chemical reaction Crossword Puzzles

Vocab unit 4 by Liberty Ramos 2017-02-08

Vocab unit 4 by Liberty Ramos crossword puzzle
Across
  1. Of an object is its speed combined with the direction.
  2. Are the substances formed in a reaction.
  3. SPEED~ Another description of a object's motion it.
  4. OF CONSERVATION OF MASS~ States that matter is neither created nor destroyed in the ordinary physical and chemical change.
  5. REACTION~ Is the process in which atoms are rearranged to produce new substances.
  6. Are the substances that participate in a chemical reaction.
  7. POINT~ Is a place or object to which another location is compared.
  8. Is an object's change in position relative to a reference point.
  9. Is the measure of how quickly distance changes with time.
Down
  1. REACTION~ A chemical reaction that requires an input of energy.
  2. Is the straight-line distance between a starting point.
  3. Is a measure of how quickly velocity changes.
  4. REACTION~ A chemical reaction i which energy is released to the surroundings.
  5. SPEED~ Of a moving object is total total distance traveled divided by the total of travel.
  6. Is the location of a object.
  7. Quantity is a physical quantity that has both size and direction.

16 Clues: Is the location of a object. • Are the substances formed in a reaction. • Is a measure of how quickly velocity changes. • SPEED~ Another description of a object's motion it. • Of an object is its speed combined with the direction. • Is the straight-line distance between a starting point. • Is the measure of how quickly distance changes with time. • ...

Fun with Chemistry 2022-05-03

Fun with Chemistry crossword puzzle
Across
  1. type of replacement reaction where 2 ions switch places between compounds
  2. unit of measurement for large quantities of small items
  3. reaction where one element replaces another in a compound
  4. reaction involving oxygen that produces energy
  5. another name for an acid-base reaction
  6. substances formed in chemical reactions
  7. numbers used to balance chemical equations
  8. Italian scientist who worked with molecular theory
  9. what the arrow in a chemical equation means
  10. 2 reactants form 1 product
Down
  1. reaction where one element loses electrons and another gains electrons
  2. solid compound that forms when 2 or more aqueous substances react
  3. one reactant breaks down into 2 or more products
  4. numbers after element symbol indicating number of atoms
  5. math for chemistry
  6. quantity of matter in grams
  7. comparison of coefficients
  8. mixed with water
  9. substances that will form products

19 Clues: mixed with water • math for chemistry • comparison of coefficients • 2 reactants form 1 product • quantity of matter in grams • substances that will form products • another name for an acid-base reaction • substances formed in chemical reactions • numbers used to balance chemical equations • what the arrow in a chemical equation means • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

Unit B-Chemistry Crossword 2015-11-19

Unit B-Chemistry Crossword crossword puzzle
Across
  1. positively charged particle in the nucleus of an atom
  2. substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  3. a chemical combination of two or more elements
  4. an experiment in which one or more products of chemical reaction can escape
  5. substance that helps a chemical reaction to be faster
  6. a table in which the elements are organized by their physical and chemical properties
  7. group 1 elements in the periodic table
  8. chemical reaction that absorbs energy
  9. the most reactive non-metal
  10. substance made of only one kind of matter
  11. neutral particle in the nucleus of an atom
  12. a cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  13. compound that dissolves in water to form a soluion
Down
  1. mass of one atom of an element calculated from the number of protons, neutrons and electrons
  2. element that has both metallic and non-metallic properties
  3. pure substance formed when non-metals combine
  4. slow chemical change that occurs when oxygen in the air reacts with metal
  5. catalyst involved in chemical reactions in living things
  6. a system easy to see warning symbols on hazardous materials
  7. change of state from gas to solid
  8. chemical reaction that releases energy
  9. mass of a substance that can dissolve in a given amount of solvent to form a saturated solution at a given temperature
  10. the most stable and unreactive elements
  11. horizontal row of elements in the periodic table
  12. atom that has become electrically charged because it has lost or gained electrons

25 Clues: the most reactive non-metal • change of state from gas to solid • chemical reaction that absorbs energy • group 1 elements in the periodic table • chemical reaction that releases energy • the most stable and unreactive elements • substance made of only one kind of matter • neutral particle in the nucleus of an atom • pure substance formed when non-metals combine • ...

Biomolecules 2024-04-26

Biomolecules crossword puzzle
Across
  1. a substance that changes in a chemical reaction
  2. a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits
  3. any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
  4. the building blocks of the fat in our bodies and in the food we eat
  5. sugar molecules
  6. the chemical breakdown of a compound due to reaction with water
  7. large biomolecules that play essential roles in all cells and viruses
  8. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  9. end substances after a biological process has occurred
Down
  1. proteins that help speed up metabolism, or the chemical reactions in our bodies
  2. a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers
  3. adenine, guanine, cytosine, and thymine
  4. a chemical compound found in living organisms
  5. molecules used by all living things to make proteins
  6. made up of chemical 'building blocks' called amino acids
  7. nonmetallic chemical element in Group 14 of the periodic table.
  8. a sugar derived from ribose by replacing a hydroxyl group with hydrogen.
  9. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  10. a region on an enzyme that binds to a protein or other substance during a reaction.
  11. the surface or material on or from which an organism lives, grows, or obtains its nourishment

20 Clues: sugar molecules • adenine, guanine, cytosine, and thymine • a chemical compound found in living organisms • a substance that changes in a chemical reaction • molecules used by all living things to make proteins • end substances after a biological process has occurred • made up of chemical 'building blocks' called amino acids • ...

Cycle 2 Exam Review 2021-11-16

Cycle 2 Exam Review crossword puzzle
Across
  1. The process of a substance undergoing a chemical change
  2. A way to write compounds so we can see how many of each type of atom are present
  3. A positively charged subatomic particle located in the nucleus of an atom
  4. The mass of an atom, which is equal to the total number of protons and neutrons
  5. A chemical bond between a metal and a non-metal in which one atom “gives” an electron and the other “takes” an electron
  6. A negatively-charged subatomic particle located outside of the nucleus
  7. A chemical reaction in which 2 substances combine to produce 1 new substance
  8. A charged atom with an unequal number of protons and electrons
  9. A row on the periodic table
  10. A pure substance composed of the same type of atom throughout
  11. Electrons in the outermost energy level
  12. A column on the periodic table
  13. A chemical bond between nonmetals in which electrons are shared
Down
  1. The area surrounding the nucleus of an atom
  2. The starting substances before the chemical reaction takes place
  3. The substances that exist after a chemical reaction takes place
  4. Smallest unit of matter, consists of a nucleus and electron cloud
  5. A written way to express a chemical reaction
  6. A substance made of 2 or more elements bonded together
  7. The number of protons in one atom
  8. A chemical reaction in which a substance is broken down into 2 or more new substances
  9. The positively charged region in the center of an atom
  10. A neutrally charged subatomic particle located in the nucleus of an atom

23 Clues: A row on the periodic table • A column on the periodic table • The number of protons in one atom • Electrons in the outermost energy level • The area surrounding the nucleus of an atom • A written way to express a chemical reaction • A substance made of 2 or more elements bonded together • The positively charged region in the center of an atom • ...

ch. 7 vocab 2024-01-02

ch. 7 vocab crossword puzzle
Across
  1. can be represented by A + B → AB
  2. any chemical reaction that absorbs heat from its environment
  3. chemical reaction that involves a transfer of electrons between two species
  4. substance that is formed due to chemical reaction
Down
  1. symbolic representation of chemical reactions
  2. chemical reaction between substances, usually including oxygen
  3. substance that is altered during chemical reactions
  4. one element is replaced by another in a compound
  5. when a binary compound decomposes into its elements
  6. 6.02214076 × 1023 of some chemical unit
  7. stored in the bonds of chemical compounds
  8. releases energy by light or heat
  9. a multiplier or factor that measures some property
  10. positive and negative ions of two ionic compounds exchange places to form two new compounds
  11. the ratio between the mass and the amount of substance (measured in moles) of any sample

15 Clues: can be represented by A + B → AB • releases energy by light or heat • 6.02214076 × 1023 of some chemical unit • stored in the bonds of chemical compounds • symbolic representation of chemical reactions • one element is replaced by another in a compound • substance that is formed due to chemical reaction • a multiplier or factor that measures some property • ...

Science Key words 2015-12-05

Science Key words crossword puzzle
Across
  1. electricity that flows continuously
  2. description of a substance that can be pounded or rolled into sheets
  3. an experiment in which one or more products of a chemical reaction can escape
  4. ability of a substance to conduct electricity or heat
  5. a group of 17 elements on the periodic table
  6. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  7. element that has both metallic and non-metallic properties
  8. slow chemical change that occurs when oxygen in the air reacts with a metal
  9. chemical combination of two or more elements in a specific ratio
  10. change of state from a gas to a solid
  11. new materials created by a reaction
Down
  1. substance that helps a chemical reaction to proceed more quickly
  2. a table in which the elements are organized by their physical and chemical properties
  3. change in appearance or state of a substance
  4. group 18 elements in the periodic table
  5. when two or more substances react to create a new substance
  6. invisible negatively charged particle
  7. amount of mass in a given volume of a substance
  8. the smallest part of an element
  9. an experiment in which all reactants and all products of a chemical reaction are accounted for
  10. a substance that resists the flow of energy
  11. a material that electric charge can move through easily
  12. positive particle in the nucleus of an atom
  13. new substance produced in a chemical reaction between reactants
  14. neutral particle in the nucleus of an atom
  15. positively charged centre of an atom

26 Clues: the smallest part of an element • electricity that flows continuously • new materials created by a reaction • positively charged centre of an atom • invisible negatively charged particle • change of state from a gas to a solid • group 18 elements in the periodic table • neutral particle in the nucleus of an atom • a substance that resists the flow of energy • ...

Ch. 4 Compounds, Elements, and Mixtures 2019-10-14

Ch. 4 Compounds, Elements, and Mixtures crossword puzzle
Across
  1. The substance that is dissolved.
  2. Two or more elements chemically combined.
  3. Homogeneous mixtures that have particles mixed together but are not dissolved.
  4. First letter of a chemical symbol is always _________.
  5. During a chemical reaction, atoms cannot be created or _________.
  6. Type of homogeneous mixture formed when one substance dissolves in another.
  7. Atoms of different elements are _________.
  8. The substances that make up a mixture can be present in any ___________.
  9. Shorthand way of representing the elements.
  10. Universal solvent
  11. Simplest pure substance.
  12. Mixtures that are "well mixed".
  13. Shortand way of representing compounds.
  14. Mixtures that are "lease mixed".
  15. Metal solution
Down
  1. A substance that dissolved in another substances is said to be ____________.
  2. Each substance that make up a mixture has its own specific ______________ and is the same throughout.
  3. The reactants and products must have the same ________ of atoms.
  4. Substances mixed together but not chemically combined.
  5. To balance a chemical reaction, you must add ___________ in from of the chemical formulas.
  6. What results from the reaction in a chemical equation.
  7. The amount of solute that can be completely dissolved in a given amount of solvent at a specific temperature.
  8. Shorthand way of representing a chemical reaction.
  9. Classifying matter according to ________ often groups very different substances together.
  10. The substance doing the dissolving.
  11. Atoms of the same element are ________.
  12. Substances in a mixture may change in _____________ appearance.
  13. What is being put into a reaction in a chemical equation.

28 Clues: Metal solution • Universal solvent • Simplest pure substance. • Mixtures that are "well mixed". • The substance that is dissolved. • Mixtures that are "lease mixed". • The substance doing the dissolving. • Atoms of the same element are ________. • Shortand way of representing compounds. • Two or more elements chemically combined. • Atoms of different elements are _________. • ...

Stoichiometry Review 2024-04-01

Stoichiometry Review crossword puzzle
Across
  1. unit of measurement that has 6.022 x 10^23 atoms.
  2. Numbers written to the right and slightly below an element's symbol in a chemical formula, indicating the number of atoms in a molecule.
  3. Numbers used to balance a chemical equation, representing the relative amounts of reactants and products.
  4. Process where reactants undergo chemical change to form products.
  5. Ratio the masses of any two substances involved in a chemical reaction.
  6. The number of atoms, molecules, or entities in one mole of a substance.
  7. The branch of chemistry that studies calculations of quantities of chemical reactions
Down
  1. Equation that the product and reactant sides have equal amounts of atoms.
  2. Reactant that can do more product than the limiting one, therefore will have left overs after reaction.
  3. The substances that come out of the reactants.
  4. Reactant that reactant that determines the amount of product formed in a chemical reaction.
  5. The substances that change to create the products
  6. Molar mass is the mass of one mole of a substance.
  7. Symbolic representation of a chemical reaction showing reactants and products and their respective quantities.
  8. Ratio of the amounts in moles of any two substances involved in a chemical reaction.

15 Clues: The substances that come out of the reactants. • unit of measurement that has 6.022 x 10^23 atoms. • The substances that change to create the products • Molar mass is the mass of one mole of a substance. • Process where reactants undergo chemical change to form products. • Ratio the masses of any two substances involved in a chemical reaction. • ...

chemistry crossword 2015-11-17

chemistry crossword crossword puzzle
Across
  1. They are used to describe matter, like colour or conductivity
  2. Substance that reacts with another substance in a chemical reaction to create new substances with different propeties
  3. A table in which elements are organized by their physical and chemical properties
  4. Number of protons in the nucleus of one atom of an element
  5. States that mass cannot be created or destroyed
  6. Chemical reaction that absorbs energy
  7. Pure substance formed when at least one metal and one non-metal combine
  8. A positively charged particle
  9. Slow chemical change that occurs when oxygen in the air reacts with a metal
  10. Occurs when a material changes from one state o another
  11. Matter which has a specific composition and specific properties / every pure element
  12. Horizontal row of elements in the periodic table
Down
  1. Chemical reaction that releases energy
  2. Vertical column of elements in the periodic table
  3. Pure substance formed when non-metals combine
  4. New substance produced in a chemical reaction between reactants
  5. Mass of one atom of an element
  6. Pure substance that cannot be broken down into other substances
  7. Anything that has mass and takes up space
  8. The most reactive non-metals
  9. Occurs when two or more materials react and create new materials
  10. Elements that have both metallic and non-metallic properties
  11. A system of easy-to-use warning symbols on hazardous materials
  12. Chemical reaction that occurs when oxygen reacts with a substance to form a new energy and give off energy

24 Clues: The most reactive non-metals • A positively charged particle • Mass of one atom of an element • Chemical reaction that absorbs energy • Chemical reaction that releases energy • Anything that has mass and takes up space • Pure substance formed when non-metals combine • States that mass cannot be created or destroyed • Horizontal row of elements in the periodic table • ...

Crossword 2024-08-27

Crossword crossword puzzle
Across
  1. Negatively charged formed by gaining electrons
  2. A chemical reaction with absorption of heat energy
  3. Fusion The Energy released by fusing nuclei of every light element under extremely high temperature and pressure
  4. Mixture with various constituents without getting mixed uniformly
  5. Fission The process obtaining nuclear energy by splitting the nucleus by slowly moving electrons
  6. positively charged ions formed by losing 1,2 or 3 electrons
  7. The path in which electrons revolve around the nucleus in fixed path
  8. A negatively charged subatomic particle that orbits the nucleus of an atom.
  9. An electrically charged particle formed by the loss or gain of electrons
  10. the atom of same element having same atomic no. but different mass no.s
  11. A chemical reaction with release of heat energy
Down
  1. A subatomic particle that has no electric charge, present in the nucleus of an atom and has mass equal to an hydrogen atom
  2. A group of atoms having some electric charge which can retain its identity in series of chemical reaction
  3. New substance formed as a result of chemical reaction
  4. A substance formed by mixing two substances
  5. Mixture with different constituents mixed uniformly
  6. A positively charged subatomic present in the nucleus and has mass equal to an atom of hydrogen
  7. The substance/substances taking part in chemical reaction
  8. A pure substance composed of two or more elements combined chemically in a fixed proportion and can be separated by chemical means only
  9. Represents short form of an element
  10. A pure substance which cannot be broken into two or more substances by any physical and chemical means

21 Clues: Represents short form of an element • A substance formed by mixing two substances • Negatively charged formed by gaining electrons • A chemical reaction with release of heat energy • A chemical reaction with absorption of heat energy • Mixture with different constituents mixed uniformly • New substance formed as a result of chemical reaction • ...

Unit 2 Vocab. 2022-11-16

Unit 2 Vocab. crossword puzzle
Across
  1. reaction that absorbs energy
  2. a group of two more atoms held together by a chemical bond
  3. substance formed as a result of a chemical reaction
  4. shows the number and types of atoms present in a molecule
  5. an arrangement of the elements
  6. shows the reactants and the products, separated by an arrow
  7. created or manufactured by humans
  8. substance(s) that enter into a chemical reaction
Down
  1. anything naturally occurring in the environment that humans use
  2. one or two letter abbreviation of an element
  3. reaction that releases energy, usually in the form of heat
  4. one or more substances combine or break down to form new substances
  5. number of protons in the nucleus of an atom
  6. matter is not created or destroyed in any chemical reaction
  7. substance made of only one type of atom
  8. small sized number representing the number of atoms of that element
  9. a substance made of two or more elements
  10. positively charged center of an atom
  11. alters the form/appearance of matter
  12. basic unit of matter

20 Clues: basic unit of matter • reaction that absorbs energy • an arrangement of the elements • created or manufactured by humans • positively charged center of an atom • alters the form/appearance of matter • substance made of only one type of atom • a substance made of two or more elements • number of protons in the nucleus of an atom • one or two letter abbreviation of an element • ...

Law of Conservation of Mass 2024-10-15

Law of Conservation of Mass crossword puzzle
Across
  1. A rule in science that is always true
  2. The number at the bottom right hand of the symbol that shows the number of atoms of that element
  3. the chemical process by which atoms are rearranged to produce new substances
  4. The unit of measure for mass in the metric system
  5. The name given to the substances formed in a chemical reaction, on the right side of the arrow
  6. The name given to the arrow in a chemical reaction
  7. if a chemical reaction has 10 g of a compound to start with how many grams does it need to end with to follow the law conservation of mass?
Down
  1. Anything that has mass and takes up space
  2. The amount of matter in an object
  3. When determining the total number of atoms, if there’s a coefficient and a subscript, what do you do to them?
  4. the combination of chemical symbols and numbers that represent matter
  5. original substances or atoms on the left-hand side of the arrow
  6. The same number of atoms are present ______ and after the chemical reaction
  7. On the reactant side, there is 2 g of a compound and on the product side there is 8 g of total product. How many grams are missing from the reactant side?
  8. Both sides of the equation must end with the _______ number of atoms
  9. The number placed in front of the chemical formula to show the number of molecules
  10. ______ substances in a chemical reaction must be made of the same number of atoms the reaction started with

17 Clues: The amount of matter in an object • A rule in science that is always true • Anything that has mass and takes up space • The unit of measure for mass in the metric system • The name given to the arrow in a chemical reaction • original substances or atoms on the left-hand side of the arrow • Both sides of the equation must end with the _______ number of atoms • ...

Biology Chapter 2 2023-08-30

Biology Chapter 2 crossword puzzle
Across
  1. substance that changes rate of chemical reaction but isn't used up
  2. substance present before a chemical reaction
  3. smallest particle of a covalently bonded compound
  4. drives the physical and chemical processes necessary for life
  5. slows a chemical reaction by binding to enzymes
  6. attraction between particles of different substances
  7. change that does not change the identity of a substance
  8. organic compound that is a source of energy and structure
  9. molecules with uneven electrical charge
  10. covalently bonded compound containing carbon
  11. pure substance made of only one kind of atom
  12. substance formed during a chemical reaction
  13. organic compound that provides building blocks for proteins
  14. pure substance made or two or more elements chemically combined
  15. substance that can produce hydrogen ions (H+)in solution
Down
  1. organic compound that provides building blocks for DNA and RNA
  2. change that results in new substances being formed
  3. average speed of the particles in a substance
  4. physical stuff that makes up the universe
  5. naturally occurring catalyst, usually a protein, that assists a chemical reaction
  6. tendency of energy to disperse or spread out
  7. particles in solution evenly distributed by Brownian motion
  8. nonpolar organic compound providing energy storage and cell membrane
  9. substance that can produce hydroxide ions (OH-) in solution
  10. organic compound that includes sugars, starch and cellulose
  11. attraction between molecules in polar substances
  12. smallest particle of an element
  13. attraction between atoms by transferring or sharing electrons

28 Clues: smallest particle of an element • molecules with uneven electrical charge • physical stuff that makes up the universe • substance formed during a chemical reaction • substance present before a chemical reaction • tendency of energy to disperse or spread out • covalently bonded compound containing carbon • pure substance made of only one kind of atom • ...

Chemical Reactions 2022-03-18

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

26 Clues: A reaction in 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 • Breaks down compounds into similar products • The amount of a substance in a given volume • When matter is not allowed to enter or leave • A material that releases energy when it burns • ...

Vocab 2023-11-03

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

17 Clues: - an ion with a negative charge • - an ion with a positive charge • 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 • ...

Types of Reactions 2024-05-05

Types of Reactions crossword puzzle
Across
  1. Substance that speeds up a reaction
  2. Release of heat
  3. Exchange of ions
  4. Gradual deterioration of materials
  5. Substance that changes in a reaction
  6. Multiple reactants and a single product
  7. Synonym of Combination reaction
  8. Addition of oxygen
Down
  1. Provide unpleasant odour to foods
  2. Symbolic representation of a chemical reaction
  3. An element of a compound is replaced by another element
  4. Removal of oxygen
  5. New material formed in a reaction
  6. Chemical reaction expressed in words
  7. Single reactant and multiple products
  8. Absorption of heat

16 Clues: Release of heat • Exchange of ions • Removal of oxygen • Absorption of heat • Addition of oxygen • Synonym of Combination reaction • Provide unpleasant odour to foods • New material formed in a reaction • Gradual deterioration of materials • Substance that speeds up a reaction • Chemical reaction expressed in words • Substance that changes in a reaction • ...

Law of Conservation of Mass and Reactions 2025-02-26

Law of Conservation of Mass and Reactions crossword puzzle
Across
  1. Type of reaction where a single reactant breaks down into two or more simpler products.
  2. A symbolic representation of a chemical reaction using formulas and symbols.
  3. Type of reaction where one element replaces another in a compound.
  4. A small number written below an element symbol indicating the number of atoms in a molecule (e.g., the "₂" in H₂O).
  5. A number placed in front of a chemical formula to balance the equation.
  6. A chemical equation that shows the formulas of reactants and products but is not balanced.
  7. Type of reaction where two or more reactants combine to form a single product.
Down
  1. The starting substances in a chemical reaction, found on the left side of the equation.
  2. Type of reaction where two compounds exchange elements to form two new compounds.
  3. The substances formed in a chemical reaction, found on the right side of the equation.
  4. A chemical equation where the number of atoms of each element is the same on both sides, ensuring the law of conservation of mass is followed.
  5. Type of reaction where a substance (usually a hydrocarbon) reacts with oxygen to produce carbon dioxide and water.
  6. A representation of a substance using chemical symbols and numbers (e.g., H₂O, CO₂).
  7. The one or two-letter abbreviation for an element (e.g., H for hydrogen, O for oxygen).

14 Clues: Type of reaction where one element replaces another in a compound. • A number placed in front of a chemical formula to balance the equation. • A symbolic representation of a chemical reaction using formulas and symbols. • Type of reaction where two or more reactants combine to form a single product. • ...

Chemical Reactions 2013-03-06

Chemical Reactions crossword puzzle
Across
  1. Number in front of a molecule to show how many of that molecule are present in a chemical reaction.
  2. Type of bond in which electrons are transferred from one atom to another.
  3. State of matter in which the molecules are spread the furthest apart.
  4. Type of chemical reaction in which one compound breaks up into two or more elements or compounds.
  5. Type of chemical reaction in which two atoms replace each other in two compounds
  6. An atom with a positive or negative charge.
  7. A negatively-charged atom.
  8. A positively-charged atom.
  9. Type of bond in which atoms share electrons.
Down
  1. Negatively charged subatomic particle.
  2. The rearrangement of atoms to form new compounds.
  3. Type of chemical reaction in which one atom replaces another in a compound.
  4. Positively charged subatomic particle.
  5. Displays the chemical elements and is organized based on atomic numbers and electron configuration.
  6. The smallest particle of matter that keeps the same properties of that element.
  7. Type of chemical reaction in which two elements come together to form one compound.
  8. State of matter in which the molecules are very tightly packed together.
  9. The electrons that are in the outermost shell in an atom.

18 Clues: A negatively-charged atom. • A positively-charged atom. • Negatively charged subatomic particle. • Positively charged subatomic particle. • An atom with a positive or negative charge. • Type of bond in which atoms share electrons. • The rearrangement of atoms to form new compounds. • The electrons that are in the outermost shell in an atom. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

chemistry vocab 2025-05-01

chemistry vocab crossword puzzle
Across
  1. amount of matter
  2. change effecting the form
  3. space/amount of something in an object
  4. result of chemical reaction
  5. action sticking together
  6. study with chemicals
  7. has mass and volume edothermic absorption of heat
  8. connected by chemical bonds
  9. energy released heat
  10. one or more substances
  11. small basic block
Down
  1. average amount of energy motion
  2. observed without change
  3. physical blend of multiple substances
  4. property property of a substance
  5. increase rate of reaction
  6. two or more elements chemically combined
  7. substance that converts into something new
  8. capacity to cause change
  9. temperature
  10. the force that holds atoms together

21 Clues: temperature • amount of matter • small basic block • study with chemicals • energy released heat • one or more substances • observed without change • action sticking together • capacity to cause change • change effecting the form • increase rate of reaction • result of chemical reaction • connected by chemical bonds • average amount of energy motion • property property of a substance • ...

Physical & Chemical Changes Crossword Puzzle 2026-01-29

Physical & Chemical Changes Crossword Puzzle crossword puzzle
Across
  1. A change where no new substance is formed.
  2. Cutting wood into pieces.
  3. Butter changing from solid to liquid.
  4. A word meaning a change in matter.
  5. Light produced in a reaction.
  6. Wood turning into ash.
  7. Bending an object.
  8. Water changing into ice.
  9. Breaking glass.
  10. Heat released during a reaction.
Down
  1. A sign of chemical change when gas appears.
  2. Food changing when cooked.
  3. Ice changing into water.
  4. A change that makes a new substance.
  5. A sign of chemical change when color changes.
  6. Cutting paper into pieces.
  7. Pulling paper apart.
  8. Metal reacting with oxygen.
  9. Mixing vinegar and baking soda.
  10. Flattening a soda can.

20 Clues: Breaking glass. • Bending an object. • Pulling paper apart. • Wood turning into ash. • Flattening a soda can. • Ice changing into water. • Water changing into ice. • Cutting wood into pieces. • Food changing when cooked. • Cutting paper into pieces. • Metal reacting with oxygen. • Light produced in a reaction. • Mixing vinegar and baking soda. • Heat released during a reaction. • ...

Chemical Reaction Crossword 2022-05-08

Chemical Reaction Crossword crossword puzzle
Across
  1. Reaction that gives out energy in the form of heat
  2. Substance that speeds up a reaction without being consumed
  3. Reaction between an acid and base forming water and salts
  4. Reaction in which one element replaces another within a compound
  5. Chemical link that holds molecules together
  6. Reaction that takes in energy in the form of heat
  7. Gain of oxygen by a substance during a chemical reaction
Down
  1. Energy is the energy needed to start a reaction
  2. Factor affecting the rate of reactions
  3. Substance that participates in a chemical reaction
  4. Chemical reaction in which a single compound breaks down into two or more elements or compounds
  5. Solid that forms a solution during a chemical reaction

12 Clues: Factor affecting the rate of reactions • Chemical link that holds molecules together • Energy is the energy needed to start a reaction • Reaction that takes in energy in the form of heat • Reaction that gives out energy in the form of heat • Substance that participates in a chemical reaction • Solid that forms a solution during a chemical reaction • ...

Chemical Bonding Vocab Crossword 2024-09-10

Chemical Bonding Vocab Crossword crossword puzzle
Across
  1. type of chemical in which two or more simple substances combine to form a more complex substance.
  2. a chemical change that results in the rearrangement of atoms forming products with new properties.
  3. a chemical reaction accompanied by the absorption of heat.
  4. a rule stating that atoms lose, gain, or share electrons in order to have 8 valence electrons.
  5. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
  6. acronym of International Union of Pure and Applied Chemistry. An organization that establishes official names of chemical elements and compounds.
  7. a substance that is the result of a chemical change and is written on the right side of the arrow in a chemical equation.
  8. a positively charged ion due to the loss of 1 or more electrons.
  9. type of covalent bond in which the electrons are not being shared equally. This results in one end of the molecule having a slightly negative charge and the other a slightly positive charge.
  10. type of covalent bond in which the electrons are being shared equally.
  11. a way to describe what goes on in a chemical reaction, the actual change in a material.
Down
  1. a law stating that matter is neither created nor destroyed. In a chemical reaction, the same number of atoms occurs in the products as in the original reactants.
  2. type of chemical reaction in which a compound and oxygen is combined to produce heat and new product.
  3. a type of chemical reaction in which a single uncombined element replaces another in a compound.
  4. a covalently bonded group of atoms that usually forms ionic bonds with other atoms.
  5. a chemical reaction that releases energy in the form of light or heat.
  6. a type of chemical reaction in which a more complex substance breaks down into its more simple parts.
  7. numerical charge of an ion that indicates the number of electrons lost, gained, or shared.
  8. an electrically charged atom due to losing or gaining 1 or more electrons.
  9. an electron located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
  10. a substance that undergoes a chemical change and is written on the left side of the arrow in a chemical equation.
  11. a region that forms when valence electrons from different atoms interact with each other.
  12. bond formed by the sharing of electrons. Occurs between two nonmetals.
  13. written above the line to indicate the charge (oxidation number) of the ion.
  14. the number placed in front of molecules in a chemical equation that represent the number of molecules.
  15. bond formed by the transferring of electrons. Occurs between a metal (loses electrons) and a nonmetal (gains electrons).
  16. written below the line to indicate the number of atoms.
  17. a word added in the front of another word. Prefixes are used in naming covalent compounds.
  18. a negatively charged ion due to gaining 1 or more electrons.

29 Clues: written below the line to indicate the number of atoms. • a chemical reaction accompanied by the absorption of heat. • a negatively charged ion due to gaining 1 or more electrons. • a positively charged ion due to the loss of 1 or more electrons. • a chemical reaction that releases energy in the form of light or heat. • ...

Chapter 7 Vocab 2024-01-02

Chapter 7 Vocab crossword puzzle
Across
  1. a reaction in which a compound breaks down into two or more simpler substances
  2. a reaction in which one element is substituted for another element in a compound
  3. a reaction in which energy is released in the form of light or heat
  4. the species formed from chemical reactions
  5. the symbolic representation of a chemical reaction in the form of symbols and chemical formulas
  6. the unit of measurement in the International System of Units (SI) for amount of substance
Down
  1. a chemical reaction in which a fuel undergoes oxidation by reacting with an oxidising agent, resulting in the release of energy
  2. any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
  3. a chemical process in which two or more simple elements or compounds combine to form a more complex product
  4. occur when parts of two ionic compounds are exchanged, making two new compounds
  5. chemical reactions in which the reactants absorb heat energy from the surroundings to form products
  6. a substance that takes part in and undergoes change during a reaction
  7. the energy which is stored in the bonds of chemical compounds
  8. the mass of a chemical compound divided by its amount-of-substance measured in moles
  9. a number that is constant for a given substance, body, or process under certain specified conditions

15 Clues: the species formed from chemical reactions • the energy which is stored in the bonds of chemical compounds • a reaction in which energy is released in the form of light or heat • a substance that takes part in and undergoes change during a reaction • a reaction in which a compound breaks down into two or more simpler substances • ...

Chemistry 2023-10-02

Chemistry crossword puzzle
Across
  1. Ability of a substance to conduct electricity.
  2. Basic unit of matter composed of protons, neutrons, and electrons.
  3. Substance made of two or more different elements chemically combined.
  4. Substance that cannot be broken down into simpler substances by chemical means.
  5. Amount of matter in an object.
  6. Substance that participates in a chemical reaction.
  7. State of matter such as solid, liquid, or gas.
  8. Homogeneous mixture of two or more substances.
  9. Tabular arrangement of chemical elements.
  10. Connection between atoms in a molecule.
Down
  1. Substance formed as a result of a chemical reaction.
  2. Substance that speeds up a chemical reaction without being consumed in the process.
  3. Substance with a pH less than 7, often corrosive and sour in taste.
  4. Chemical compound composed of two or more atoms bonded together.
  5. Atom or molecule with an electric charge.
  6. Measure of the average kinetic energy of particles in a substance.
  7. Substance with a pH greater than 7, often bitter and slippery in feel.
  8. Process in which atoms are rearranged to create new substances.
  9. Number of bonds an atom can form with other atoms.
  10. State of matter with no definite shape or volume.

20 Clues: Amount of matter in an object. • Connection between atoms in a molecule. • Atom or molecule with an electric charge. • Tabular arrangement of chemical elements. • Ability of a substance to conduct electricity. • State of matter such as solid, liquid, or gas. • Homogeneous mixture of two or more substances. • State of matter with no definite shape or volume. • ...

Chemical Reactions Vocab Review #1 2023-12-05

Chemical Reactions Vocab Review #1 crossword puzzle
Across
  1. Made in chemical reactions
  2. Indicates how many atoms
  3. Shorthand way of writing a chemical reaction
  4. Used in chemical reactions like ingredients
  5. Mixture description where water is the solvent
  6. Energy released in reaction during this process
  7. Indicates how many molecules
  8. Needed to start reactions
Down
  1. Process that causes chemical change
  2. Matter is neither created or destroyed but is transformed.
  3. Change type example melting ice
  4. When 2 liquids are mixed and a solid forms
  5. Energy taken in to do this in the reaction
  6. Change type example rotting fruit
  7. Fancy word for gas production or bubbling
  8. Statement or mathematical equation that describes or predicts a natural phenomenon
  9. What we can see observe or measure
  10. You tell the doctor how you feel

18 Clues: Indicates how many atoms • Needed to start reactions • Made in chemical reactions • Indicates how many molecules • Change type example melting ice • You tell the doctor how you feel • Change type example rotting fruit • What we can see observe or measure • Process that causes chemical change • Fancy word for gas production or bubbling • ...

Chemical reactions and equations word search BY EMAD 2025-04-28

Chemical reactions and equations word search BY EMAD crossword puzzle
Across
  1. The capacity to do work or produce heat in chemical reactions.
  2. A group of two or more atoms chemically bonded together.
  3. A representation of a chemical reaction using symbols and formulae.
  4. A reaction where simpler substances combine to form a complex compound.
  5. A measure of the heat involved in a chemical reaction.
  6. Formation of an insoluble solid from two solutions.
  7. A chemical reaction that produces heat and light, usually with a flame.
  8. A change where a new substance is formed with different properties.
  9. A substance that changes the speed of a chemical reaction without being used up.
  10. The smallest unit of an element that retains its properties.
Down
  1. A pure substance made of only one kind of atom.
  2. A chemical reaction that requires energy input to proceed.
  3. The breakdown of a single compound into simpler substances.
  4. Formation of reddish-brown substance on iron due to moisture.
  5. The breakdown of a compound using an electric current.

15 Clues: A pure substance made of only one kind of atom. • Formation of an insoluble solid from two solutions. • The breakdown of a compound using an electric current. • A measure of the heat involved in a chemical reaction. • A group of two or more atoms chemically bonded together. • A chemical reaction that requires energy input to proceed. • ...

Chemical and physical properties 2024-03-14

Chemical and physical properties crossword puzzle
Across
  1. A substance produced in a chemical reaction
  2. A characteristic of a pure substance that can be observed without changing it into another substance
  3. the force that holds two atoms together
  4. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  5. A change in matter that produces one or more new substances
  6. A reaction that releases energy in the form of heat
  7. A reaction in which energy is absorbed
  8. Characteristic that cannot be observed without altering the substance
Down
  1. Matter is not created nor destroyed in any chemical or physical change
  2. the process by which one or more substances change to produce one or more different substances
  3. A change in a substance that does not involve a change in the identity of the substance
  4. A group of atoms bonded together
  5. A chemical substance that is present at the start of a chemical reaction
  6. A solid that forms from a solution during a chemical reaction.
  7. number in front of a variable

15 Clues: number in front of a variable • A group of atoms bonded together • A reaction in which energy is absorbed • the force that holds two atoms together • A substance produced in a chemical reaction • A reaction that releases energy in the form of heat • A change in matter that produces one or more new substances • ...

Chemical Reactions 2021-11-20

Chemical Reactions crossword puzzle
Across
  1. When an acid and base react quantitatively with each other.
  2. A solution with a large volume of acid
  3. A unit of measuring the acidity of a substance.
  4. An acid that is dilute.
  5. Something that will show whether a substance is acidic or basic.
  6. A ratio of hydrogen and carbon atoms such as alkanes, methane a propane. When burnt in a limited amount of air, carbon monoxide is produced rather than carbon dioxide.
  7. The substances that undergo a change in chemical reactions.
  8. A natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, carbonate or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment.
  9. A common indicator
  10. A type of acid that will not easily give way hydrogen ions
  11. A reaction that emits excess energy in the form of heat, light or electricity. Heat packs, match burning and rusting are examples of this chemical reaction.
  12. dioxide The product of hydrocarbons burning in unlimited air, a compound of carbon and oxygen.
  13. A product of base and acid reactions and acid and metal reactions.
Down
  1. A material that can not be replaced naturally in rate of it being used.
  2. A reaction when things burn, it is a chemical reaction when a flame reacts with oxygen to produce a large amount of heat rapidly.
  3. A natural indicator
  4. An indicator
  5. The result of a chemical reaction.
  6. A type of acid that wants to give away its hydrogen ions.
  7. A substance that is used to create heat.
  8. A substance that gives away hydrogen ions, has a pH lower than 7, conducts electricity when mixed with water, neutralizes bases, has a sour taste and react with many bases.
  9. A reaction that absorbs heat, the reactants are cold. Ice packs and photosynthesis are examples of this chemical reaction.
  10. A base
  11. The process of an electron being removed from a molecule during a chemical reaction.
  12. A slow exothermic reaction where the electrons of a metal is removed from the molecule due to be exposed to water and oxygen.
  13. An acid with a ph of 3
  14. The process in which a material is able to be sustainably replaced and used.
  15. A highly volatile and flammable substance.
  16. A substance that is the chemical opposite of acids, has a slippery soapy feel, tastes bitter, higher pH than 7, when dissolved in water they are called alkanes and neutralize acids.
  17. A natural indicator

30 Clues: A base • An indicator • A common indicator • A natural indicator • A natural indicator • An acid with a ph of 3 • An acid that is dilute. • The result of a chemical reaction. • A solution with a large volume of acid • A substance that is used to create heat. • A highly volatile and flammable substance. • A unit of measuring the acidity of a substance. • ...

Science terms 2024-12-06

Science terms crossword puzzle
Across
  1. a substance or molecule that participates in a chemical reaction
  2. A substance or molecule that forms in a chemical reaction.
  3. a dissolved substance.
  4. a dissolved substance
  5. the basic unit of a chemical element.
  6. reaction- A process that occurs when two or more molecule interact to form new molecules
  7. water or the amount of water that falls to the earth as hail, mist, rain, sleet, or snow.
Down
  1. Known as the "Middle life" around 252 to 66 million years ago.
  2. the mostly solid bulk of Earth's interior.
  3. a type of mixture involving two or more substances.
  4. A chemical reaction that absorbs energy from it's enviorment
  5. reaction- A chemical reaction that releases thermal energy.
  6. The central or innermost portion of the Earth, lying below the mantle and probably consisting of iron and nickel.
  7. two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance
  8. any of the large bodies that revolve around the Sun in the solar system

15 Clues: a dissolved substance • a dissolved substance. • the basic unit of a chemical element. • the mostly solid bulk of Earth's interior. • a type of mixture involving two or more substances. • A substance or molecule that forms in a chemical reaction. • reaction- A chemical reaction that releases thermal energy. • A chemical reaction that absorbs energy from it's enviorment • ...

Biochemistry Vocabulary 2016-10-26

Biochemistry Vocabulary crossword puzzle
Across
  1. / molecular sub-unit of polymer
  2. / basic unit of life
  3. / a very large molecule as a colloidal, particle, protein or a polymer exposed of hundreds or thousands of atoms
  4. / a group that includes sugar, starch, and cellulose
  5. Bonds / chemical bond formed through the electrical force between oppositely charged ions
  6. / large, carbon based molecule formed by monomers
  7. / measurement of acidity
  8. Reaction / a chemical reaction in which two molecules or moieties, often functional groups, combine to form a larger molecule, together with the loss of a small molecule
  9. / attraction between molecules of the same substances
  10. Acid / polymer or necleotides
Down
  1. / protein that catalyzes chemical reactions for organisms
  2. Bond / attraction between a slightly negative bond
  3. / two or more atoms held together by covalent bonds
  4. acid / molecule that makes up proteins
  5. / attraction between molecules of different substance
  6. / substance that decreases activation energy and increases reaction rate in chemical reaction
  7. / molecule composed of C, H, O
  8. Synthesis / A chemical reaction that builds up molecules by losing water molecules
  9. / substance made of only one type of atom that cannot be broken down by chemical means
  10. & Key Model / Only the correct sized key (substrate) fits into the key hole (active site) of the lock (enzyme)
  11. / polymer composed of amino acids linked by peptide bonds
  12. / non-polar molecule composed of C, H, O

22 Clues: / basic unit of life • / measurement of acidity • Acid / polymer or necleotides • / molecule composed of C, H, O • / molecular sub-unit of polymer • acid / molecule that makes up proteins • / non-polar molecule composed of C, H, O • / large, carbon based molecule formed by monomers • Bond / attraction between a slightly negative bond • ...

Chemical Bonding Crossword 2017-03-23

Chemical Bonding Crossword crossword puzzle
Across
  1. A substance that undergoes chemical change
  2. A substance that reacts an acid to form a salt and water
  3. A solid which form and settles in a solution
  4. The substances formed as a result of chemical change
  5. The way chemists write down chemical reactions
  6. An Ion with a positive electric charge
  7. A chemical reaction that gives off energy
  8. The removal of acidity or alkalinity in a substance
  9. A way of describing the composition of a substance, using symbols or numbers
Down
  1. A chemical reaction that takes in energy
  2. A substance which contains hydrogen that can be replaced by a metal in solution, it turns litmus red
  3. The smallest particle of a compound which can normally exist by itself and still have the properties of the substance
  4. A substance containing two or more elements which have been chemically combined
  5. The energy needed for a reaction to occur
  6. The measure of acidity or alkalinity in a substance
  7. A compound made up of molecules: the molecules consist of atoms that are linked by sharing electrons
  8. A substance which alter the speed of a chemical reaction but remains chemically unchanged itself at the end of the reaction
  9. A compound mad up of ions
  10. A changed particle: an atom or group of atoms which has lost or gained electrons
  11. An ion with a negative electric charge

20 Clues: A compound mad up of ions • An Ion with a positive electric charge • An ion with a negative electric charge • A chemical reaction that takes in energy • The energy needed for a reaction to occur • A chemical reaction that gives off energy • A substance that undergoes chemical change • A solid which form and settles in a solution • ...

ElectroChemical Process 2025-03-26

ElectroChemical Process crossword puzzle
Across
  1. Substance that conducts electric current by movement of ions.
  2. Combined process of reduction and oxidation.
  3. Process of coating an object with metal using electricity.
  4. Process of using electricity to drive a chemical reaction.
  5. potential Voltage difference between two electrodes of a cell.
  6. cell Device that generates electrical energy from chemical reactions or vice versa.
  7. Purifying metal using electrochemical methods.
  8. transfer Movement of electrons from one substance to another.
  9. cell A cell that converts chemical energy into electrical energy spontaneously.
  10. Flow of electric charge.
  11. Device consisting of one or more electrochemical cells.
  12. electrode potential Measured voltage of an electrode under standard conditions.
  13. Loss of electrons in a chemical reaction.
  14. Electrode where oxidation occurs.
  15. Charged particles formed from atoms or molecules.
Down
  1. bridge Device that maintains electrical neutrality in a galvanic cell.
  2. Conductor through which electric current enters or leaves a solution.
  3. Part of an electrochemical cell where either oxidation or reduction occurs.
  4. Deposition of material on an electrode using electric current.
  5. Ability of a solution or material to conduct electricity.
  6. Gain of electrons in a chemical reaction.
  7. Extra voltage needed to drive an electrochemical reaction.
  8. Electrical potential difference between two points.
  9. law Law relating amount of substance altered at an electrode to quantity of electricity.
  10. Gradual destruction of materials by chemical reaction with environment.
  11. Electrode where reduction occurs.

26 Clues: Flow of electric charge. • Electrode where reduction occurs. • Electrode where oxidation occurs. • Gain of electrons in a chemical reaction. • Loss of electrons in a chemical reaction. • Combined process of reduction and oxidation. • Purifying metal using electrochemical methods. • Charged particles formed from atoms or molecules. • ...

Kinetics and Hess's Law 2022-02-08

Kinetics and Hess's Law crossword puzzle
Across
  1. a reaction in which products are produced from reactants and it goes from left to right in a reversible reaction
  2. a process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light, electricity, or sound
  3. the action of briskly stirring or disturbing something, especially a liquid
  4. a molecular entity that is formed from the reactants and reacts further to give the directly observed products of a chemical reaction
  5. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  6. used to relate the free energy changes that occur during the progress of chemical processes to the rate and equilibrium constants of the process
  7. the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst.
  8. a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously
  9. a substance which slows down or prevents a particular chemical reaction or other process or which reduces the activity of a particular reactant, catalyst, or enzyme
Down
  1. any process with an increase in the enthalpy H of the system
  2. the branch of physical chemistry that is concerned with understanding the rates of chemical reactions
  3. a thermodynamic quantity equivalent to the total heat content of a system
  4. the amount of area covered by the surface of something
  5. the speed at which a chemical reaction takes place
  6. the degree or intensity of heat present in a substance or object
  7. he energy change in an overall chemical reaction is equal to the sum of the energy changes in the individual reactions comprising it

16 Clues: the speed at which a chemical reaction takes place • the amount of area covered by the surface of something • any process with an increase in the enthalpy H of the system • the degree or intensity of heat present in a substance or object • a thermodynamic quantity equivalent to the total heat content of a system • ...

Chemical Reactions 2024-08-22

Chemical Reactions crossword puzzle
Across
  1. A reaction where a solid is formed from two aqueous solutions
  2. A pure substance
  3. A substance that takes part in a chemical reaction
  4. A reaction where the reactant breaks down into two or more products
  5. When the rate of reaction is increased by adding more particles.
  6. Particle with a negative charge
  7. When the reactants are broken up into a powder (___________ area)
Down
  1. The name of a biological catalyst (such as in your saliva)
  2. A reaction where two or more reactants create a new product
  3. When the rate of reaction is increased by adding a chemical that is not used up.
  4. A substance that is created in a chemical reaction
  5. The smallest possible particle of matter
  6. An atoms that has gained or lost electrons
  7. When the rate of reaction in increased by adding thermal energy.
  8. Two or more elements bonded together
  9. When the rate of reaction is increased by adding kinetic energy.

16 Clues: A pure substance • Particle with a negative charge • Two or more elements bonded together • The smallest possible particle of matter • An atoms that has gained or lost electrons • A substance that is created in a chemical reaction • A substance that takes part in a chemical reaction • The name of a biological catalyst (such as in your saliva) • ...

Topic 3 Vocab 2025-11-19

Topic 3 Vocab crossword puzzle
Across
  1. A mixture where tiny particles are spread throughout but don’t settle out.
  2. A mixture where one substance dissolves completely in another.
  3. A substance that starts a chemical reaction.
  4. Materials found in nature that people use.
  5. The new substance formed after a chemical reaction.
  6. A mixture where particles are spread out but will eventually settle at the bottom.
  7. A type of chemical reaction that releases heat and feels warm.
  8. A large molecule made by joining many smaller molecules together.
  9. A type of change in size, shape, or state that doesn’t create a new substance.
  10. Made by humans, not found naturally.
Down
  1. Says that matter cannot be created or destroyed in a chemical reaction; it only changes form.
  2. The substance that dissolves the solute in a solution.
  3. A system where matter can enter or leave.
  4. The substance that gets dissolved in a solution.
  5. A type of chemical reaction that absorbs heat and feels cold.
  6. A system where no matter enters or leaves.
  7. How much of a solute can dissolve in a solvent at a certain temperature.
  8. A type of change where substances combine or break apart to form new substances.
  9. A combination of two or more substances that are not chemically joined.

19 Clues: Made by humans, not found naturally. • A system where matter can enter or leave. • Materials found in nature that people use. • A system where no matter enters or leaves. • A substance that starts a chemical reaction. • The substance that gets dissolved in a solution. • The new substance formed after a chemical reaction. • ...

Chemical Reactions 2023-02-14

Chemical Reactions crossword puzzle
Across
  1. can be observed about a substance, such as color, smell, or boiling point
  2. chemical reaction in which heat energy is absorbed
  3. able to cause damage
  4. temperature at which a liquid changes to a gas
  5. smallest unit of matter
  6. process that changes one set of chemicals into another set of chemicals
  7. a change in state of matter where no new substances are formed
Down
  1. Chemical reaction in which energy is primarily given off in the form of heat
  2. temperature at which a solid becomes a liquid
  3. combo of chemical symbols and numbers to represent a substance
  4. undergoes change during a reaction
  5. to change the position of something
  6. matter with a composition that is always the same atoms or same groups of atoms
  7. forms in a chemical reaction
  8. speeds up the rate of a chemical reaction
  9. A change in matter that produces one or more new substances

16 Clues: able to cause damage • smallest unit of matter • forms in a chemical reaction • undergoes change during a reaction • to change the position of something • speeds up the rate of a chemical reaction • temperature at which a solid becomes a liquid • temperature at which a liquid changes to a gas • chemical reaction in which heat energy is absorbed • ...

Chemical Kinetics 2023-10-18

Chemical Kinetics crossword puzzle
Across
  1. - Reactant molecule acted upon by an enzyme.
  2. - Speed at which a chemical reaction occurs.
  3. - Reaction releasing heat.
  4. - Interaction between reactant particles.
  5. - Time for half of a reactant to be consumed.
  6. - A reaction mechanism with multiple steps.
  7. - Substance formed and consumed in a reaction mechanism.
  8. - Reaction absorbing heat.
  9. - Mechanisms involving reactants and intermediates.
  10. - Substance that speeds up a reaction without being consumed.
  11. - Theory explaining molecular motion and reaction rates.
  12. - State between reactants and products.
  13. - Factor affecting reaction rate.
  14. - State where forward and reverse rates are equal.
  15. - Reactants and catalyst in the same phase.
  16. - Exponent determining the reaction rate dependence on reactant concentration.
  17. - Amount of a substance in a given volume.
  18. - Factor affecting reaction rate for gases.
Down
  1. - Equation relating temperature to reaction rate.
  2. - Biological catalyst.
  3. - Process in which substances transform into new substances.
  4. - Equation expressing the rate of a reaction in terms of reactant concentrations.
  5. - Number of reactant particles in an elementary reaction.
  6. - Substance that slows down a reaction.
  7. - Simplest step in a reaction mechanism.
  8. - A sequence of steps explaining a reaction.
  9. - Energy required to start a reaction.
  10. - Step in a reaction mechanism with the slowest rate.
  11. - Reactants and catalyst in different phases.
  12. - Sum of the exponents in the rate law equation.

30 Clues: - Biological catalyst. • - Reaction releasing heat. • - Reaction absorbing heat. • - Factor affecting reaction rate. • - Energy required to start a reaction. • - Substance that slows down a reaction. • - State between reactants and products. • - Simplest step in a reaction mechanism. • - Interaction between reactant particles. • - Amount of a substance in a given volume. • ...

Chemistry Now days 2024-06-08

Chemistry Now days crossword puzzle
Across
  1. A substance with a pH greater than 7 (4)
  2. Subatomic particle (8)
  3. Type of chemical bond formed by sharing electrons (9)
  4. Chemical species with an electric charge (3)
  5. Center of an atom (7)
  6. Type of substance formed by combining two or more elements (8)
  7. Particle with a positive charge in the nucleus (6)
  8. Smallest unit of a chemical element (4)
  9. Negatively charged particle (8)
Down
  1. Ending result of a chemical reaction (7)
  2. Substance that is dissolved in a solvent (6)
  3. A substance that speeds up a chemical reaction (8)
  4. Column in the periodic table (7)
  5. Substance in which the solute dissolves (7)
  6. Element with different numbers of neutrons (7)
  7. A substance with a pH less than 7 (4)
  8. Number of protons in an atom (7)
  9. Particle with no charge in the nucleus (7)
  10. Substance that participates in a chemical reaction (8)
  11. Basic unit of matter (4)

20 Clues: Center of an atom (7) • Subatomic particle (8) • Basic unit of matter (4) • Negatively charged particle (8) • Column in the periodic table (7) • Number of protons in an atom (7) • A substance with a pH less than 7 (4) • Smallest unit of a chemical element (4) • Ending result of a chemical reaction (7) • A substance with a pH greater than 7 (4) • ...

Unit 1 Test 2023-10-23

Unit 1 Test crossword puzzle
Across
  1. photosynthesis and cellular respiration are considered to be a _____
  2. the arrow in chemical equations points (towards OR away) the products
  3. chemical formula for energy
  4. internal balance
  5. pores in the leaves of plants that are responsible for gas exchange
  6. ____________, ATP, and carbon dioxide are products of cellular respiration
  7. the number of oxygen molecules in 6CO2
  8. both the carbon cycle and photosynthesis/cellular respiration are examples of the conservation of _____________
  9. how plants get water
  10. total number of water molecules in 6H2O
  11. water, sunlight, and ___________ are reactants of photosynthesis
  12. organelle that does photosynthesis
  13. which osmotic solution is an example of homeostasis?
  14. ______________ and glucose are reactants of cellular respiration
Down
  1. the organelle that does cellular respiration
  2. the outputs of a chemical reaction
  3. the common name for C6H12O6
  4. body temperature is an example of ______________ feedback
  5. negative feedback is a response in the ______________ direction
  6. positive feedback is a response in the _________ direction
  7. light energy into chemical energy (C6H12O6)
  8. smallest unit of matter
  9. chemical reaction that turns glucose into ATP, cellular ______________
  10. the inputs of a chemical reaction
  11. chemical reaction in cells that creates energy
  12. how humans rid themselves of CO2
  13. blood clotting is an example of ______________ feedback
  14. _____________ cycle, movement of C throughout an ecosystem
  15. the chemical equations for photosynthesis and cellular respiration are ________ of each other

29 Clues: internal balance • how plants get water • smallest unit of matter • the common name for C6H12O6 • chemical formula for energy • how humans rid themselves of CO2 • the inputs of a chemical reaction • the outputs of a chemical reaction • organelle that does photosynthesis • the number of oxygen molecules in 6CO2 • total number of water molecules in 6H2O • ...

Chemical Reactions 2025-04-29

Chemical Reactions crossword puzzle
Across
  1. substance formed after chemical reaction
  2. oxidation of fat
  3. reactions in which one substance reacts to form two or more substances
  4. solid residue after chemical reaction
  5. receiving hydrogen and removing oxygen
  6. seperating hydrogen and oxygen in water
  7. reaction that gives out heat
  8. reactions in which two substances combine
Down
  1. receiving oxygen and removing hydrogen
  2. more reactive metal exchanges with less reactive metal
  3. process of color change of metals due to moisture or air
  4. substance that speeds up chemical reaction
  5. decomposition through sunlight
  6. reaction that absorb heat
  7. decomposition through heat

15 Clues: oxidation of fat • reaction that absorb heat • decomposition through heat • reaction that gives out heat • decomposition through sunlight • solid residue after chemical reaction • receiving oxygen and removing hydrogen • receiving hydrogen and removing oxygen • seperating hydrogen and oxygen in water • substance formed after chemical reaction • ...

4.2.1 Key terms crossword puzzle. 2024-03-16

4.2.1 Key terms crossword puzzle. crossword puzzle
Across
  1. respiration The process by which cells break down glucose to produce energy.
  2. reaction A reaction where ions exchange partners to form new compounds.
  3. change A change in which new substances with different properties are formed.
  4. reaction A reaction in which two compounds exchange ions to form two new compounds.
  5. reaction A reaction where two or more substances combine to form a new compound.
  6. A mixture of two or more substances not chemically combined.
  7. Describes a substance that does not dissolve in a solvent.
  8. Forms when two solutions react to produce an insoluble solid.
Down
  1. reaction Type of reaction where a single compound breaks down into simpler substances.
  2. a substance that takes part in and undergoes change during a reaction.
  3. Describes a substance that can be dissolved in a solvent.
  4. Represents the physical form of matter (solid, liquid, gas).
  5. Starting substances in a chemical reaction.
  6. reaction A reaction in which two compounds exchange ions to form two new compounds.
  7. change A change in which no new substance is formed.
  8. formation reaction A reaction that produces gas as a product.
  9. equation Represents a chemical reaction using symbols and formulas.
  10. When a solid substance disperses into a liquid to form a solution.
  11. The maximum amount of solute that can dissolve in a solvent at a given temperature.

19 Clues: Starting substances in a chemical reaction. • change A change in which no new substance is formed. • Describes a substance that can be dissolved in a solvent. • Describes a substance that does not dissolve in a solvent. • Represents the physical form of matter (solid, liquid, gas). • A mixture of two or more substances not chemically combined. • ...

chapter 5 activity choice board 2021-11-30

chapter 5 activity choice board crossword puzzle
Across
  1. chemical reactions that absorb thermal energy
  2. a description of a reaction using element symbols and chemical formula
  3. a substance that increases reaction rate
  4. a chemical reaction in which a substance combines with oxygen to release energy
  5. when one element swaps with another in a compound
  6. a process in which atoms of one or more substances rearrange to form one or more new substances
  7. a type of chemical reaction in which two substances combine to form one compound
Down
  1. how one compound breaks down to create one or more new substances
  2. when two elements swap with others in compounds
  3. a substance that slows or even stops a reaction rate
  4. the total mass of the reactants of a chemical equation shall be the same as the products
  5. the minimum amount of energy required to start a chemical reaction
  6. a chemical reaction that release thermal energy

13 Clues: a substance that increases reaction rate • chemical reactions that absorb thermal energy • when two elements swap with others in compounds • a chemical reaction that release thermal energy • when one element swaps with another in a compound • a substance that slows or even stops a reaction rate • how one compound breaks down to create one or more new substances • ...

Balancing Chemical Equations 2023-05-13

Balancing Chemical Equations crossword puzzle
Across
  1. reactions usually occur faster at higher _____
  2. the process in which atoms are rearranged to produce new
  3. reaction rate is higher when reactant _____ is higher
  4. _____ can increase reaction rate by bringing together reactants
  5. crushing or grinding solids increases _____ and reaction rate
  6. substances formed in a chemical reaction
  7. uses chemical symbols and numbers to represent a given substance
  8. state that energy can’t be created or destroyed only change form
Down
  1. expression that uses symbols to show relationship between starting substances and substances that are produced by chemical reaction
  2. substances that participate in chemical reaction
  3. chemical that requires input of energy
  4. chemical reaction when energy is released to surroundings

12 Clues: chemical that requires input of energy • substances formed in a chemical reaction • reactions usually occur faster at higher _____ • substances that participate in chemical reaction • reaction rate is higher when reactant _____ is higher • the process in which atoms are rearranged to produce new • chemical reaction when energy is released to surroundings • ...

Intro to Chemistry 2023-03-15

Intro to Chemistry crossword puzzle
Across
  1. Chemical capable of restoring pH values to their normal value
  2. Electrons found in the outer energy level of an atom
  3. When a solid changes directly into a gas
  4. When a gas turns directly into a solid
  5. A pure substance in which two or more different elements are chemically combined
  6. Mixture in which substances are evenly mixed throughout
  7. When a gas turns into a liquid
  8. Molecules in which the electrons are not shared equally resulting in opposite charges on each end of the molecule
  9. Has a definite shape and volume
  10. Chemical with a pH of 7
  11. Change in which the chemical composition stays the same
  12. Chemical capable of speeding up a reaction without being changed by the reaction
  13. Chemical that releases hydrogen ions, H+, when dissolved in water, tastes sour, and has a pH below 7
  14. Chemical that removes hydrogen ions, H+, from water, taste bitter, and have a pH above 7
Down
  1. Change in which the chemical composition changes and a new substance is produced
  2. Substances that react during a chemical reaction
  3. Mixtures in which the separate parts can be easily distinguished
  4. Substances that are produced during a chemical reaction
  5. Has a definite volume but takes the shape of its container
  6. Weak chemical bond formed when a hydrogen atom bonds with an oxygen or nitrogen atoms on another polar molecule
  7. Specific regions in which electrons orbit the nucleus of an atom
  8. A pure substance in which all the atoms are the same
  9. Chemical bond formed when metals and non-metals exchange electrons
  10. Chemical bond formed when two non-metals share electrons
  11. Takes both its shape and volume from its container

25 Clues: Chemical with a pH of 7 • When a gas turns into a liquid • Has a definite shape and volume • When a gas turns directly into a solid • When a solid changes directly into a gas • Substances that react during a chemical reaction • Takes both its shape and volume from its container • Electrons found in the outer energy level of an atom • ...

Chemical Reactions Crossword 2025-11-21

Chemical Reactions Crossword crossword puzzle
Across
  1. A chemical reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  2. A change/reaction that releases energy, usually in the form of heat
  3. A change that alters the form or appearance of a material but does not make the material into another substance
  4. A change/reaction that absorbs energy
  5. A chemical reaction that breaks down compounds into simpler products
Down
  1. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
  2. A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  3. A change in which one or more substances combine or break apart to form new substances
  4. A solid that forms from a solution during a chemical reaction
  5. A substance that enters into a chemical reaction
  6. The Law of Conservation of ____, states that the total amount of matter is neither created nor destroyed during any chemical or physical change
  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 a reaction
  8. A substance formed as a result of a chemical reaction

13 Clues: A change/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 from a solution during a chemical reaction • A change/reaction that releases energy, usually in the form of heat • A chemical reaction that breaks down compounds into simpler products • ...

Law of Conservation of Mass 2024-11-11

Law of Conservation of Mass crossword puzzle
Across
  1. - To make equal; in chemistry, ensuring the same number of atoms on both sides of the equation.
  2. - A scientific principle that describes a consistent natural phenomenon.
  3. - The amount of space an object occupies.
  4. - To keep constant; in chemistry, preserving mass during reactions.
  5. - The amount of matter in an object.
  6. - Substance present at the start of a chemical reaction.
  7. - Capacity to do work or produce change, involved in reactions.
  8. - A process in which substances change to form new substances.
  9. - A process of transformation, such as in a chemical or physical state.
  10. - A representation of a chemical reaction using symbols.
  11. - The smallest unit of an element.
Down
  1. - A group of atoms bonded together.
  2. - Anything that has mass and occupies space.
  3. - Describes a system where no matter enters or leaves.
  4. - A connection between atoms in a molecule.
  5. - A substance made of only one kind of atom.
  6. - A small number in a chemical formula indicating the number of atoms in a molecule.
  7. - A distinct form of matter, like solid, liquid, or gas.
  8. - Substance formed as a result of a chemical reaction.
  9. - A number placed in front of a chemical formula to balance an equation.

20 Clues: - The smallest unit of an element. • - A group of atoms bonded together. • - The amount of matter in an object. • - The amount of space an object occupies. • - A connection between atoms in a molecule. • - Anything that has mass and occupies space. • - A substance made of only one kind of atom. • - Describes a system where no matter enters or leaves. • ...

Chemical Reactions 2022-05-23

Chemical Reactions crossword puzzle
Across
  1. a chemical equation that has the same number of atoms of each element on both sides of the reaction arrow
  2. show the number of molecules of each substance needed to balance a chemical reaction
  3. mass in grams of one mole of a substance
  4. a reaction in which one substance is broken down into two or more substances
  5. a reaction in which two or more substances combine to form a new substance
  6. the amount of energy needed to start a chemical reaction
Down
  1. a substance dissolved in water
  2. a reaction that absorbs heat energy
  3. a reaction in which one element replaces another in a compound
  4. the starting substances in a chemical reaction
  5. the ending substances in a chemical reaction
  6. a unit of measurement used to count atoms or molecules, equal to 6.022 x 10^24
  7. a reaction that releases heat energy

13 Clues: a substance dissolved in water • a reaction that absorbs heat energy • a reaction that releases heat energy • mass in grams of one mole of a substance • the ending substances in a chemical reaction • the starting substances in a chemical reaction • the amount of energy needed to start a chemical reaction • a reaction in which one element replaces another in a compound • ...

Unti 2 - Investigating Chemical Reactions 2025-09-12

Unti 2 - Investigating Chemical Reactions crossword puzzle
Across
  1. chemical reaction that plants use to make food
  2. number that shows how many atoms of an element
  3. a pure substance formed by a chemical combination of 2 or more elements in a specific ratio
  4. the amount of each atom type used in a compound
  5. the substances that are formed as a result of a chemical reaction
  6. a/an __________ chemical equation with the same number of atoms of each element on both sides
  7. the coefficient is the large number found at the ________ of a formula
  8. a pure substance made of only one kind of atom
  9. another word for "makes, creates, or produces"
Down
  1. more than one element bonded
  2. a chemical process that will cause reactants to rearrange their bonds and form products
  3. a/an ______________ chemical equation where the atoms in the reactants do not equal the atoms in the products
  4. number that shows how many molecules of a compound
  5. used to identify an element; will always start with 1 capital letter
  6. the subscript is found below and to the _________ of a symbol
  7. smallest particle of an element
  8. the substances that are used in a chemical reaction
  9. combination of more than one chemical symbol used to represent a compound

18 Clues: more than one element bonded • smallest particle of an element • chemical reaction that plants use to make food • number that shows how many atoms of an element • a pure substance made of only one kind of atom • another word for "makes, creates, or produces" • the amount of each atom type used in a compound • number that shows how many molecules of a compound • ...

Phys Sci Crossword 2 2021-02-17

Phys Sci Crossword 2 crossword puzzle
Across
  1. substances consumed in the course of a chemical reaction.
  2. an organic chemical compound composed exclusively of hydrogen and carbon atoms.
  3. The process of conversion of a chemical substance into a solid from a solution by converting the substance into an insoluble form or a super-saturated solution
  4. a chemical breakdown
  5. burning
  6. this is affected by both the atomic number and the distance at which its valence electrons reside from the charged nucleus.
  7. A chemical bond is a lasting attraction between atoms, ions or molecules
Down
  1. any of a material's properties that becomes evident in a chemical reaction
  2. is a process leading to the transformation of one set of substances to another
  3. a pure substance that cannot be broken down into simpler substances by chemical means.
  4. is the smallest unit of ordinary matter that forms a chemical element.
  5. defined by the electron configuration of the system, and by the quantum numbers of each electron contributing to that configuration.
  6. A salt metathesis reaction
  7. are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements.
  8. chemical synthesis is the execution of chemical reactions to form a more complex molecule from chemical precursors
  9. both a property of a physical body and a measure of its resistance to acceleration when a net force is applied.
  10. the atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom.
  11. A measure of how much solute can dissolve in a given solvent at a given temperature
  12. a subatomic particle with a positive electric charge
  13. is the symbolic representation of a chemical reaction in the form of symbols

20 Clues: burning • a chemical breakdown • A salt metathesis reaction • a subatomic particle with a positive electric charge • substances consumed in the course of a chemical reaction. • is the smallest unit of ordinary matter that forms a chemical element. • A chemical bond is a lasting attraction between atoms, ions or molecules • ...

Chemistry 2021-05-25

Chemistry crossword puzzle
Across
  1. The chemical equation type shown by AB = A + B
  2. The ______ table is used to identify elements
  3. The part of an atom with a positive charge
  4. 14.01 is the atomic ____ of nitrogen
  5. Has the chemical formula of Pb
  6. Atomic number of beryllium
  7. General category of an enzyme that increases the rate of a reaction
  8. The chemicals that you start with in a chemical reaction
  9. The numbers that are added in front of a reactant or products when balancing an equation
Down
  1. The part of an atom with a negative charge
  2. AB + CD = AD + CB is a double _________
  3. NaCl is an _____ compound
  4. A ____ model is used to show the configurations of electrons within an atom
  5. Element with chemical symbol of U
  6. When atoms combine to form bigger particles, it is called a _______
  7. The _____ theory is what is used to help determine whether a rate of reaction is increased or decreased
  8. The chemicals that you end with in a chemical reaction
  9. The chemical equation type shown by A + B = AB
  10. Consisting of two atoms. Hydrogen, Oxygen and Nitrogen are examples.
  11. the smallest particle that makes up a substance

20 Clues: NaCl is an _____ compound • Atomic number of beryllium • Has the chemical formula of Pb • Element with chemical symbol of U • 14.01 is the atomic ____ of nitrogen • AB + CD = AD + CB is a double _________ • The part of an atom with a negative charge • The part of an atom with a positive charge • The ______ table is used to identify elements • ...

Jacob Johnston's Crossword 2024-05-15

Jacob Johnston's Crossword crossword puzzle
Across
  1. the ability to do work or cause change
  2. when a substance turns into new substances
  3. a characteristic of a substance that is measurable or observable during a chemical reaction
  4. a pure substance that is formed when two or more different elements combine
  5. a combination of substances that can be physically separated from one another
  6. the substances present before a chemical reaction occurs
  7. the transfer of thermal energy
  8. has mass and takes up some amount of space
  9. two or more atoms joined together
Down
  1. change
  2. a pure substance that cannot be broken down into simpler substances by chemical reactions
  3. a characteristic that can be observed
  4. the smallest unit of an element
  5. the substance that is formed from a chemical reaction
  6. a substance that lowers the rate of a reaction by lowering the amount of energy needed for the reaction
  7. the amount of matter in an object
  8. the ability of molecules of the same substance to stick together
  9. a change in matter that does not affect its chemical composition

18 Clues: change • the transfer of thermal energy • the smallest unit of an element • the amount of matter in an object • two or more atoms joined together • a characteristic that can be observed • the ability to do work or cause change • when a substance turns into new substances • has mass and takes up some amount of space • the substance that is formed from a chemical reaction • ...

Chapter 10 Science 2024-12-02

Chapter 10 Science crossword puzzle
Across
  1. reaction ( any chemical reaction that absorbs heat from its environment.)
  2. (a mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.)
  3. (the basic unit of a chemical element.)
  4. (a thing that inhibits someone or something.)
  5. reaction (a chemical reaction that releases energy by light or heat.)
  6. (the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and how they interact, combine, and change; and the use of these processes to form new substances.)
  7. Change (a type of change where the physical properties of matter change.)
  8. (a substance made by mixing other substances.)
  9. (a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.)
  10. (cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.)
  11. (a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component. The solvent)
  12. (a numerical or constant quantity placed before and multiplied the variable in an algebraic)
  13. equation (a symbolic representation of a chemical reaction in the form of symbols and formulae.)
  14. (the state or process of rotting; decay.)
Down
  1. (the combination of ideas to form a theory or system.)
  2. (an article or substance that is manufactured or refined for sale.)
  3. (a substance that takes part in and undergoes change during a reaction.)
  4. (a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.)
  5. (a thing that is composed of two or more separate elements; a mixture.)
  6. of mass (a principle stating that mass cannot be created or destroyed.)
  7. (the action or process of replacing someone or something.)
  8. (the process of burning something.)
  9. bond (a connection between two surfaces or objects that have been joined together, especially using an adhesive substance, heat, or pressure.)
  10. (a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.)
  11. formula (a mathematical relationship or rule expressed in symbols.)
  12. (of a letter, figure, or symbol) written or printed below the line.)
  13. (material such as coal, gas, or oil that is burned to produce heat or power.)
  14. Change (a change of materials into another, new materials with different properties and one or more than one new substance are formed.)
  15. (a part or aspect of something abstract, especially one that is essential or characteristic.)
  16. energy (the minimum quantity of energy that the reacting species must possess to undergo a specified reaction.)

30 Clues: (the process of burning something.) • (the basic unit of a chemical element.) • (the state or process of rotting; decay.) • (a thing that inhibits someone or something.) • (a substance made by mixing other substances.) • (the combination of ideas to form a theory or system.) • (the action or process of replacing someone or something.) • ...

crossword 2024-12-10

crossword crossword puzzle
Across
  1. a substance or molecule that participates in a chemical reaction
  2. A substance or molecule that forms in a chemical reaction.
  3. a dissolved substance.
  4. a dissolved substance
  5. the basic unit of a chemical element.
  6. reaction- A process that occurs when two or more molecule interact to form new molecules
  7. water or the amount of water that falls to the earth as hail, mist, rain, sleet, or snow.
Down
  1. Known as the "Middle life" around 252 to 66 million years ago.
  2. the mostly solid bulk of Earth's interior.
  3. a type of mixture involving two or more substances.
  4. A chemical reaction that absorbs energy from it's enviorment
  5. reaction- A chemical reaction that releases thermal energy.
  6. The central or innermost portion of the Earth, lying below the mantle and probably consisting of iron and nickel.
  7. two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance
  8. any of the large bodies that revolve around the Sun in the solar system

15 Clues: a dissolved substance • a dissolved substance. • the basic unit of a chemical element. • the mostly solid bulk of Earth's interior. • a type of mixture involving two or more substances. • A substance or molecule that forms in a chemical reaction. • reaction- A chemical reaction that releases thermal energy. • A chemical reaction that absorbs energy from it's enviorment • ...

Stoichiometry 2026-03-13

Stoichiometry crossword puzzle
Across
  1. quantity of product you expect stoichiometrically from a chemical reaction
  2. number of units in one mole of any substance
  3. way of analysis/solving problems that involves aligning the units of measurements
  4. reactant that gets consumed first in a chemical reaction
  5. ratio of the actual yield to the theoretical yield
Down
  1. ratio between the amounts in moles of any two compounds involved in a balanced chemical reaction
  2. The mass of one mole of a substance.
  3. reactants that are not used up when the reaction is finished
  4. moles in 2.41 x 10^24 molecules of chlorine
  5. calculation of quantities in a chemical reaction based on a balanced equation
  6. number of moles in 107.87 grams of silver
  7. number of moles in 28.02 grams of nitrogen
  8. grams in three moles of hydrogen
  9. moles in 3.01 x 10^24 molecules of oxygen
  10. quantity of a product found to be formed in a chemical reaction

15 Clues: grams in three moles of hydrogen • The mass of one mole of a substance. • number of moles in 107.87 grams of silver • moles in 3.01 x 10^24 molecules of oxygen • number of moles in 28.02 grams of nitrogen • moles in 2.41 x 10^24 molecules of chlorine • number of units in one mole of any substance • ratio of the actual yield to the theoretical yield • ...

chemistry 2025-04-24

chemistry crossword puzzle
Across
  1. when molecules stick together
  2. the appearance change in a substance
  3. the low energy compared to products.
  4. the same molecules
  5. the amount of matter
  6. the substance changing the speed in a reaction
  7. the result of a chemical reaction.
  8. the amount of space taken up by matter.
  9. matter that cant decompose
  10. a person,place,or thing
  11. the study of mattter
  12. the transfer in energy
  13. the interactions in matter
Down
  1. the capacity to work
  2. to release energy
  3. the change in a substance
  4. a measured substance
  5. the properties in a chemical after the reaction
  6. very small groups of balls in matter.
  7. the mix of chemicals
  8. the measure in energy.
  9. the building block of matter
  10. a material undergoing a chemical change

23 Clues: to release energy • the same molecules • the capacity to work • a measured substance • the mix of chemicals • the amount of matter • the study of mattter • the measure in energy. • the transfer in energy • a person,place,or thing • the change in a substance • matter that cant decompose • the interactions in matter • the building block of matter • when molecules stick together • ...

abraham 2020-01-17

abraham crossword puzzle
Across
  1. a substance that decreases the rate of or stops completely a chemical reaction.
  2. a measure of the amount of dissolved substance contained per unit of volume.
  3. a principle stating that if a constraint (such as a change in pressure, temperature, or concentration of a reactant) is applied to a system in equilibrium, the equilibrium will shift so as to tend to counteract the effect of the constraint.
  4. rate of a chemical reaction is defined as the change in the concentration of a reactant or a product over the change in time,
  5. that is a measure of the energy that is not available for work
  6. a measure of the warmth or coldness of an object or substance
  7. substance obtained from another substance through chemical change.
  8. can go in both directions; reactants can turn into products, and products can turn back into reactants
  9. any substance that undergoes a chemical change in a given reaction.
  10. chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.
  11. a type of chemical reaction in which one reactant yields two or more products.
  12. ubstance or mixture of compounds that, added to a solution, is capable of neutralizing both acids and bases without appreciably changing the original acidity or alkalinity of the solution.
Down
  1. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
  2. the surface area of a substance generally increases the rate of a chemical reaction.
  3. an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
  4. a reaction in which one element is substituted for another element in a compound.
  5. the forming or building of a more complex substance or compound from elements or simpler compounds.
  6. a substance that causes or accelerates a chemical reaction without itself being affected.
  7. a force exerted by the substance per unit area on another substance
  8. the structure that results in the maximum energy point along the reaction path.
  9. hemical combination attended by production of heat and light.
  10. the loss of electrons during a reaction by a molecule, atom or ion
  11. a thermodynamic property of a system. It is the sum of the internal energy added to the product of the pressure and volume of the system

23 Clues: a measure of the warmth or coldness of an object or substance • hemical combination attended by production of heat and light. • that is a measure of the energy that is not available for work • substance obtained from another substance through chemical change. • the loss of electrons during a reaction by a molecule, atom or ion • ...

Chemistry 2024-10-21

Chemistry crossword puzzle
Across
  1. - A substance that accepts protons (H⁺ ions) in a solution and has a pH greater than 7.
  2. - A distinct form of matter, such as solid, liquid, or gas, characterized by uniform properties.
  3. - A chemical reaction that combines two or more simple substances to form a more complex product.
  4. - A substance that dissolves a solute, resulting in a solution, commonly a liquid.
  5. - The amount of solute present in a given volume of solution, often expressed in molarity.
  6. Table - A tabular arrangement of chemical elements organized by increasing atomic number and similar properties.
  7. Reaction - A process that involves the transformation of one set of chemical substances into another.
  8. - A measure of the average kinetic energy of the particles in a substance, affecting reaction rates.
  9. Rate - The speed at which a chemical reaction occurs, influenced by factors such as temperature and concentration.
  10. Bond - A chemical bond formed through the electrostatic attraction between oppositely charged ions.
  11. - A chemical process in which an atom or molecule loses electrons, often associated with an increase in oxidation state.
  12. Chemistry - The branch of chemistry that studies the structure, properties, and reactions of carbon-containing compounds.
  13. - A substance that conducts electricity when dissolved in water or molten, due to the presence of ions.
  14. - A metabolic process that converts sugar to acids, gases, or alcohol, often used in food production.
  15. - The substance that is dissolved in a solvent to form a solution.
  16. - A substance formed when two or more elements are chemically bonded together in fixed proportions.
Down
  1. - A pure substance that cannot be broken down into simpler substances and is made up of only one type of atom.
  2. - The calculation of reactants and products in chemical reactions based on the conservation of mass.
  3. - A type of chemical reaction where a compound breaks down into simpler substances.
  4. - An organic compound composed exclusively of hydrogen and carbon atoms, foundational in organic chemistry.
  5. - A mixture of two or more metals, or a metal and another element, designed to enhance properties.
  6. - A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14.
  7. - A solid formed from a solution during a chemical reaction, often resulting from the combination of ions.
  8. - An atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.
  9. - The smallest unit of matter that retains the properties of an element.
  10. - A substance that donates protons (H⁺ ions) in a solution and has a pH less than 7.
  11. - A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.
  12. Bond - A type of chemical bond formed when two atoms share one or more pairs of electrons.
  13. - A substance that increases the rate of a chemical reaction without being consumed in the process.
  14. - A chemical reaction that involves the gain of electrons by an atom or molecule, resulting in a decrease in oxidation state.

30 Clues: - The substance that is dissolved in a solvent to form a solution. • - The smallest unit of matter that retains the properties of an element. • - A substance that dissolves a solute, resulting in a solution, commonly a liquid. • - A type of chemical reaction where a compound breaks down into simpler substances. • ...

REACTIONS TYPE- Eithihaas 2024-05-02

REACTIONS TYPE- Eithihaas crossword puzzle
Across
  1. A reaction that releases heat to its surroundings.
  2. The gain of electrons by a substance during a reaction.
  3. The loss of electrons by a substance during a reaction.
  4. A reaction where an element replaces another element in a compound.
  5. A reaction where two soluble ionic compounds in a solution combine to form an insoluble product.
  6. A reaction where one substance loses electrons (oxidation) and another gains electrons (reduction).
  7. A reaction that absorbs heat from its surroundings.
Down
  1. A substance that undergoes change in a chemical reaction.
  2. A reaction where a single compound breaks down into two or more simpler substances.
  3. Displacement Reaction: A reaction where ions of two compounds exchange places to form two new compounds.
  4. An equation in which the number of atoms of each element is the same on both sides.
  5. A substance formed as a result of a chemical reaction.
  6. The development of unpleasant odors and flavors in fats and oils due to oxidation.
  7. The process of gradual destruction of materials, especially metals, due to chemical reactions with their environment.
  8. A chemical reaction where two or more substances combine to form a single product.

15 Clues: A reaction that releases heat to its surroundings. • A reaction that absorbs heat from its surroundings. • A substance formed as a result of a chemical reaction. • The gain of electrons by a substance during a reaction. • The loss of electrons by a substance during a reaction. • A substance that undergoes change in a chemical reaction. • ...

Organic Reactions 2022-02-18

Organic Reactions crossword puzzle
Across
  1. Group atom or group of atoms that are able to break away from a molecule with a lone pair
  2. an ion with a positively-charged carbon atom.
  3. anions larger the atom, and the further the electrons from the nucleus, the more polarisable
  4. The starting material (other than enzyme or coenzyme) for an enzymatic chemical reaction.
  5. Organic reaction in which two substituents are removed from a molecule in either a one- or two-step mechanism
  6. stabilising interaction that results from the interaction of the electrons in a σ-bond (usually C-H or C-C) with an adjacent
  7. Substrate a carbon attached to THREE other carbons
  8. Replacement of one group by another
  9. Agent compounds that work by adding an alkyl group to the guanine base of the DNA molecule
Down
  1. Reaction a chemical reaction in which the solvent, such as water or alcohol
  2. substrate a carbon attached to only ONE other carbon
  3. Substrate a carbon attached to only TWO other carbons
  4. An atom or molecule that in chemical reaction seeks a positive centre
  5. Reaction chemical reactions in which an atom or group of atoms is added to a molecule
  6. Inversion inversion of a stereogenic center in a chiral molecule in a chemical reaction
  7. Relative spatial arrangement of atoms that form the structure of molecules
  8. Reaction an atom, molecule, or ion that has an unpaired valence electron
  9. to or involving a single molecule or single molecular species
  10. any process by which electrically neutral atoms or molecules are converted to electrically charged atoms or molecules (ions)
  11. substance that dissolves a solute, resulting in a solution

20 Clues: Replacement of one group by another • an ion with a positively-charged carbon atom. • Substrate a carbon attached to THREE other carbons • substrate a carbon attached to only ONE other carbon • Substrate a carbon attached to only TWO other carbons • substance that dissolves a solute, resulting in a solution • ...

Chemical reactions 2023-11-14

Chemical reactions crossword puzzle
Across
  1. when a compound breaks down in to two different substances
  2. is when matter does not enter or leave
  3. is when energy released as the products form is greater than the energy required to break the bonds of the reactions
  4. the Law states that during a chemical reaction matter is not created or destroyed
  5. a change that alters the form or appearance of a substance
  6. the new substances that form
  7. substances that undergo the chemical changes
  8. when two or more elements combine to make a more complex substance
  9. is a change in matter that produces one or more substances
Down
  1. more energy is required to break bonds of the reactions than his released by the formation of the products
  2. increases the reaction rate by lowering the activation energy needed
  3. matter can enter from or escape to the surroundings
  4. mixing of two liquids may form
  5. when one element replaces another in a compound
  6. is the amount of a substance in a given volume
  7. a material used to describe the rate of a chemical reaction
  8. the minimum amount of energy to start a chemical
  9. biological catalysts
  10. is away to show a chemical reaction using symbols instead of words
  11. a number placed in front of a chemical formula in an equation

20 Clues: biological catalysts • the new substances that form • mixing of two liquids may form • is when matter does not enter or leave • substances that undergo the chemical changes • is the amount of a substance in a given volume • when one element replaces another in a compound • the minimum amount of energy to start a chemical • ...

Chapter 12 Vocabulary Chemical Reactions & Equations 2024-03-22

Chapter 12 Vocabulary Chemical Reactions & Equations crossword puzzle
Across
  1. process in which atoms of one or more substances rearrange to form one or more new substances
  2. number placed in front of an element symbol or chemical formula in an equation
  3. states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction
  4. minimum amount of energy needed to start a chemical reaction
  5. starting substance in a chemical reaction
  6. substance that slows down, or even stops, a chemical reaction
Down
  1. chemical reactions that absorb thermal energy enzyme catalyst that speeds up chemical reactions in living cells
  2. starting substance in a chemical reaction
  3. description of a reaction using element symbols and chemical formulas
  4. new substance produced by a chemical reaction
  5. chemical reactions that release thermal energy
  6. substance that increases the reaction rate by lowering the activation energy of a reaction

12 Clues: starting substance in a chemical reaction • starting substance in a chemical reaction • new substance produced by a chemical reaction • chemical reactions that release thermal energy • minimum amount of energy needed to start a chemical reaction • substance that slows down, or even stops, a chemical reaction • ...

TYPES OF CHEMICAL REACTION CHEMICAL CROSSFIRE 2025-04-28

TYPES OF CHEMICAL REACTION CHEMICAL CROSSFIRE crossword puzzle
Across
  1. Zinc and Lead are more reactive elements than _________.
  2. Copper gets covered with a _________ coating on exposure to the moist air .
  3. A reaction in which when two or more substances combine to form a single product.
  4. AB + C gives A + BC , which type of reaction is this .
  5. Reaction that are opposite to Combination reactions.
  6. Egg, chalk, marble, and this rock are made of calcium carbonate.
  7. Substance that speeds up a chemical reaction without being consumed.
  8. A reaction where there is gain of hydrogen and electrons .
  9. Respiration is an example of which reaction in which energy is produced.
  10. A substance “X” used in for whitewashing and to give a shiny finish to the walls .
Down
  1. A Reaction when two compound exchange ions .
  2. Substance that gains electrons and causes oxidation in a reaction.
  3. Reactions in which insoluble salts is produced .
  4. When Quick lime reacts with Water it forms.
  5. A side where reduction occurs in the electrolysis of water .
  6. When Lead nitrate reacts with Lead oxide in heat it gives out nitrogen dioxide and oxygen. What is the color of nitrogen dioxide fumes .
  7. Reaction used in the black and white photography .
  8. The reaction between acid and base to form salt and water .
  9. Reaction in which energy is absorbed.
  10. A reaction when Oxidation and Reduction reactions occur together it is known as ?
  11. Ferrous Sulphate crystals lose water when _________.

21 Clues: Reaction in which energy is absorbed. • When Quick lime reacts with Water it forms. • A Reaction when two compound exchange ions . • Reactions in which insoluble salts is produced . • Reaction used in the black and white photography . • Reaction that are opposite to Combination reactions. • Ferrous Sulphate crystals lose water when _________. • ...

Ayush V 2024-05-01

Ayush V crossword puzzle
Across
  1. A reaction in which a substance combines with oxygen, releasing energy and often.
  2. A single compound breaks down into two or more simpler substances.
  3. A reaction where parts of two ionic compounds are exchanged.
  4. A substance that speeds up a chemical reaction without being consumed.
  5. The process by which metals are oxidized by substances in their environment.
  6. A reaction that involves the transfer of electrons between two species.
Down
  1. A reaction where one element replaces another in a compound.
  2. A reaction that involves the transfer of a proton from an acid to a base.
  3. A reaction that releases heat to the surroundings.
  4. A reaction where two or more substances combine to form a single product.
  5. A chemical change that typically occurs in fats and oils when they are exposed to air, leading to unpleasant smells and tastes
  6. A process where a substance loses electrons.
  7. A reaction that absorbs heat from the surroundings.
  8. A technique that uses a direct electric current to drive an otherwise non-spontaneous chemical reaction.
  9. A solid that forms from a solution during a chemical reaction.

15 Clues: A process where a substance loses electrons. • A reaction that releases heat to the surroundings. • A reaction that absorbs heat from the surroundings. • A reaction where one element replaces another in a compound. • A reaction where parts of two ionic compounds are exchanged. • A solid that forms from a solution during a chemical reaction. • ...

Chemical Reactions 2018-11-02

Chemical Reactions crossword puzzle
Across
  1. the loss of electrons from the atoms of a substance on a chemical reaction.
  2. reaction in which 2 ionic compounds in solution are combined, can produce a precipitate, water, or a gas.
  3. the gain of electrons by the atoms on a chemical reaction
  4. In a chemical reaction, the substance that reacts
  5. Chemical reaction that requires thermal energy in order to proceed.
  6. Number in a chemical equation that represents the number of units of each substance taking part in a chemical reaction.
Down
  1. A type of chemical reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light.
  2. Chemical reaction in which 2 or more substances combine to form a different substance.
  3. Chemical reaction in which one substance breaks down into 2 or more substances.
  4. Chemical reaction in which energy is primarily given off in the form of thermal energy
  5. In a chemical reaction, the new substance or substances formed.

11 Clues: In a chemical reaction, the substance that reacts • the gain of electrons by the atoms on a chemical reaction • In a chemical reaction, the new substance or substances formed. • Chemical reaction that requires thermal energy in order to proceed. • the loss of electrons from the atoms of a substance on a chemical reaction. • ...

Chemistry Crossword 2020-06-05

Chemistry Crossword crossword puzzle
Across
  1. a reaction in which the atoms of one element replace the atoms of another element in a compound
  2. a substance that takes part in/undergoes change during a chemical reaction
  3. The mass in grams of a pure mole of any substance
  4. a solution containing one or more solutes is called a(n) ------- solution
  5. the ratio of the actual yield to the theoretical yield
  6. formed from a chemical reaction
  7. the study of quantitive relationshipsbetween the amounts of reactants and products
  8. a formula that a chemical reaction is written in which doesn't show conservation of mass
  9. The maximum of product that can be produced by a chemical reaction
Down
  1. the reactant which limits the extent of a reaction
  2. a reaction where oxygen combines with a substance and releases energy
  3. a compound breaking down into two more fragments is known as -------------
  4. the ratio between the numbers of moles of any two substances in a chemical equation
  5. 6.02 x 10^23
  6. The number of carbon atoms in twelve grams of pure carbon-12

15 Clues: 6.02 x 10^23 • formed from a chemical reaction • The mass in grams of a pure mole of any substance • the reactant which limits the extent of a reaction • the ratio of the actual yield to the theoretical yield • The number of carbon atoms in twelve grams of pure carbon-12 • The maximum of product that can be produced by a chemical reaction • ...

Chemical Reactions crossword 2023-11-13

Chemical Reactions crossword crossword puzzle
Across
  1. a state in which forward and reverse reactions or processes proceed at equal rates
  2. A type of lettering form written lower than the things around it. In chemical formulas the number of atoms in a molecule is written in this manner
  3. Is a substance that is formed as the result of a chemical reaction.
  4. Mass in grams of one mole of a substance
  5. Gain of electrons
  6. A process in which one or more substances, the reactants, are converted to one or more different substances called the products
  7. A substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme.
  8. Are those which absorb energy from the surroundings and result in a net decrease in temperature
  9. A representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product.
  10. The amount of a substance that contains 6.02 x 10^23 particles of that substance
Down
  1. The speed at which reactants are converted in products
  2. is a chemical equation with the same number of atoms of each element on both sides of the arrow
  3. is the number in front of the formula, that is related to the properties of the products. For example 2 H2O means there is two molecules of water
  4. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  5. A substance that takes part in and undergoes change during a reaction
  6. for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity cannot be added or removed.
  7. A chemical reaction that releases energy in the form of light or heat
  8. Loss of Electrons
  9. A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction

19 Clues: Gain of electrons • Loss of Electrons • Mass in grams of one mole of a substance • The speed at which reactants are converted in products • Is a substance that is formed as the result of a chemical reaction. • A substance that takes part in and undergoes change during a reaction • A chemical reaction that releases energy in the form of light or heat • ...

Chemical Reactions crossword 2023-11-13

Chemical Reactions crossword crossword puzzle
Across
  1. a state in which forward and reverse reactions or processes proceed at equal rates
  2. A type of lettering form written lower than the things around it. In chemical formulas the number of atoms in a molecule is written in this manner
  3. Is a substance that is formed as the result of a chemical reaction.
  4. Mass in grams of one mole of a substance
  5. Gain of electrons
  6. A process in which one or more substances, the reactants, are converted to one or more different substances called the products
  7. A substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme.
  8. Are those which absorb energy from the surroundings and result in a net decrease in temperature
  9. A representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product.
  10. The amount of a substance that contains 6.02 x 1023 particles of that substance
Down
  1. The speed at which reactants are converted in products
  2. is a chemical equation with the same number of atoms of each element on both sides of the arrow
  3. is the number in front of the formula, that is related to the properties of the products. For example 2 H2O means there is two molecules of water
  4. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  5. A substance that takes part in and undergoes change during a reaction
  6. for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity cannot be added or removed.
  7. A chemical reaction that releases energy in the form of light or heat
  8. Loss of Electrons
  9. A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction

19 Clues: Gain of electrons • Loss of Electrons • Mass in grams of one mole of a substance • The speed at which reactants are converted in products • Is a substance that is formed as the result of a chemical reaction. • A substance that takes part in and undergoes change during a reaction • A chemical reaction that releases energy in the form of light or heat • ...

KINETICS & HESS'S LAW CROSSWORD 2022-02-04

KINETICS & HESS'S LAW CROSSWORD crossword puzzle
Across
  1. amount of heat released or absorbed by a system during a process at constant pressure
  2. measure of how hot or cold something is
  3. forming reactants from products
  4. study of reaction rates
  5. chemical substance produced during the conversion of some reactant to a product
  6. changes the rate of a chemical reaction without being consumed
  7. shows energy changes vs the progress of a reaction
Down
  1. change in concentration of a reactant or product with time
  2. forming products from reactants
  3. heat energy is absorbed on the product side of the reaction
  4. heat energy is released on the product side of the reaction
  5. overall enthalpy equal to sum of the enthalpy changes
  6. factor that affects reaction rate
  7. minimum amount of energy required to start achemical reaction
  8. slows down or prevent a chemical reaction
  9. stirring

16 Clues: stirring • study of reaction rates • forming reactants from products • forming products from reactants • factor that affects reaction rate • measure of how hot or cold something is • slows down or prevent a chemical reaction • shows energy changes vs the progress of a reaction • overall enthalpy equal to sum of the enthalpy changes • ...

Vocabulary Project 2018-10-17

Vocabulary Project crossword puzzle
Across
  1. Any property having to do with the chemical makeup of a substance.
  2. Accompanied by the release of heat.
  3. Changes to a substance that include color change, temperature change, odor change, formation of gas, and formation of a percipient.
  4. Changes affecting the appearance of a substance, but not the chemical composition.
  5. A substance made by mixing other substances together and that can be easily taken apart.
  6. A change that affects a substances chemical composition.
  7. to be deposited in a solid form from a solution.
  8. a substance produced during a natural or chemical process.
Down
  1. An equation of a chemical reaction in which the number of atoms of each element are the same.
  2. A substance that takes part in and undergoes change during a reaction.
  3. Any property that is measurable, whose value describes a state of a physical system.
  4. Mass in an isolated system is neither created nor destroyed.
  5. The degree of compactness of a substance.
  6. symbolic representation of a chemical reaction.
  7. A numerical at constant quality placed before an equation.
  8. A process that involves rearrangement of the molecular or ionic structure of a substance.
  9. Accompanied by requiring the absorption of heat.
  10. A type of lettering form that is written lower than the other things around it.
  11. One of more than a hundred substances that can't be changed or broken.
  12. A substance formed of two or more elements chemically united in fixed proportions.

20 Clues: Accompanied by the release of heat. • The degree of compactness of a substance. • symbolic representation of a chemical reaction. • Accompanied by requiring the absorption of heat. • to be deposited in a solid form from a solution. • A change that affects a substances chemical composition. • A numerical at constant quality placed before an equation. • ...

Reaction Rate - Petrochemicals 2024-05-20

Reaction Rate - Petrochemicals crossword puzzle
Across
  1. A type of aromatic hydrocarbon used in the production of plastics.
  2. Facility where crude oil is processed to produce various petroleum products.
  3. Process in which substances chemically transform into new substances.
  4. A colorless, aromatic hydrocarbon used in the production of various chemicals.
  5. Process of chemically bonding monomers together to form a polymer.
  6. Amount of product obtained from a chemical reaction or process.
  7. Process of changing one substance into another through chemical reactions.
  8. Substance that speeds up a chemical reaction without being consumed itself.
Down
  1. Common plastic polymer used in packaging and construction.
  2. Chemical compound derived from petroleum or natural gas.
  3. Study of the rates of chemical reactions.
  4. Measure of how well a reaction or process utilizes resources.
  5. Process of breaking down large hydrocarbon molecules into smaller ones.
  6. Act of making something as effective or functional as possible.
  7. Substance that participates in a chemical reaction.

15 Clues: Study of the rates of chemical reactions. • Substance that participates in a chemical reaction. • Chemical compound derived from petroleum or natural gas. • Common plastic polymer used in packaging and construction. • Measure of how well a reaction or process utilizes resources. • Act of making something as effective or functional as possible. • ...

Stoichiometry 2024-04-01

Stoichiometry crossword puzzle
Across
  1. ratio: The ratio of the number of moles of one substance to the number of moles of another substance in a balanced chemical equation.
  2. reactant: The reactant that is not completely consumed in a chemical reaction, remaining after the limiting reactant is used up.
  3. mass: The mass of one mole of a substance, usually expressed in grams per mole (g/mol).
  4. equation: A symbolic representation of a chemical reaction using chemical formulas and symbols.
  5. Substances formed as a result of a chemical reaction.
  6. A number written slightly below and to the right of an element's symbol in a chemical formula, indicating the number of atoms of that element in a molecule.
  7. number: The number of atoms, molecules, or formula units in one mole of a substance, approximately
Down
  1. equation: An equation representing a chemical reaction with an equal number of atoms of each element on both sides.
  2. A unit used to measure the amount of substance, equal to Avogadro's number of atoms, molecules, or formula units.
  3. The quantitative relationship between reactants and products in a chemical reaction.
  4. reaction: A process in which one or more substances are converted into different substances.
  5. Substances that undergo a chemical change in a reaction.
  6. reactant: The reactant that is completely consumed in a chemical reaction, limiting the amount of product that can be formed.
  7. ratio: The ratio of the masses of one substance to the mass of another substance in a chemical reaction.
  8. Numbers in a balanced chemical equation representing the relative amounts of reactants and products.

15 Clues: Substances formed as a result of a chemical reaction. • Substances that undergo a chemical change in a reaction. • The quantitative relationship between reactants and products in a chemical reaction. • mass: The mass of one mole of a substance, usually expressed in grams per mole (g/mol). • ...

Types Of Chemical Reactions 2024-04-30

Types Of Chemical Reactions crossword puzzle
Across
  1. Sunlight plays a crucial role in triggering this type of chemical reaction, often seen in photosynthesis.
  2. Breaking down complex molecules like carbohydrates into simpler ones involves this type of reaction.
  3. Rusting of iron is a common example of this type of chemical reaction.
  4. In this type of reaction, a more reactive metal displaces a less reactive metal from a compound.
  5. Enzymes in biological systems often facilitate reactions through this process.
  6. Yeast utilizes this process to produce ethanol in the absence of oxygen.
  7. Rotting of organic matter is an example of this type of chemical reaction.
  8. Adding an acid to a base results in this type of reaction, often used to create water.
Down
  1. This process is essential in cement formation and some chemical weathering reactions.
  2. This type of reaction is essential in the formation of plastics and synthetic fibers.
  3. This type of reaction is responsible for the burning of fuels.
  4. The opposite of decomposition, this reaction builds larger molecules from smaller ones.
  5. The opposite of oxidation, it involves the removal of oxygen or addition of hydrogen.
  6. The pH scale measures the strength of substances involved in this type of chemical reaction.
  7. When two solutions are mixed and a solid substance falls out of solution, this reaction occurs.

15 Clues: This type of reaction is responsible for the burning of fuels. • Rusting of iron is a common example of this type of chemical reaction. • Yeast utilizes this process to produce ethanol in the absence of oxygen. • Rotting of organic matter is an example of this type of chemical reaction. • ...

Chemistry Crossword Fun Fun Power Hour (Wacky!!) 2021-07-25

Chemistry Crossword Fun Fun Power Hour (Wacky!!) crossword puzzle
Across
  1. ions that do not react in a chemical equation
  2. Low pH, donates protons
  3. indicates the acid will have the prefix hydro- and suffix -ic
  4. placed on the left of a chemical equation; the substances that react with one another to produce new substances
  5. a neutral substance made up of balanced positive and negative ions
  6. created in neutralization reaction; can help lower the acidity of a substance
  7. placed on the right of a chemical equation; the results of a chemical reaction, and the sum total of the reactants
  8. High pH, accepts protons
Down
  1. H3O+; denotes basicity
  2. indicates the acid will have only the -ic suffix
  3. a positively charged ion
  4. when a base and acid react to form a salt and water
  5. OH-; denotes acidity
  6. the written form of a chemical reaction; demonstrates how reactants combine to form products.
  7. pH of 7
  8. A substance with another substance finely dissolved in it; an example would be saltwater
  9. a negatively charged ion
  10. indicates the acid will have the unique -ous suffix
  11. balancing the states of acidity and basicity; the constant state of chemical processes being "centered"
  12. Scale on which acidity or basicity is measured; measures concentration of H+ and OH- ions

20 Clues: pH of 7 • OH-; denotes acidity • H3O+; denotes basicity • Low pH, donates protons • a positively charged ion • a negatively charged ion • High pH, accepts protons • ions that do not react in a chemical equation • indicates the acid will have only the -ic suffix • when a base and acid react to form a salt and water • indicates the acid will have the unique -ous suffix • ...

Properties & Reactions X Word 2018-11-07

Properties & Reactions X Word crossword puzzle
Across
  1. mass divided by volume
  2. a change that converts an existing substance into a new substance
  3. the ability of a substance to be dissolved in a liquid
  4. a change in matter that does not affect its chemical composition
  5. The formation of a ___ can indicate a chemical reaction
  6. electrical and thermal ___ are physical properties
  7. process that absorbs energy
Down
  1. the sudden release of smoke or ___ can indicate a chemical reaction
  2. a chemical reaction in which oxygen combines with another substance; for example, when metal rusts
  3. the ability of a material to be stretched into a wire without breaking
  4. process that releases energy
  5. the ability of a material to be beaten into a thin sheet or to be shaped without breaking
  6. a sudden increase or decrease in ___ can indicate a chemical reaction
  7. a change in ___ can indicate a chemical reaction

14 Clues: mass divided by volume • process that absorbs energy • process that releases energy • a change in ___ can indicate a chemical reaction • electrical and thermal ___ are physical properties • the ability of a substance to be dissolved in a liquid • The formation of a ___ can indicate a chemical reaction • a change in matter that does not affect its chemical composition • ...

Chapter 2 crossword 2023-09-21

Chapter 2 crossword crossword puzzle
Across
  1. starting materials in a chemical reaction
  2. basic unit of an element
  3. the force that holds atoms together in a chemical compound
  4. Chemical changes occur when a substance combines with another to form a new substance
  5. a process that occurs when molecules move from an area of high concentration to an area of low concentration
  6. a process in which a solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules by coming into contact
  7. A base is a substance that reacts with an acid in an acid-base reaction
  8. a broad group of organic compounds which include fats
  9. In science, a product is a substance that is formed as the result of a chemical reaction
  10. a thermodynamic quantity representing the unavailability of a system's thermal energy
  11. Physical changes are changes affecting the form of a chemical substance
  12. measure of hotness or coldness
  13. any of a large group of organic compounds that includes sugars, starch, and cellulose, containing hydrogen and oxygen
  14. proteins that act as biological catalysts by accelerating chemical reactions
  15. a group of two or more atoms that are held together by chemical bonds
  16. a simple organic compound containing both a carboxyl
Down
  1. A chemical substance composed of many identical molecules
  2. sticking or attaching to something
  3. Delays, slows or prevents a chemical reaction
  4. cohesion is the act or state of sticking together1234
  5. An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons
  6. a substance that increases the rate of a chemical reaction
  7. a pure substance that cannot be broken down
  8. a sweet crystalline substance obtained from various plants
  9. energy is the ability to do work or heat an object
  10. such as the pole of a magnet or one of the electrodes of an electrolytic cell
  11. substances that contain carbon
  12. substance that takes up space and has mass
  13. basic building block of nucleic acids

29 Clues: basic unit of an element • substances that contain carbon • measure of hotness or coldness • sticking or attaching to something • basic building block of nucleic acids • starting materials in a chemical reaction • substance that takes up space and has mass • a pure substance that cannot be broken down • Delays, slows or prevents a chemical reaction • ...

Chemistry Crossword EDITED VER 2017-11-14

Chemistry Crossword EDITED VER crossword puzzle
Across
  1. number that represents the number of atoms in an element.
  2. Substances that helps speed up a reaction
  3. anything that has mass and occupies space
  4. Ability to conduct electricity/heat energy
  5. Cloudy mixture that can be separated
  6. Material made of 2 or more elements
  7. Compound made of Metal+Non-Metal
  8. Mass in given volume
  9. Starting materials of a reaction
  10. Slow chemical change when oxygen reacts with a metal
  11. Compound made of Non-Metal+Non-Metal
  12. To chemically absorb heat
  13. When oxygen reacts w/ a substance to form a new substance.
Down
  1. Chemical change in your body that takes in Oxygen, and gives out Carbon Dioxide.
  2. ability to pound into sheets
  3. Organic substances that helps speed up a reaction
  4. Ability to dissolve.
  5. Compounds/Materials made from chemical reaction
  6. Chemical change of a solid to gas
  7. Chemical change of a gas to solid
  8. Ability to thin into wire.
  9. To chemically release heat
  10. Any pure substance on the Periodic Table of Elements
  11. Letters/Numbers to indicate what elements are in a compound.
  12. Shine of substance.

25 Clues: Shine of substance. • Ability to dissolve. • Mass in given volume • To chemically absorb heat • Ability to thin into wire. • To chemically release heat • ability to pound into sheets • Compound made of Metal+Non-Metal • Starting materials of a reaction • Chemical change of a solid to gas • Chemical change of a gas to solid • Material made of 2 or more elements • ...

vocab crossword 2025-09-19

vocab crossword crossword puzzle
Across
  1. - molecule composed of many monomers
  2. - attraction between molecules of the same substance
  3. - reactant of an enzyme catalyzed reaction
  4. - compound that prevents sharp sudden changes in PH
  5. - elements or compounds that enter into a chemical reaction to begin
  6. - protein catalyst that speeds up the rate of specific biological reactions
  7. - compound that forms hydrogen ions in a solution with a PH lower then 7
  8. - pure substance that consists entirely of 1 type of atom
  9. energy - energy input that is needed for a reaction to begin
Down
  1. - force of attraction between different kinds of molecules
  2. - elements or compounds produced by chemical reactions
  3. acid - macromolecule's containing hydrogen, oxygen, nitrogen, carbon and phosphorus
  4. - a small chemical unit that makes up polymer
  5. - substance that speeds up the rate of a chemical reaction
  6. - type of mixture where all of the compoints are evenly distributed
  7. - basic unit of a chemical element
  8. - mixture of water and a non-dissolved material
  9. - atom that has a positive or negative charge
  10. acid - compound with an amino acid group on 1 end
  11. - substance that is dissolved in a solution

20 Clues: - basic unit of a chemical element • - molecule composed of many monomers • - reactant of an enzyme catalyzed reaction • - substance that is dissolved in a solution • - a small chemical unit that makes up polymer • - atom that has a positive or negative charge • - mixture of water and a non-dissolved material • acid - compound with an amino acid group on 1 end • ...

Chemistry Crossword 2014-11-07

Chemistry Crossword crossword puzzle
Across
  1. Without it you pretty much die
  2. New substance produced in a chemical reaction
  3. Takes place when two or more substances react to create a new one
  4. John Dalton's model
  5. Most explosive element on the periodic table
  6. When a metal and non-metal combine
  7. Positive particle in the nucleus of an atom
  8. The smallest part of an element
  9. Releases energy
  10. Change in appearance or state
  11. Negative particle that orbits the nucleus in an atom
  12. Slow chemical change that occurs when oxygen reacts with a metal
  13. This element is found in many swimming pools
  14. Absorbs energy
Down
  1. _________+ Oxygen= H20
  2. It is present in bananas
  3. Chemical reaction that takes place in cells
  4. First scientist to organize the elements into a chart
  5. Element that has metallic and non-metallic properties
  6. table in which the elements are organized
  7. Chemical reaction that occurs when oxygen reacts with a substance
  8. Substance that helps a chemical reaction proceed more quickly
  9. Aurum is another name for this element
  10. Most reactive non-metals
  11. Neutral particle in the nucleus of an atom

25 Clues: Absorbs energy • Releases energy • John Dalton's model • _________+ Oxygen= H20 • It is present in bananas • Most reactive non-metals • Change in appearance or state • Without it you pretty much die • The smallest part of an element • When a metal and non-metal combine • Aurum is another name for this element • table in which the elements are organized • ...

Unit 2 2022-03-28

Unit 2 crossword puzzle
Across
  1. A Structure inside a cell that performs a specific function
  2. Water fearing
  3. This refers to the cell membrane allowing only some things to pass through
  4. The result of a chemical reaction
  5. Similar cells working together
  6. Passive transport from an area of high concentration to low concentration
  7. A protein that speeds up a chemical reaction. Sometimes called a catalyst
  8. The diffusion of water
  9. Movement across the cell membrane that requires energy. Going from low concentration to high concentration
  10. Any living thing
  11. Two or more atoms bonded together
  12. The basic unit of life
Down
  1. The location on an enzyme where a substrate binds
  2. Organs that work together to perform a function
  3. The energy needed to start a chemical reaction
  4. Movement across the cell membrane that does not require energy
  5. A chemical compound that goes through a chemical reaction after binding to an enzyme
  6. Water loving
  7. When an enzyme has become altered due to extreme change in temp. or pH
  8. The smallest unit of all matter
  9. Forms a bilayer that makes up the cell membrane
  10. Similar tissues working together

22 Clues: Water loving • Water fearing • Any living thing • The diffusion of water • The basic unit of life • Similar cells working together • The smallest unit of all matter • Similar tissues working together • The result of a chemical reaction • Two or more atoms bonded together • The energy needed to start a chemical reaction • Organs that work together to perform a function • ...

Enzymes and Biochemical Reactions 2023-11-14

Enzymes and Biochemical Reactions crossword puzzle
Across
  1. Releases energy in the form of light or heat
  2. An example of an exothermic reaction (2 words)
  3. The breaking and forming of bonds between different substances (2 words)
  4. The amount of energy needed to make a chemical reaction start (2 words)
  5. Light energy is stored as chemical energy in __
  6. Substances that are changed during a chemical reaction
Down
  1. Controls metabolic reactions
  2. An example of an endothermic reaction
  3. All the chemical reactions within each cell of an organism
  4. Break down larger molecules into smaller compounds
  5. Substances that are made by a chemical reaction
  6. Build larger molecules from smaller ones
  7. When enzymes speed up reactions
  8. Absorbs energy in the form of light or heat

14 Clues: Controls metabolic reactions • When enzymes speed up reactions • An example of an endothermic reaction • Build larger molecules from smaller ones • Absorbs energy in the form of light or heat • Releases energy in the form of light or heat • An example of an exothermic reaction (2 words) • Substances that are made by a chemical reaction • ...

Pearson 8 Chapter 6 Physical and Chemical Change 2016-03-03

Pearson 8 Chapter 6 Physical and Chemical Change crossword puzzle
Across
  1. Group of atoms joined together
  2. equation Chemical equation using symbols for substances
  3. Decrease in size as particles move closer together
  4. Heat is absorbed/ taken in
  5. Mixture where each particle of solute is surrounded by particles of solution
  6. Increase in size as particles move further away
  7. Change from solid to gas
  8. reaction chemical change that needs a constant supply of energy to continue.
  9. Change from solid to liquid
  10. Heat is given out
  11. Starting chemicals
Down
  1. New substances made in a chemical reaction
  2. reaction Re-arrangement of atoms to form new substances
  3. reaction of a metal with oxygen to form a metal oxide
  4. Change in state to solid
  5. Production of a solid on the addition of two solutions
  6. Change from gas to liquid
  7. Change from gas to solid
  8. equation Chemical equation using names of substances
  9. Change from liquid to gas at the top of the liquid only
  10. Change where all of the liquid is changing to gas
  11. change A change where no new substance is made
  12. Smallest building block that makes up all substances

23 Clues: Heat is given out • Starting chemicals • Change in state to solid • Change from solid to gas • Change from gas to liquid • Change from gas to solid • Heat is absorbed/ taken in • Change from solid to liquid • Group of atoms joined together • New substances made in a chemical reaction • change A change where no new substance is made • ...

Chemical Reactions 2026-03-03

Chemical Reactions crossword puzzle
Across
  1. The chemical reaction that transfers energy to the environment is an _____ reaction
  2. Modern chemistry grew out of ancient experimental work called ____
  3. Burning is a reaction called ___
  4. The new subtances formed after a chemical reaction are ___
  5. _______ of mass
Down
  1. The calculation of reactants and products in chemical reactions is ____
  2. The insoluble solid that emerges from a chemical solution is ___
  3. The reactant that is present in the least amount of a reaction is called the ____ factor
  4. The starting substances in a chemical reaction are _
  5. A chemical ___
  6. ______ Compounds
  7. A characteristic of a substance that determines how it interacts with other substances is the chemical ___

12 Clues: A chemical ___ • _______ of mass • ______ Compounds • Burning is a reaction called ___ • The starting substances in a chemical reaction are _ • The new subtances formed after a chemical reaction are ___ • The insoluble solid that emerges from a chemical solution is ___ • Modern chemistry grew out of ancient experimental work called ____ • ...

Stoichiometry 2025-01-25

Stoichiometry crossword puzzle
Across
  1. It is defined as the amount of a chemical substance that contains as many elementary entities (e.g., atoms, molecules, ions, electrons, or photons
  2. The law of conservation of mass, which states that during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.
  3. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas
  4. a unit of mass within the metric system,
  5. the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
  6. A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same.
  7. a basic representation of a chemical reaction, showing only the chemical formulas of the reactants and products without indicating the relative amounts involved, meaning it is an unbalanced equation where the number of atoms on each side is not equal
Down
  1. the comparison of the number of moles of one substance to the number of moles of another substance in a balanced chemical equation
  2. the mass in grams of one mole of a substance
  3. a method used to convert a quantity from one unit of measurement to another by utilizing conversion factors
  4. a whole number written in front of a chemical formula in an equation, indicating how many molecules or moles of that substance are involved in a chemical reaction
  5. a substance that takes part in and undergoes change during a reaction.
  6. A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.
  7. A product is a substance that is present at the end of a chemical reaction as a result of reactants undergoing change

14 Clues: a unit of mass within the metric system, • the mass in grams of one mole of a substance • a substance that takes part in and undergoes change during a reaction. • a method used to convert a quantity from one unit of measurement to another by utilizing conversion factors • ...

225 2025-11-14

225 crossword puzzle
Across
  1. SI unit of energy
  2. System that exchanges energy, not matter
  3. Making a solution less concentrated
  4. System that exchanges matter and energy
  5. Measure of disorder
  6. Medium that dissolves solute
  7. Everything outside the system
  8. Total heat content of a system
  9. Energy to raise 1g by 1°C
  10. Point where no more solute dissolves
  11. Unit of heat energy
  12. Slows down a chemical reaction
Down
  1. Ability to dissolve in a solvent
  2. Absorbs heat from surroundings
  3. Releases heat to surroundings
  4. Speeds reaction without being used up
  5. Study of reaction rates
  6. Dissolved in water
  7. Speed of a chemical reaction
  8. Solid formed in a solution reaction
  9. Amount of solute in solution
  10. No exchange of matter or energy
  11. Model explaining reaction rates
  12. Portion of universe under study
  13. Minimum energy to start reaction

25 Clues: SI unit of energy • Dissolved in water • Measure of disorder • Unit of heat energy • Study of reaction rates • Energy to raise 1g by 1°C • Speed of a chemical reaction • Medium that dissolves solute • Amount of solute in solution • Releases heat to surroundings • Everything outside the system • Absorbs heat from surroundings • Total heat content of a system • ...

Chemical Kinetics 2024-06-07

Chemical Kinetics crossword puzzle
Across
  1. A reaction intermediate is a compound _______ in one step and consumed in another
  2. A very exothermic reaction may be slow because it has a ______ activation energy
  3. Rate of reaction is expressed as ___________ over time
  4. When __________ increases, particles move faster and with more energy ∴ speeding up the reaction rate
  5. In a potential energy diagram, activation energy is represented by a _____
  6. The minimum potential energy that particles have to collide with before they react
  7. The rate of the reaction can be affected differently by each _______
  8. The ________ mechanism determines the overall rate of the reaction
  9. When the concentration of a reactant is doubled, and it is a 2nd order reaction, the reaction rate will _____
  10. The slow step mechanism has the _____ order
  11. Decreasing surface area will _______ the rate of the reaction
  12. If particles do not collide in the correct __________ the reaction will not occur
  13. The ________________ is a high energy state between reactants and products
  14. A heterogeneous catalyst is where the catalyst and reactants are in _______ states
  15. In terms of molecularity, a mechanism with 3 reacting molecules is called __________
Down
  1. Activation energy can be determined by the______
  2. Step-by-step sequence of elementary reactions by which an overall chemical change occurs
  3. A reaction involving two reactant molecules is ________
  4. Reactions often don’t occur in the __________ indicated by the chemical equation
  5. The time required for half of a sample to decay
  6. In the equation r=K[X]ˢ[Y]ⁿ, k represents a ________
  7. The difference in potential energy between products and reactants is _____
  8. A theory that states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation
  9. On a maxwell-boltzmann distribution graph, adding a catalyst makes the activation energy move _______
  10. A negative sign indicates the rate of _________ of a reactant
  11. Adding a _____ to a reaction ∴ speeds up the reaction rate
  12. Chemical kinetics is used to determine ways to control the______ of a reaction
  13. A reaction whose rate is independent of the concentration of the reactant(s)
  14. the sum of the exponents in the rate law equation
  15. 1st order reactions occur in both chemical and _____ changes

30 Clues: The slow step mechanism has the _____ order • The time required for half of a sample to decay • Activation energy can be determined by the______ • the sum of the exponents in the rate law equation • In the equation r=K[X]ˢ[Y]ⁿ, k represents a ________ • Rate of reaction is expressed as ___________ over time • A reaction involving two reactant molecules is ________ • ...

Chemical Reactions 2020-10-28

Chemical Reactions crossword puzzle
Across
  1. Chemical equation that follows the law of conservation of mass
  2. A reaction where two compounds react to form to new compounds
  3. A reaction where an element replaces another element in a compound creating a new element and a new compound
  4. A reaction with oxygen that produces energy.
  5. A reaction where two elements or compounds become one new compound
  6. A chemical that is created as a chemical reaction occurs
  7. A chemical that is at the start of the reaction, but is used up as the reaction proceeds
  8. List of elements that ranks elements based on reactivity
Down
  1. Type of equation that show all of the elements or molecules that are involved in a reaction.
  2. A number placed in front of a molecule or element to balance the equation
  3. A reaction where one complex compound breaks down into two or more elements or simpler compounds
  4. Chemical that is not used in a reaction, but speeds up the chemical reaction

12 Clues: A reaction with oxygen that produces energy. • A chemical that is created as a chemical reaction occurs • List of elements that ranks elements based on reactivity • A reaction where two compounds react to form to new compounds • Chemical equation that follows the law of conservation of mass • A reaction where two elements or compounds become one new compound • ...

Stoichiometry 2022-03-11

Stoichiometry crossword puzzle
Across
  1. yield is the percent ratio of actual yield divided by theoretical yield.
  2. chemical equation in which the number and tyoe of atoms and the electric charge is the same on both the reactant and product sides of the equation.
  3. reactant left over in a reaction because it is present in a great amount than needed to react with the limiting reactant
  4. the quantitative relationship in chemical reactions
  5. substance formed as result of a chemical reaction(located on the RIGHT SIDE)
  6. yield is the quantity of product that would be obtained if the limiting reactant in a reaction reacted completely.
  7. average mass of atoms of an element
  8. a ratio between the amounts in moles of any two compounds involved in a chemical reaction.
  9. the starting material for a reaction(located on the LEFT SIDE)
  10. the mass of one mole of a substance
Down
  1. the percentage by mass of each element in a compound.
  2. a process used to convert one unit to another.
  3. a chemical mass unit, defined to be 6,022 X 10^23 molecules, atoms, or a collection of things.
  4. determines how much product may result from a chemical reaction
  5. yield is the quantity of a product that is obtained from a chemical reaction.
  6. a multiplier or factor that measures some property(the big number on the left)

16 Clues: average mass of atoms of an element • the mass of one mole of a substance • a process used to convert one unit to another. • the quantitative relationship in chemical reactions • the percentage by mass of each element in a compound. • the starting material for a reaction(located on the LEFT SIDE) • determines how much product may result from a chemical reaction • ...

9 2025-11-24

9 crossword puzzle
Across
  1. SI unit of energy
  2. System that exchanges energy, not matter
  3. Making a solution less concentrated
  4. System that exchanges matter and energy
  5. Measure of disorder
  6. Medium that dissolves solute
  7. Everything outside the system
  8. Total heat content of a system
  9. Energy to raise 1g by 1°C
  10. Point where no more solute dissolves
  11. Unit of heat energy
  12. Slows down a chemical reaction
Down
  1. Ability to dissolve in a solvent
  2. Absorbs heat from surroundings
  3. Releases heat to surroundings
  4. Speeds reaction without being used up
  5. Study of reaction rates
  6. Dissolved in water
  7. Speed of a chemical reaction
  8. Solid formed in a solution reaction
  9. Amount of solute in solution
  10. No exchange of matter or energy
  11. Model explaining reaction rates
  12. Portion of universe under study
  13. Minimum energy to start reaction

25 Clues: SI unit of energy • Dissolved in water • Measure of disorder • Unit of heat energy • Study of reaction rates • Energy to raise 1g by 1°C • Speed of a chemical reaction • Medium that dissolves solute • Amount of solute in solution • Releases heat to surroundings • Everything outside the system • Absorbs heat from surroundings • Total heat content of a system • ...

Macromolecules Crossword Puzzle 2023-12-08

Macromolecules Crossword Puzzle crossword puzzle
Across
  1. Substance changed by a chemical reaction
  2. A molecule that includes sugars and starches
  3. A process by which substances break and form chemical bond and make them into new substances
  4. Molecule that makes up proteins
  5. Substance formed by a chemical reaction
  6. Another word for a simple sugar
  7. Reactant in a chemical reaction which an enzyme acts
  8. A chemical bond formed when two atoms share one or more pairs of electrons
Down
  1. Large,complex molcules that play important roles in a organism
  2. Genetic material of organisms
  3. A nucleotide that provides energy
  4. An attraction between molecules
  5. Carries genetic instructions for development
  6. A molecule with a high number of atoms
  7. A molecule produced by a living organsim
  8. A protein that catalyzes reactions in an experiment
  9. Substance that dissolves in a solvent
  10. A lipid containing a phosphate group
  11. Smallest basic unit of matter
  12. A nonpolar molecule

20 Clues: A nonpolar molecule • Genetic material of organisms • Smallest basic unit of matter • An attraction between molecules • Molecule that makes up proteins • Another word for a simple sugar • A nucleotide that provides energy • A lipid containing a phosphate group • Substance that dissolves in a solvent • A molecule with a high number of atoms • ...

Unit 6 Crossword 2022-01-04

Unit 6 Crossword crossword puzzle
Across
  1. a solution usng water as the solvent; shown a "aq" in a chemical equation
  2. a type of reaction shown as A+B-->AB
  3. process used to determine the concentration of a solution; involves a color change
  4. a process in which atoms rearrange to form a new substance
  5. what we call the row on the periodic table
  6. (2 words) a type of bond that holds atoms together by unequally shared electrons
  7. a value that describes the relative strength in which atoms attract electrons in a bond
  8. a type of reaction between a substance and oxygen
Down
  1. a type of ion composed of two or more atoms that act as a unit and have a significant charge.
  2. a type of bond that involves atoms sharing electrons
  3. (3 words) this law is proven by a balanced chemical equation
  4. a type of reaction shown as AB-->A+B
  5. a type of reaction shown as A+BC-->AC+B
  6. electrons that occupy the highest energy level of an atom
  7. the substances before a chemical reaction occurs
  8. the substances after a chemical reaction occurs
  9. another word for charged atoms
  10. a type of bond that holds oppositely charged atoms together

18 Clues: another word for charged atoms • a type of reaction shown as A+B-->AB • a type of reaction shown as AB-->A+B • a type of reaction shown as A+BC-->AC+B • what we call the row on the periodic table • the substances after a chemical reaction occurs • the substances before a chemical reaction occurs • a type of reaction between a substance and oxygen • ...

Unit 3 (1st/2) 2022-11-22

Unit 3 (1st/2) crossword puzzle
Across
  1. barrier that prevents chemical reactions from occurring; this barrier needs to be met and overcome for chemical reactions to take place
  2. location on enzyme where substrate binds
  3. basic unit of life
  4. reactants in an enzyme-catalyzed reaction
  5. variable that is manipulated by the scientist to test their hypothesis
  6. type of energy that is stored due to objects position or condition
  7. type of reaction in which there is an overall/net release in energy; using ATP is an example
  8. enzymes _______activation energy to speed up chemical reactions
  9. all chemical reactions that occur in an organism
  10. the structural unit that consists of substrate bound to enzyme
Down
  1. type of energy that is due to objects' movement or motion
  2. type of graph used to compare the averages of different worded categories
  3. processes the break old bond and form new bonds; rearranged atoms to make new substances from old substances
  4. form of potential energy stored in chemical bonds of molecule
  5. type of graph used to determine pattern or relationship between independent and dependent variable
  6. new substances formed after a chemical reaction; placed after the arrow in a chemical reaciton
  7. the capacity to cause change
  8. after supporting with a chemical reaction, enzymes can be ______ to support with another round of chemical reactions
  9. energy currency within cells, molecule that stores energy to be directly used by cells
  10. biological catalysts that are proteins; speed up chemical reactions by lowering activation energy
  11. type of reaction in which there is an overall/net absorption of energy; making ATP is an example
  12. substances the participate in chemical reactions; placed before the arrow in a chemical equation
  13. variable that relies on the independent variable and is the outcome/result of experiments
  14. substances that speed up chemical reactions by lowering activation energy
  15. type of graph used to show change in dependent variable over consecutive/continuous time
  16. substrate and enzyme are __________ to bind together; enzymes are specific to the substrates they bind

26 Clues: basic unit of life • the capacity to cause change • location on enzyme where substrate binds • reactants in an enzyme-catalyzed reaction • all chemical reactions that occur in an organism • type of energy that is due to objects' movement or motion • form of potential energy stored in chemical bonds of molecule • ...

Chemistry Crossword 2017-11-09

Chemistry Crossword crossword puzzle
Across
  1. the smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
  2. (in chemistry) vertical column of elements in the periodic table; elements in a family all have similar chemical properties; also called a group
  3. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  4. chemical reaction that takes place in cells; food (sugar) reacts with oxygen to produce energy, water, and carbon dioxide
  5. change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
  6. group 2 elements in the periodic table; their reactivity is not as strong as that of the alkali metals
  7. chemical reaction that releases energy
  8. change of state from a gas to a solid
  9. number of protons in the nucleus of one atom of an element
  10. unit measure of atomic mass; 1 amu is equal to 1/12 the mass of a carbon 12 atom
Down
  1. group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
  2. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  3. reaction that takes place when two or more substances react to form new substances
  4. change of state from a gas to a liquid
  5. slow chemical change that occurs when oxygen in the air reacts with a metal
  6. chemical reaction that absorbs energy
  7. description of a solid that can be stretched into a long wire
  8. principle that matter is not created or destroyed in a chemical reaction; the mass of the products always equals the mass of the reactants
  9. substance that helps a chemical reaction to proceed more quickly
  10. description of how a substance interacts with other substances, such as acids;chemical properties are observable only when a chemical change occurs
  11. change of state from a liquid to a solid
  12. amount of mass in a given volume of a substance
  13. catalyst involved in chemical reactions in living things
  14. chemical combination of two or more elements in a specific ratio
  15. combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
  16. ability of a substance to conduct electricity or heat

26 Clues: chemical reaction that absorbs energy • change of state from a gas to a solid • change of state from a gas to a liquid • chemical reaction that releases energy • change of state from a liquid to a solid • amount of mass in a given volume of a substance • ability of a substance to conduct electricity or heat • catalyst involved in chemical reactions in living things • ...

Chemistry Crossword 2017-11-15

Chemistry Crossword crossword puzzle
Across
  1. substance that helps a chemical reaction to proceed more quickly
  2. change of state from a gas to a liquid
  3. dull, brittle element that does not conduct electricity
  4. measure of atomic mass; 1 amu is equal to 1/12 the mass of a carbon 12 atom
  5. energy stored in chemicals and released when chemicals react; a form of potential or stored energy
  6. a reaction that takes place when two or more substances react to form new substances
  7. chemical reaction that takes place in cells; food (sugar) reacts with oxygen to produce energy, water, and carbon dioxide
  8. chemical combination of two or more elements in a specific ratio
  9. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  10. the smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
  11. group 18 elements in the periodic table;the most stable and unreactive elements
Down
  1. ability of a substance to conduct electricity or heat
  2. group 1 elements in the periodic table, not including hydrogen;the most reactive of the metals
  3. mass of one atom of an element calculated from the total number of protons,neutrons, and electrons of that atom; measured in atomic mass units (amu)
  4. number of protons in the nucleus of one atom of an element
  5. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  6. principle that matter is not created or destroyed in a chemical reaction; the mass of the products always equals the mass of the reactants
  7. combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
  8. chemical reaction that absorbs energy
  9. description of how a substance interacts with other substances, such as acids;chemical properties are observable only when a chemical change occurs
  10. chemical reaction that releases energy
  11. group 2 elements in the periodic table; their reactivity is not as strong as that of that alkali metals
  12. change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
  13. an experiment in which all reactants and all products of a chemical reaction are accounted for
  14. group 17 elements in the periodic table;the most reactive non-metals

25 Clues: chemical reaction that absorbs energy • change of state from a gas to a liquid • chemical reaction that releases energy • ability of a substance to conduct electricity or heat • dull, brittle element that does not conduct electricity • number of protons in the nucleus of one atom of an element • substance that helps a chemical reaction to proceed more quickly • ...

Vocabulary Chapter 7-Chemical Reactions (for any words that have two words, there is a dash in between) 2021-12-16

Vocabulary Chapter 7-Chemical Reactions (for any words that have two words, there is a dash in between) crossword puzzle
Across
  1. an amount of a substance that contains approximately 6.02 x 10 to the 23 particles of that substance.
  2. the energy stored in the chemical bonds of a substance
  3. In a chemical reaction, the substances that undergo change
  4. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  5. a chemical reaction that releases energy to its surroundings
  6. a reaction in which one element takes the place of another element in a compound
Down
  1. The new substances formed as a result of that change
  2. one in which two different compounds exchange positive ions and form two new compounds
  3. a reaction in which a compound breaks down into two or more simpler substances
  4. the numbers that appear before the formulas
  5. the mass of one mole of a substance
  6. a chemical reaction that absorbs energy from its surroundings
  7. a reaction in which two or more substances react to form a single substance

13 Clues: the mass of one mole of a substance • the numbers that appear before the formulas • The new substances formed as a result of that change • the energy stored in the chemical bonds of a substance • In a chemical reaction, the substances that undergo change • a chemical reaction that releases energy to its surroundings • ...