a chemical equation means this.
  7. Reaction that produces an insoluble solid from two solutions.
  8. Reaction where a substance gains oxygen or loses electrons.
  9. A visible sign that a chemical reaction has occurred.(6,6)
  10. Substances formed on the right-hand side of a chemical equation.
  11. A reaction that absorbs heat from its surroundings.
  12. Two or more atoms joined together chemically.
  13. A substance made from two or more elements chemically combined.
  14. Energy sometimes given off when a substance burns.

22 Clues: Prefix meaning “one.” • Two or more atoms joined together chemically. • The arrow (→) in a chemical equation means this. • The solid that forms in a precipitation reaction. • A reaction that releases heat to its surroundings. • Energy sometimes given off when a substance burns. • A reaction that absorbs heat from its surroundings. • ...

Science Crosswords 2015-11-17

Science Crosswords crossword puzzle
Across
  1. description of a substance that can be pounded or rolled into sheets
  2. principle that matter is not created or destroyed in a chemical reaction
  3. chemical reaction that releases heat
  4. Vertical columns in the periodic table
  5. chemical reaction that absorbs energy
  6. element that has both metallic and non-metallic properties
  7. the smallest part of an element that is representative of that element
  8. property that describe the physical appearance of a substance
  9. Comes from the Arabic word "alkimiya", meaning "the chemist"
Down
  1. an experiment in which all reactants and all products of a chemical reaction are accounted for
  2. the temperature in which a solid will melt
  3. pure substance that cannot be broken down into other substances
  4. group 17 elements in the periodic table; most reactive non-metals
  5. change that results when two or more substances react to create a different substance
  6. measure of atomic mass
  7. an experiment in which one or more products of a chemical reaction can escape
  8. pure substance formed when non-metals combine
  9. atom that has become electrically charged because it has lost or gained electrons
  10. Anything that has mass and occupies space
  11. description of a solid that can be stretched into a long wire
  12. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  13. slow chemical change that occurs when oxygen in the air reacts with metal
  14. substance that reacts with other substances in a chemical reaction to create new substances with different properties
  15. new substance produced in a chemical reaction between reactants
  16. Horizontal row in the periodic table

25 Clues: measure of atomic mass • chemical reaction that releases heat • Horizontal row in the periodic table • chemical reaction that absorbs energy • Vertical columns in the periodic table • Anything that has mass and occupies space • the temperature in which a solid will melt • pure substance formed when non-metals combine • ...

Science Crosswords 2015-11-17

Science Crosswords crossword puzzle
Across
  1. pure substance that cannot be broken down into other substances
  2. an experiment in which one or more products of a chemical reaction can escape
  3. the smallest part of an element that is representative of that element
  4. principle that matter is not created or destroyed in a chemical reaction
  5. Vertical columns in the periodic table
  6. change that results when two or more substances react to create a different substance
  7. property that describe the physical appearance of a substance
  8. group 17 elements in the periodic table; most reactive non-metals
  9. element that has both metallic and non-metallic properties
  10. measure of atomic mass
  11. description of a solid that can be stretched into a long wire
Down
  1. an experiment in which all reactants and all products of a chemical reaction are accounted for
  2. the temperature in which a solid will melt
  3. chemical reaction that absorbs energy
  4. new substance produced in a chemical reaction between reactants
  5. pure substance formed when non-metals combine
  6. Comes from the Arabic word "alkimiya", meaning "the chemist"
  7. chemical reaction that releases heat
  8. slow chemical change that occurs when oxygen in the air reacts with metal
  9. description of a substance that can be pounded or rolled into sheets
  10. atom that has become electrically charged because it has lost or gained electrons
  11. Horizontal row in the periodic table
  12. substance that reacts with other substances in a chemical reaction to create new substances with different properties
  13. Anything that has mass and occupies space
  14. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy

25 Clues: measure of atomic mass • chemical reaction that releases heat • Horizontal row in the periodic table • chemical reaction that absorbs energy • Vertical columns in the periodic table • Anything that has mass and occupies space • the temperature in which a solid will melt • pure substance formed when non-metals combine • ...

Chemical Formulas and Chemical Reactions 2017-02-05

Chemical Formulas and Chemical Reactions crossword puzzle
Across
  1. a chemical reaction that absorbs energy primarily in the form of heat
  2. the new chemicals presented after a reaction
  3. reaction a chemical reaction in which the positive ion of one compound replaces the positive ion of another compound
  4. when water is the solvent for a reaction
  5. reaction a chemical reaction in which one substance breaks down into two or more substances
  6. a number that represents the number of units of each chemical taking part in a reaction
  7. reaction a chemical reaction in which two or more substances combine to form another substance
Down
  1. the chemicals presented before a reaction
  2. reaction a reaction that occurs when a substance reacts with oxygen to release energy in the form of heat and light
  3. an insoluble compound that comes out of solution during a double-displacement reaction
  4. means "written below"
  5. reaction a chemical reaction in which one element replaces another element in a compound
  6. Number the amount of valence electrons gained or lost between metals and nonmetals to become stable
  7. Reaction a change in which one or more substances are converted into new substances while energy is released or absorbed
  8. a reaction in which the energy released is in the form of heat

15 Clues: means "written below" • when water is the solvent for a reaction • the chemicals presented before a reaction • the new chemicals presented after a reaction • a reaction in which the energy released is in the form of heat • a chemical reaction that absorbs energy primarily in the form of heat • ...

Chemical Reactions 2016-06-21

Chemical Reactions crossword puzzle
Across
  1. A group of atoms chemically joined together
  2. The compound formed when iron reacts with oxygen
  3. A method of preventing corrosion, where the metal is coated with zinc metal
  4. Chemical reactions where a metal reacts with oxygen to form a metal oxide
  5. HCl
  6. A type of reaction that proceeds naturally, without energy being continuously added to it
  7. Reacting sodium chloride with silver nitrate will produce __________ _________ and sodium nitrate
  8. Elements such as gold, platinum and mercury do not react with oxygen at all, and are referred to as noble metals
  9. The substances at the beginning of a chemical reaction
  10. When the atoms in a chemical reaction rearrange to form a gas, __________ will be observed
Down
  1. Burning methane with oxygen will produce _________ __________ and water
  2. The term given to the corrosion of iron
  3. When the atoms in a chemical reaction rearrange to form a solid, a _________ may be observed
  4. The name given to the process which causes atoms in reactants to rearrange into new products
  5. A type of reaction that continually requires energy to be added to it
  6. Particles that make up matter
  7. The ________ properties of a metal determines how likely it is to corrode
  8. The substances at the end of a chemical reaction
  9. During a chemical reaction, atoms are never created or ___________
  10. Atoms in substances are held together by chemical bonds that store ___________

20 Clues: HCl • Particles that make up matter • The term given to the corrosion of iron • A group of atoms chemically joined together • The compound formed when iron reacts with oxygen • The substances at the end of a chemical reaction • The substances at the beginning of a chemical reaction • During a chemical reaction, atoms are never created or ___________ • ...

Chemical Reactions 2016-06-21

Chemical Reactions crossword puzzle
Across
  1. A group of atoms chemically joined together
  2. The compound formed when iron reacts with oxygen
  3. Reacting sodium chloride with silver nitrate will produce __________ _________ and sodium nitrate
  4. Particles that make up matter
  5. The term given to the corrosion of iron
  6. A type of reaction that continually requires energy to be added to it
  7. Atoms in substances are held together by chemical bonds that store ___________
  8. The name given to the process which causes atoms in reactants to rearrange into new products
  9. The ________ properties of a metal determines how likely it is to corrode
  10. During a chemical reaction, atoms are never created or ___________
  11. The substances at the end of a chemical reaction
Down
  1. When the atoms in a chemical reaction rearrange to form a gas, __________ will be observed
  2. A method of preventing corrosion, where the metal is coated with zinc metal
  3. HCl
  4. When the atoms in a chemical reaction rearrange to form a solid, a _________ may be observed
  5. Elements such as gold, platinum and mercury do not react with oxygen at all, and are referred to as noble metals
  6. A type of reaction that proceeds naturally, without energy being continuously added to it
  7. Burning methane with oxygen will produce _________ __________ and water
  8. Chemical reactions where a metal reacts with oxygen to form a metal oxide
  9. The substances at the beginning of a chemical reaction

20 Clues: HCl • Particles that make up matter • The term given to the corrosion of iron • A group of atoms chemically joined together • The compound formed when iron reacts with oxygen • The substances at the end of a chemical reaction • The substances at the beginning of a chemical reaction • During a chemical reaction, atoms are never created or ___________ • ...

types of reactions 2024-04-30

types of reactions crossword puzzle
Across
  1. The opposite of combination, where a single compound breaks down into two or more simpler substances.
  2. Also known as displacement, this reaction involves an element displacing another from a compound.
  3. A substance that undergoes change in a chemical reaction.
  4. A reaction in which one element replaces another in a compound, usually a metal displacing another metal from a compound.
  5. A reaction that absorbs energy from its surroundings, usually in the form of heat.
  6. Displacement A reaction in which two compounds exchange ions to form two new compounds.
Down
  1. A type of chemical reaction where two or more substances combine to form a single new substance.
  2. The speed at which a chemical reaction takes place.
  3. Another term for combination reaction.
  4. A substance that speeds up a chemical reaction without being consumed in the process.
  5. A reaction that releases energy in the form of heat.
  6. A symbolic representation of a chemical reaction, showing the reactants and products involved
  7. A type of double displacement reaction where one of the products is insoluble and forms a solid.
  8. The process of substances undergoing chemical change to form new substances.
  9. A substance that is formed as a result of a chemical reaction.
  10. this type of reaction involves the transfer of electrons between reactants

16 Clues: Another term for combination reaction. • The speed at which a chemical reaction takes place. • A reaction that releases energy in the form of heat. • A substance that undergoes change in a chemical reaction. • A substance that is formed as a result of a chemical reaction. • this type of reaction involves the transfer of electrons between reactants • ...

Physical and Chemical Change Puzzle 2024-06-26

Physical and Chemical Change Puzzle crossword puzzle
Across
  1. The mass per unit volume of a substance.
  2. The process by which a liquid changes into a gas.
  3. A pure substance consisting of only one type of atom.
  4. The distinct forms that different phases of matter take on, namely solid, liquid, and gas.
  5. The ability of a substance to dissolve in another substance, typically a liquid.
  6. A change that can be undone, returning the substance to its original state.
  7. A solid that forms and settles out of a liquid mixture during a chemical reaction.
  8. A characteristic of a substance that is observed during a chemical reaction (e.g., reactivity with acid, flammability).
  9. A substance formed when two or more chemical elements are chemically bonded together.
  10. A substance that takes part in and undergoes change during a reaction.
  11. A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Down
  1. The amount of space that a substance or object occupies.
  2. A combination of two or more substances where each retains its own properties and can be separated by physical means.
  3. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  4. A chemical reaction that absorbs energy from its surroundings.
  5. Anything that has mass and takes up space.
  6. The process by which a solid changes directly into a gas without first becoming a liquid.
  7. A measure of the average kinetic energy of the particles in a substance.
  8. A change in which no new substances are formed and which can often be reversed (e.g., changes in state, shape, or size).
  9. A chemical reaction that releases energy to its surroundings.
  10. The smallest unit of a chemical element that retains its chemical properties.

21 Clues: The mass per unit volume of a substance. • Anything that has mass and takes up space. • The process by which a liquid changes into a gas. • A pure substance consisting of only one type of atom. • The amount of space that a substance or object occupies. • A chemical reaction that releases energy to its surroundings. • ...

Chemical Reactions 2013-01-17

Chemical Reactions crossword puzzle
Across
  1. In a chemical equation a (g) means
  2. A reaction that gives off heat
  3. An indicator that chemical reaction has taken place (clear + clear = purple)
  4. 1 _____ of any substance has 6.022x10^23
  5. AB + CD --> AD + CB
  6. A + O2 --> AO + H2O
  7. AB --> A + B
  8. A solid that forms out of solution
  9. the type of bond that exists between two nonmentals
  10. Whole number used to balance a chemical equation
  11. A reaction that absorbs heat
  12. In a chemical equation an (s) means
Down
  1. the name given to the number 6.022x10^23
  2. replacement A + BC --> B + AC
  3. Substances present at the initiation of a chemical reaction
  4. A + B --> AB
  5. In a chemical equation an (l) means
  6. stands for aqueous ( which means dissolved in water)
  7. A reaction in which a single element replaces another in a compound
  8. the unit for heat
  9. the type of bond that exists between cations and anions
  10. If a chemical equation has the same number of atoms on the left side and right, the equation is said to be ______
  11. The Right side of a chemical equation

23 Clues: A + B --> AB • AB --> A + B • the unit for heat • A + O2 --> AO + H2O • AB + CD --> AD + CB • A reaction that absorbs heat • A reaction that gives off heat • replacement A + BC --> B + AC • In a chemical equation a (g) means • A solid that forms out of solution • In a chemical equation an (l) means • In a chemical equation an (s) means • The Right side of a chemical equation • ...

Eden Blankenship's Crossword 2024-05-15

Eden Blankenship's Crossword crossword puzzle
Across
  1. pure substance that cannot be broken down
  2. transfer of thermal energy
  3. matter changing that doesn't affect chemical compound
  4. a measure of the average kinetic energy
  5. the amount of space an object occupies
  6. molecules of same substances sticking together
  7. the substances formed during a chemical reaction
  8. forces that hold atoms together
  9. material that has mass and takes up some amount of space
  10. a process that changes substances to a new substance
Down
  1. a substance that increases rate of a chemical reaction
  2. a chemical reaction that absorbs heat
  3. a chemical combination of two or more elements
  4. the amount of matter in an object
  5. the smallest unit of matter(makes up matter)
  6. substances present before a chemical reaction
  7. chemical reaction that gives off heat
  8. a combination of substances that can be separated

18 Clues: transfer of thermal energy • forces that hold atoms together • the amount of matter in an object • a chemical reaction that absorbs heat • chemical reaction that gives off heat • the amount of space an object occupies • a measure of the average kinetic energy • pure substance that cannot be broken down • the smallest unit of matter(makes up matter) • ...

Chapter 6 Vocab 2024-03-07

Chapter 6 Vocab crossword puzzle
Across
  1. energy in a system that is compatible of preforming work.
  2. energy associated with motion.
  3. Organic catalyst
  4. Series of linked reactions.
  5. Nucleotide with three phosphate groups.
  6. measure of randomness or disorder in a system
  7. Region of an enzyme where a subtrate blinds
  8. Nucleotide with two phosphate groups that can accept another phosphate group.
  9. stored energy in a potentially usable form.
  10. Means by which cells regulate enzyme activity.
  11. Substance that forms in a result of a reaction.
  12. Chemical reaction that releases energy
  13. energy that must be added
Down
  1. A paired set of chemical reaction where on molecule gives up.
  2. capacity to do work and bring about a change.
  3. Chemical reaction in which smaller molecules are combined to form smaller molecules.
  4. RNA molecules
  5. Substance that participates in a reaction
  6. Nonprotein organic molecule
  7. Organic nutrients
  8. Reaction that occurs simultaniously.
  9. Nonprotien assistant
  10. Two laws explaining energy and its relationships and changes.
  11. Change in shape of an enzyme
  12. Chemical reaction that requires and input of energy.
  13. Metabolic process that breaks down large molecules into smaller ones.
  14. The sum of chemical reactions that occur in a cell.

27 Clues: RNA molecules • Organic catalyst • Organic nutrients • Nonprotien assistant • energy that must be added • Nonprotein organic molecule • Series of linked reactions. • Change in shape of an enzyme • energy associated with motion. • Reaction that occurs simultaniously. • Chemical reaction that releases energy • Nucleotide with three phosphate groups. • ...

Chapter Key Terms 2022-03-18

Chapter Key Terms crossword puzzle
Across
  1. Any change that alters the form or appearance of a substance but does not make that substance into another substance
  2. A reaction that releases energy in the form of heat
  3. A solid that forms from a solution during a chemical reaction
  4. The substances you have at the beginning
  5. A biological catalyst that lowers the activation energy an electron has
  6. A characteristic that describes its ability to change into other substances
  7. The amount of one material ina certain volume of another material
  8. A rapid reaction between oxygen and fuel that results in fire
  9. A change in matter that produces one or more new substances
  10. A system in which no matter is allowed to enter or leave
  11. A characteristic of substances that can be observed without changing the substance into another substance
  12. Anything that has mass and takes up space
  13. A chemical reaction that breaks down compounds into simpler products
  14. A material that releases energy when burned
Down
  1. A reaction which energy is absorbed
  2. A substance formed as a result of a chemical reaction
  3. The minimum amount of energy needed to get a chemical reaction started
  4. A chemical reaction in which two or more simpler substances combine to form a new, more complex substance
  5. The principle stating that matter is not created or destroyed during a chemical reaction
  6. A short, easy way to show a chemical reaction, using symbols instead of words
  7. A material that increases the rate of a reaction by lowering the activation energy
  8. The study of matter and how matter changes
  9. A material that decreases the rate of a reaction
  10. A number in front of a chemical formula in an equation that indicates how may molecules or atoms of each reactant and product are involved in a reaction
  11. A reaction in which one element replaces another in a compound or when two elements in different compounds trade place
  12. A system in which matter can enter or escape to the surroundings

26 Clues: A reaction which energy is absorbed • The substances you have at the beginning • Anything that has mass and takes up space • The study of matter and how matter changes • A material that releases energy when burned • A material that decreases the rate of a reaction • A reaction that releases energy in the form of heat • ...

Unit 2 Biochemistry Vocab 2025-12-17

Unit 2 Biochemistry Vocab crossword puzzle
Across
  1. a substance that decreases the activation energy needed to start a chemical reaction, therefore increases the rate of the chemical reaction
  2. a large molecule made of many monomers bonded together
  3. nonpolar molecules that include fats, oils, wax, and cholesterol
  4. changes substances into different substances by breaking and forming bonds
  5. substances changed during a chemical reaction
  6. measurement of acidity
  7. attraction among molecules of a substance
  8. a subunit in a complete molecule
  9. reaction absorbs more energy than it releases
  10. molecules composed of C, H, and O, energy source (sugar & starches)
  11. the amount of energy that needs to be absorbed for a chemical reaction to start
  12. chemical reaction releases more energy than it absorbs
Down
  1. attraction between a slightly positive hydrogen atom and a slightly negative atom
  2. polymers that are made up of monomers called nucleotides
  3. molecules that contain C, H, O, N, and sometimes S (sulfur), make up proteins
  4. a mixture of substances that is the same throughout
  5. substances made by a chemical reaction
  6. the specific reactants that an enzyme acts on
  7. a polymer made of monomers called amino acids
  8. attraction among molecules of different substances
  9. are catalysts for chemical reactions in living things
  10. has slight positive region and slight negative region

22 Clues: measurement of acidity • a subunit in a complete molecule • substances made by a chemical reaction • attraction among molecules of a substance • substances changed during a chemical reaction • a polymer made of monomers called amino acids • reaction absorbs more energy than it releases • the specific reactants that an enzyme acts on • ...

Chemical Reactions 2016-06-21

Chemical Reactions crossword puzzle
Across
  1. During a chemical reaction, atoms are never created or ___________
  2. The compound formed when iron reacts with oxygen
  3. The name given to the process which causes atoms in reactants to rearrange into new products
  4. A type of reaction that proceeds naturally, without energy being continuously added to it
  5. The term given to the corrosion of iron
  6. Elements such as gold, platinum and mercury do not react with oxygen at all, and are referred to as noble metals
  7. Reacting sodium chloride with silver nitrate will produce __________ _________ and sodium nitrate
  8. Burning methane with oxygen will produce _________ __________ and water
  9. A group of atoms chemically joined together
Down
  1. When the atoms in a chemical reaction rearrange to form a gas, __________ will be observed
  2. Chemical reactions where a metal reacts with oxygen to form a metal oxide
  3. HCl
  4. The substances at the end of a chemical reaction
  5. The substances at the beginning of a chemical reaction
  6. The ________ properties of a metal determines how likely it is to corrode
  7. A type of reaction that continually requires energy to be added to it
  8. Particles that make up matter
  9. When the atoms in a chemical reaction rearrange to form a solid, a _________ may be observed
  10. A method of preventing corrosion, where the metal is coated with zinc metal
  11. Atoms in substances are held together by chemical bonds that store ___________

20 Clues: HCl • Particles that make up matter • The term given to the corrosion of iron • A group of atoms chemically joined together • The substances at the end of a chemical reaction • The compound formed when iron reacts with oxygen • The substances at the beginning of a chemical reaction • During a chemical reaction, atoms are never created or ___________ • ...

Chemical Reactions 2016-06-21

Chemical Reactions crossword puzzle
Across
  1. Chemical reactions where a metal reacts with oxygen to form a metal oxide
  2. A method of preventing corrosion, where the metal is coated with zinc metal
  3. The name given to the process which causes atoms in reactants to rearrange into new products
  4. A type of reaction that continually requires energy to be added to it
  5. Reacting sodium chloride with silver nitrate will produce __________ _________ and sodium nitrate
  6. Burning methane with oxygen will produce _________ __________ and water
  7. During a chemical reaction, atoms are never created or ___________
  8. When the atoms in a chemical reaction rearrange to form a gas, __________ will be observed
Down
  1. The compound formed when iron reacts with oxygen
  2. When the atoms in a chemical reaction rearrange to form a solid, a _________ may be observed
  3. HCl
  4. A type of reaction that proceeds naturally, without energy being continuously added to it
  5. A group of atoms chemically joined together
  6. Particles that make up matter
  7. The substances at the beginning of a chemical reaction
  8. The ________ properties of a metal determines how likely it is to corrode
  9. Elements such as gold, platinum and mercury do not react with oxygen at all, and are referred to as noble metals
  10. The substances at the end of a chemical reaction
  11. The term given to the corrosion of iron
  12. Atoms in substances are held together by chemical bonds that store ___________

20 Clues: HCl • Particles that make up matter • The term given to the corrosion of iron • A group of atoms chemically joined together • The compound formed when iron reacts with oxygen • The substances at the end of a chemical reaction • The substances at the beginning of a chemical reaction • During a chemical reaction, atoms are never created or ___________ • ...