chemical reaction Crossword Puzzles

chapter 2 crossword 2022-03-21

chapter 2 crossword crossword puzzle
Across
  1. a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
  2. a rapid reaction between oxygen and fuel that results in fire
  3. a characteristic of a substance that describes its ability to change into different substances
  4. a substance that enters into a chemical reaction
  5. the minimum amount of energy needed to get a chemical reaction started
  6. the process in which substances undergo chemical changes that result in the formation of new substances
  7. anything that has mass and occupies space
  8. a material that increases the rate of reaction by lowering the activation energy
  9. a chemical reaction in which two or more simple substances combine to form a new, more complex substance
  10. a biological catalyst that lowers the activation energy of of reactions in cells
  11. The principle stating that matter is not created or destroyed during a chemical reaction
Down
  1. a chemical reaction that breaks down compounds into simpler products
  2. a reaction that releases energy in the form of heat
  3. a change to the physical properties of a substance.
  4. a material that decreases the rate of a reaction
  5. the amount of one material in a certain volume of another material
  6. a substance formed as a result of a chemical reaction
  7. the study of the properties of matter and how matter changes
  8. a characteristic of a substance that can be observed or measured without changing the identity of the substance
  9. a material that releases energy energy when it burns
  10. chemical reactions in which the reactants absorb heat energy from the surroundings to form products.
  11. An easy way to show a chemical reaction using symbols
  12. a solid that forms a solution during a chemical reaction
  13. a system in which matter can enter from or escape to the surroundings
  14. a system in which no matter is allowed to enter or leave

25 Clues: anything that has mass and occupies space • a material that decreases the rate of a reaction • a substance that enters into a chemical reaction • a reaction that releases energy in the form of heat • a change to the physical properties of a substance. • a material that releases energy energy when it burns • a substance formed as a result of a chemical reaction • ...

Unit 10 Chemical Reactions 2024-03-06

Unit 10 Chemical Reactions crossword puzzle
Across
  1. chemical reactions that release thermal energy
  2. (two words)a description of a reaction using element symbols and chemical formulas
  3. (two words with hyphen) a type of reaction where one element replaces another element in a compound
  4. the starting substance before a reaction
  5. a type of chemical reaction where substances combine with oxygen and releases energy
  6. a catalyst the speeds up the reaction in living cells
Down
  1. a type of reaction where one compound breaks down and forms two or more substances
  2. (two words)a process in which atoms of one or more substances rearrange to form one or more new substances
  3. number placed in front of an element symbol or chemical formula
  4. (five words) the law that 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
  5. (two words with hyphen) a type of reaction where the negative ions in two compounds switch places, forming two new compounds
  6. substance that increases reaction rate by lowering the activation energy
  7. chemical reactions that absorb thermal energy
  8. (two words) the minimum amount of energy needed to start a chemical reaction
  9. a substance that slows or even stops a chemical reaction
  10. the substance produced by a chemical reaction
  11. a type of chemical reaction where two or more substances combine and form one compound

17 Clues: the starting substance before a reaction • chemical reactions that absorb thermal energy • the substance produced by a chemical reaction • chemical reactions that release thermal energy • a catalyst the speeds up the reaction in living cells • a substance that slows or even stops a chemical reaction • number placed in front of an element symbol or chemical formula • ...

Types of reaction :- Rudra Sameer Kulkarni 10S 2025-05-01

Types of reaction :- Rudra Sameer Kulkarni 10S crossword puzzle
Across
  1. A process in which a substance loses oxygen or gains hydrogen
  2. A chemical reaction that occur by the absorption of heat.
  3. A decomposition reaction that takes place using heat.
  4. A process in which a substance gains oxygen or loses hydrogen
  5. A substance that helps oxidation by donating oxygen or removing hydrogen.
  6. A process in which one or more substances are transformed into new substances.
  7. The slow oxidation of fats and oils resulting in the change of smell and taste in them..
  8. A reaction in which ions or group of atoms are exchanged between two compounds forming new compounds
  9. A representation of a chemical reaction using the names of the reactants and products.
  10. A reaction that involves both oxidation and reduction happening simultaneously.
  11. A substance that increases the rate of a chemical reaction without itself undergoing any change.
  12. A substance that helps reduction by removing oxygen or donating hydrogen.
  13. The slow degradation of metals due to reactions with moisture, air, or chemicals, like rusting.
Down
  1. A reaction where a single reactant breaks down into two or more products.
  2. A reaction where two or more substances combine to form a single product.
  3. A reaction in which a more reactive element replaces a less reactive one from its compound.
  4. The substances that take part and undergo change in a chemical reaction
  5. A chemical equation with equal numbers of each type of atom on both sides.
  6. The new substances formed after a chemical reaction.
  7. A chemical equation that shows only the formulas of the reactants and products without balanced quantities.
  8. A chemical reaction that is accompanied by the evolution of heat
  9. A decomposition reaction that involve the use of light energy.
  10. The chemical decomposition of a substance using electrical energy.

23 Clues: The new substances formed after a chemical reaction. • A decomposition reaction that takes place using heat. • A chemical reaction that occur by the absorption of heat. • A process in which a substance loses oxygen or gains hydrogen • A process in which a substance gains oxygen or loses hydrogen • A decomposition reaction that involve the use of light energy. • ...

Jasmine Matias 2017-02-28

Jasmine Matias crossword puzzle
Across
  1. to happen suddenly
  2. cause to undergo a reaction
  3. is the symbolic representation of a chemical reaction
  4. is a type of chemical reaction where two compounds react
  5. the species formed from chemical reactions
  6. is a substance that speeds up a chemical reaction
  7. smaller or less
  8. combination
Down
  1. two atoms
  2. chemical decomposition produced by passing an electric current through a liquid or solution containing ions
  3. dissolved in water
  4. is the amount of product obtained in a chemical reaction
  5. where an element reacts with a compound and takes the place of another element
  6. chemical reaction chemical that occurs between a fuel
  7. chemical property that is constant for a system under specified conditions
  8. decay
  9. a charged chemical species (ion) composed of two or more atoms covalently bonded
  10. undergoes change

18 Clues: decay • two atoms • combination • smaller or less • undergoes change • dissolved in water • to happen suddenly • cause to undergo a reaction • the species formed from chemical reactions • is a substance that speeds up a chemical reaction • is the symbolic representation of a chemical reaction • chemical reaction chemical that occurs between a fuel • ...

Chemical Reactions 2025-02-18

Chemical Reactions crossword puzzle
Across
  1. reactions that absorb energy from the surroundings and use it during the chemical reaction
  2. endothermic chemical reactions ___ the temperature of the surroundings
  3. chemical reaction absorbing light energy to produce glucose and oxygen from carbon dioxide and water
  4. a color change occurs when iron reacts with this other substance
  5. observation that a chemical reaction might have occurred
  6. ending substance after a chemical reaction
  7. starting substance before a chemical reaction
  8. burning is a chemical reaction that requires a ___ and oxygen.
Down
  1. exothermic chemical reactions ___ the temperature of the surrounding
  2. you might see these when a gas is produced
  3. burning is a reaction indicated by the production of this form of energy
  4. during the electrolysis of water, this form of energy is absorbed and used
  5. reactions that produce energy distribute it to the surroundings during the chemical reaction
  6. rotting garbage is a chemical reaction that produces a change in ___
  7. these break apart and rearrange during chemical reactions
  8. substances ___ into other substances during a chemical reaction

16 Clues: you might see these when a gas is produced • ending substance after a chemical reaction • starting substance before a chemical reaction • observation that a chemical reaction might have occurred • these break apart and rearrange during chemical reactions • burning is a chemical reaction that requires a ___ and oxygen. • ...

FUCKYOUChemical Reaction 2023-02-07

FUCKYOUChemical Reaction crossword puzzle
Across
  1. it is a solid that is produced during a chemical reaction
  2. gains electrons
  3. loses electrons
  4. the number written below an element; tells you how many atoms
  5. breaking down compound
  6. Capable of being dissolved in a liquid
  7. absorbing heat during a chemical reaction
  8. reacts with oxygen to produce carbon dioxide and water vapor
  9. A process in which substances collide with each other and react to product products
  10. A substance that changes when it is combined with another substance in a chemical reaction.
Down
  1. acid and base react to produce salt and water
  2. relationships involving reactants and/or products in a chemical reaction
  3. combining different reactants
  4. tells you the number and type of atoms in a molecule
  5. shows you which chemical species are reacting to yield products
  6. a number in front of a chemical formula
  7. lowers the activation energy and increasing the rate of reaction
  8. releasing heat during a chemical reaction
  9. when one atom displaces another
  10. A substance that is formed from a reaction between substances
  11. one reagent is reduced while another is oxidized

21 Clues: gains electrons • loses electrons • breaking down compound • combining different reactants • when one atom displaces another • Capable of being dissolved in a liquid • a number in front of a chemical formula • releasing heat during a chemical reaction • absorbing heat during a chemical reaction • acid and base react to produce salt and water • ...

TYPES OF REACTIONS 2024-05-14

TYPES OF REACTIONS crossword puzzle
Across
  1. Substances formed as a result of a chemical reaction.
  2. Conversion of a gas or vapor into a liquid.
  3. Exchange of elements between two compounds.
  4. The substance that gets reduced
  5. Substances that undergo chemical change in a reaction.
  6. Gain of electrons by a substance during a reaction.
  7. A type of reaction where two or more substances combine to form a single product.
Down
  1. Process of using an electric current to drive chemical reaction.
  2. Loss of electrons by a substance during a reaction.
  3. A reaction that absorbs heat energy from its surroundings.
  4. Insoluble solid formed during a chemical reaction.
  5. The substance that gets oxidised
  6. Process of using the sunlight to drive chemical reaction.
  7. Reaction between an acid and a base to form salt and water.
  8. A reaction that releases heat energy to its surroundings.
  9. Breaking down of a compound into simpler substances.
  10. A type of reaction involving both reduction and oxidation processes.
  11. Rapid chemical combination of a substance with oxygen, producing heat and light.

18 Clues: The substance that gets reduced • The substance that gets oxidised • Conversion of a gas or vapor into a liquid. • Exchange of elements between two compounds. • Insoluble solid formed during a chemical reaction. • Loss of electrons by a substance during a reaction. • Gain of electrons by a substance during a reaction. • ...

Chemical Reaction 2023-11-15

Chemical Reaction crossword puzzle
Across
  1. one reactant into several products
  2. Number written in front which determines how many molecules in the equation
  3. consisting of two atoms
  4. determine what take part and undergoes change during reaction
  5. 3 H₂ + N₂ -> 2 NH₃ is an example of what type of reaction:
Down
  1. result of chemical reaction
  2. reactant of CO2 + H20
  3. Diatomic element that has 8 atomic number
  4. Reactants are found on the ... side of a chemical equation
  5. One of the elements that diatomic
  6. Acronym for hydrogen, oxygen, fluorine, Bromine, Iodine, and chlorine
  7. that matter cannot be created or destroyed and the mass of the products ... the mass of the reactants.

12 Clues: reactant of CO2 + H20 • consisting of two atoms • result of chemical reaction • One of the elements that diatomic • one reactant into several products • Diatomic element that has 8 atomic number • Reactants are found on the ... side of a chemical equation • 3 H₂ + N₂ -> 2 NH₃ is an example of what type of reaction: • ...

Chemistry Crossword 2015-11-19

Chemistry Crossword crossword puzzle
Across
  1. a subatomic particle of about the same mass as a proton but without an electric charge
  2. the smallest part of an element
  3. mass of one atom of an element calculated from the number of protons, neutrons, and electrons
  4. new substance produced in a chemical reaction between reactants
  5. a stable subatomic particle occurring in all atomic nuclei,
  6. an experiment in which all reactants and all products of a chemical reaction are accounted
  7. pure substance when two or more non-metals combine
  8. an atom or group of atoms that has become electrically charged because it has lost or gained electrons
  9. anything that has mass and occupies space
  10. chemical reaction that takes place in cells
  11. a reaction that takes place when two or more substances react to form a new substance
  12. pure substance that cannot be broken down into other substances
  13. number of protons in the nucleus of one atom of an element
  14. Workplace Hazardous Materials Information Systems
  15. a stable subatomic particle with a charge of negative electricity
  16. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
Down
  1. substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  2. an experiment in which one or more products of a chemical reaction can escape
  3. chemical reaction that absorbs heat
  4. fundamental principle that energy cannot be created or destroyed in a chemical reaction
  5. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  6. pure substance formed when at least one metal and non-metal combine
  7. a table in which the elements are organized by their physical and chemical properties
  8. slow chemical change that occurs when oxygen in the air reacts with a metal
  9. chemical reaction that releases heat

25 Clues: the smallest part of an element • chemical reaction that absorbs heat • chemical reaction that releases heat • anything that has mass and occupies space • chemical reaction that takes place in cells • Workplace Hazardous Materials Information Systems • pure substance when two or more non-metals combine • number of protons in the nucleus of one atom of an element • ...

Physical Science Chapter 6 2024-12-04

Physical Science Chapter 6 crossword puzzle
Across
  1. Any chemical change in which one species is oxidized (loses electrons) and another species is reduced (gains elections) also called redox reaction
  2. A part, substance, or element that lies beneath and supports another part, substance, or element; the reactant in reactions catalyzed by enzymes
  3. A reaction in which one element or radical takes the place of another element or radical in a compound
  4. A substance that forms in a chemical reaction
  5. A state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged
  6. A chemical reaction that requires heat
  7. A substance or molecule that participates in a chemical reaction
  8. A substance that changes the rate of a chemical reaction without being consumed or changed significantly
  9. A reaction in which a single compound breaks down to simpler substances
Down
  1. The oxidation reaction of an organic compound, in which heat is released
  2. A reaction in which two or more substances combine to form a new compound
  3. A reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
  4. A chemical reaction in which heat is released to the surroundings
  5. The process in which an electric current is used to produce a chemical reaction, such as the decomposition of water
  6. An organic group that has one or more elections avaliable for bonding
  7. The energy released when a chemical compound reacts to produce new compounds
  8. A type of protein that speeds up metabolic reactions in plants and animals without being permanently changed or destroyed

17 Clues: A chemical reaction that requires heat • A substance that forms in a chemical reaction • A substance or molecule that participates in a chemical reaction • A chemical reaction in which heat is released to the surroundings • An organic group that has one or more elections avaliable for bonding • ...

Chemical Reactions 2020-02-06

Chemical Reactions crossword puzzle
Across
  1. substance that speeds up the rate of a chemical reaction
  2. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  3. The elements or compounds produced by a chemical reaction.
  4. A reaction in which energy is absorbed
  5. the principle stating that matter is not created or destroyed during a chemical reaction
  6. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  7. A chemical substance that is present at the start of a chemical reaction
Down
  1. A system in which no matter is allowed to enter or leave
  2. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  3. A solid that forms from a solution during a chemical reaction.
  4. A reaction that releases energy in the form of heat
  5. Energy needed to get a reaction started
  6. the process by which one or more substances change to produce one or more different substances
  7. A system in which matter can enter from or escape to the surroundings.
  8. A chemical reaction that breaks down compounds into simpler products.
  9. combination
  10. A substance that slows down or stops a chemical reaction

17 Clues: combination • A reaction in which energy is absorbed • Energy needed to get a reaction started • A reaction that releases energy in the form of heat • A system in which no matter is allowed to enter or leave • substance that speeds up the rate of a chemical reaction • A substance that slows down or stops a chemical reaction • ...

Vocab 2020-04-20

Vocab crossword puzzle
Across
  1. Displacement – The positive ion from one compound replaces the positive ion of the other to form a new compound. ( AB + CD → AD + CB ).
  2. – thermal energy is absorbed and needed to complete the reaction
  3. – these represent the number of units of each substance taking part in a reaction
  4. – the new substances produced in a chemical reaction
  5. – the gain of an electron
  6. reaction – occurs when one substance breaks down into two or more substances ( AB → A + B )
  7. chemical equation – a chemical equation with the same number of atoms of each element of both sides of the arrow
  8. – the loss of an electron
  9. reaction – a reaction that can occur in both the forward and reverse directions
  10. – the starting substances on the left hand side of chemical reaction
  11. reaction – a change is which one of more substances are converted into a new substance.
  12. reaction – two or more substances combine to form another substance ( A + B → AB )
Down
  1. reaction – occurs when a substances reacts with oxygen to produce energy in the form of heat and light
  2. – a state in which forward and reverse reactions proceed at equal rates
  3. rate – the rate at which reactants change into products
  4. Displacement – Atom A displaces atom B to produce a new molecule AC ( A + BC → AC + B)
  5. equation – a way to describe a chemical reaction using chemical formulas and other symbols
  6. – a substance that speeds up a chemical reaction
  7. – are used to slow down the rate of chemical reactions or prevent them from happening at all
  8. – energy given off in the form of thermal energy or heat.

20 Clues: – the gain of an electron • – the loss of an electron • – a substance that speeds up a chemical reaction • – the new substances produced in a chemical reaction • rate – the rate at which reactants change into products • – energy given off in the form of thermal energy or heat. • – thermal energy is absorbed and needed to complete the reaction • ...

vocab 6 physical science 2013-11-14

vocab 6 physical science crossword puzzle
Across
  1. a chemical reaction that requires heat
  2. a substance that forms in a chemical reaction
  3. any chemical change in which one species is oxidized and one is reduced
  4. process in which an a electric current is used to produce a chemical reaction
  5. the oxidation reaction of an organic compound in which heat is release
  6. the relative number of moles of the substances required to produce a given amount of product in a chemical reaction
  7. the energy released when a chemical compound reacts to release a new compound
  8. a state of balance of in which the rate of a forward reaction equals the rate of a reverse reaction and the concentration of products and reactions remains unchanged
  9. a reaction in which energy is released into the environment
Down
  1. a reaction in which two or more substances combine to form a new compound
  2. a reaction in which a single compound breaks down into two or more simpler substances
  3. an organic group that has one or more electrons available for bonding
  4. a reaction in which one element or radical takes the place of another element or radical in a compound
  5. a substance or molecule that participates in a chemical reaction
  6. a reaction in which a gas, solid precipitate or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
  7. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  8. a part, substance, or element that lies beneath and supports another part, substance, or element
  9. a type of protein that speeds up the metabolic reactions in plants and animals without being permanently changed or destroyed
  10. a substance that changes the rate of a chemical reaction without being consumed or changed significantly

19 Clues: a chemical reaction that requires heat • a substance that forms in a chemical reaction • a reaction in which energy is released into the environment • a substance or molecule that participates in a chemical reaction • an organic group that has one or more electrons available for bonding • the oxidation reaction of an organic compound in which heat is release • ...

Important Chemistry Terms in Chapter 11-12 2017-05-04

Important Chemistry Terms in Chapter 11-12 crossword puzzle
Across
  1. speed of how fast a reaction occurs
  2. stress: removal of something
  3. a state of a chemical reaction when there is no net change in the amount of reactants and products
  4. reaction: products are produced from reactants and it goes from left to right in a reversible reaction
  5. theory: basis of study of the rate of chemical reactions
  6. completely consumed in irreversible reactions
  7. require energy
  8. are formed and process comes to an end
  9. kinetics: study of reaction rates
  10. release energy
  11. stress: addition of something
Down
  1. reaction: the reactants form products that can react together to go back to the original reactants
  2. energy: minimum energy required for a reaction to occur
  3. biological catalysts
  4. substance which slows down a reaction
  5. reactions: a reaction that can't be conducted backwards
  6. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  7. reactions: Reaction in which products of a reaction can return back to produce original reactants
  8. how often reactants collide to create a product

19 Clues: require energy • release energy • biological catalysts • stress: removal of something • stress: addition of something • kinetics: study of reaction rates • speed of how fast a reaction occurs • substance which slows down a reaction • are formed and process comes to an end • completely consumed in irreversible reactions • how often reactants collide to create a product • ...

Stoichiometry 2017-02-04

Stoichiometry crossword puzzle
Across
  1. the mass of an atom
  2. the measure of the efficiency of a chemical reaction calculated by dividing the theoretical yield by the actual yield and multiplied by a 100
  3. the mass of one mole of the substance
  4. the total mass of the empirical formula
  5. Is the following chemical equation balanced or unbalanced? 4Al + 3O -> 2Al O
  6. the number preceding the substances in a chemical equation
  7. a type of reaction where bonds between atoms are formed or broken
  8. using a balanced chemical equation to calculate the amount of reactants and products is called
  9. What type of reaction? 2HgO -> 2Hg + O
  10. What type of reaction? FeS + 2HBr -> 1FeBr + H S
  11. 6.02 x 10
  12. What type of reaction? 2Al + 6HCl -> 2AlCl + 3H
  13. 6.02 x 10
  14. these problems tell you how much of any given product you get by reacting any given amount of reactants
Down
  1. What type of reaction? O + H -> H O
  2. the true formula
  3. the simplest form of the formula
  4. the amount of a substance actually produced at the end of a chemical reaction
  5. In a chemical equation, these substances are right of the arrow
  6. In a chemical equation, these substances are left of the arrow
  7. percentage of each element in a compound
  8. What type of reaction? C H O + 4O -> 3CO + 3H O
  9. representation of a chemical reaction using symbols, numbers, etc.

23 Clues: 6.02 x 10 • 6.02 x 10 • the true formula • the mass of an atom • the simplest form of the formula • What type of reaction? O + H -> H O • the mass of one mole of the substance • What type of reaction? 2HgO -> 2Hg + O • the total mass of the empirical formula • percentage of each element in a compound • What type of reaction? C H O + 4O -> 3CO + 3H O • ...

Chapter 4 Crossword 2022-11-16

Chapter 4 Crossword crossword puzzle
Across
  1. Solid formed from liquid reactants during a chemical reaction
  2. a number placed in front of a chemical formula in an equation
  3. substance that undergoes a chemical change
  4. compounds break down into simpler products
  5. the new substance formed from a chemical change
  6. matter doesn’t enter or leave
  7. matter can enter or escape the surroundings
  8. 1 element replaces another element in a compound
  9. reaction in which energy is absorbed
  10. way to show a chemical reaction, using symbols instead of words
  11. any change that alters the form or appearance of a substance but does not create a new substance
  12. minimum amount of energy need to start a chemical reaction
  13. increases the reaction rate by lowering the activation energy needed
Down
  1. a change in matter that produces one or more substances
  2. material used to decrease the rate of a chemical reaction
  3. reaction that releases energy in the form of heat
  4. during a chemical reaction, matter is neither created or destroyed
  5. 2 or more elements or compounds combine to make a more complex substance
  6. help reactions occur at body temperature
  7. the amount of substance in a given volume

20 Clues: matter doesn’t enter or leave • reaction in which energy is absorbed • help reactions occur at body temperature • the amount of substance in a given volume • substance that undergoes a chemical change • compounds break down into simpler products • matter can enter or escape the surroundings • the new substance formed from a chemical change • ...

Chemistry Vocabulary 2013-10-02

Chemistry Vocabulary crossword puzzle
Across
  1. a solid formed in a solution
  2. substance that slows or stops a chemical reaction
  3. electrons on the outermost energy level
  4. forms when two atoms are sharing electrons
  5. states that energy cannot be created or destroyed
  6. the amount of electrons that will fit on the first energy level
  7. a process in which one or more substances undergoes a change to make something new
  8. is determined by the number of protons in an atom
  9. charged particles that form from chemical reactions
  10. uses chemical symbols and formulas to describe a chemical reaction
Down
  1. reaction where energy is given off
  2. substances formed in a chemical reaction
  3. force that holds two atoms together
  4. minimum amount of energy needed to start a reaction
  5. states that mass can not be created or destroyed
  6. substance that speeds up a reaction
  7. reaction where energy is absorbed
  8. starting material in a chemical reaction
  9. shorthand way to use chemical symbols and numbers

19 Clues: a solid formed in a solution • reaction where energy is absorbed • reaction where energy is given off • force that holds two atoms together • substance that speeds up a reaction • electrons on the outermost energy level • substances formed in a chemical reaction • starting material in a chemical reaction • forms when two atoms are sharing electrons • ...

Chemical Reactions 2020-02-06

Chemical Reactions crossword puzzle
Across
  1. A solid that forms from a solution during a chemical reaction.
  2. combination
  3. A system in which no matter is allowed to enter or leave
  4. A reaction that releases energy in the form of heat
  5. Energy needed to get a reaction started
  6. the process by which one or more substances change to produce one or more different substances
  7. A substance that slows down or stops a chemical reaction
  8. A chemical substance that is present at the start of a chemical reaction
  9. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  10. the principle stating that matter is not created or destroyed during a chemical reaction
Down
  1. A reaction in which energy is absorbed
  2. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  3. A system in which matter can enter from or escape to the surroundings.
  4. The elements or compounds produced by a chemical reaction.
  5. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  6. A chemical reaction that breaks down compounds into simpler products.
  7. substance that speeds up the rate of a chemical reaction

17 Clues: combination • A reaction in which energy is absorbed • Energy needed to get a reaction started • A reaction that releases energy in the form of heat • A system in which no matter is allowed to enter or leave • substance that speeds up the rate of a chemical reaction • A substance that slows down or stops a chemical reaction • ...

Chemical Reactions and Equations - Owais Khan 2024-04-30

Chemical Reactions and Equations - Owais Khan crossword puzzle
Across
  1. : M g + 2 H C l → M g C l 2 + H 2.
  2. Reaction: also known as a synthesis reaction in chemistry
  3. : substance made up of different elements joined together by a chemical bond.
  4. : process by which electric current is passed through a substance to effect a chemical change.
  5. : addition of Oxygen
  6. : CaCO₃
  7. : any chemical reaction that absorbs heat from its environment.
  8. : H₂O
  9. : A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas.
  10. :Ca(OH)₂
Down
  1. : loss of Oxygen in a reaction.
  2. Reaction :a reaction in which a compound breaks down into two or more simpler substances
  3. : PbO
  4. : Formation of insoluble substance
  5. : chemical element of the alkali metal group,very soft silvery-white metal.
  6. : an equation where the number of atoms of each type in the reaction is the same on both reactants and product sides.
  7. : a round bottomed crucible shaped dish which is made of porcelain used for the chemical reactions
  8. : it is the third-most abundant element in the universe
  9. : a chemical reaction that releases energy by light or heat.
  10. : chemical substances that react together to form a new substance during a chemical reaction.

20 Clues: : PbO • :Ca(OH)₂ • : CaCO₃ • : H₂O • : addition of Oxygen • : loss of Oxygen in a reaction. • : M g + 2 H C l → M g C l 2 + H 2. • : Formation of insoluble substance • Reaction: also known as a synthesis reaction in chemistry • : it is the third-most abundant element in the universe • : a chemical reaction that releases energy by light or heat. • ...

Chemical Reactions Vocab 2022-11-29

Chemical Reactions Vocab crossword puzzle
Across
  1. substances that undergo a chemical change
  2. amount of a substance in a given volume
  3. _____change: any change that alters the form or appearance of a substance without changing it into a different substance
  4. biological catalysts that help speed up chemical reactions
  5. number placed in front of chemical formula in equation
  6. new substances that form in a chemical reaction
  7. _____replacement: when a single element replaces another single element in a compound
  8. material used to decrease rate of chemical reaction
  9. increases the reaction rate by lowering the activation energy needed
Down
  1. _____replacement: when two elements exchange places in a reactions
  2. _____ change: change of matter that produces new substances
  3. _____energy: minimum amount of energy needed to start a chemical reaction
  4. _____system: matter can enter from or escape to the surroundings
  5. solid that forms from liquids during a chemical reaction
  6. _____reaction: reaction that releases energy
  7. _____reaction: reaction that absorbs energy
  8. reaction when compounds break down into simpler substances
  9. two or more elements combine to make a more complex substance
  10. _____system: matter does enter or leave

19 Clues: amount of a substance in a given volume • _____system: matter does enter or leave • substances that undergo a chemical change • _____reaction: reaction that absorbs energy • _____reaction: reaction that releases energy • new substances that form in a chemical reaction • material used to decrease rate of chemical reaction • ...

Chemical reactions 2023-11-08

Chemical reactions crossword puzzle
Across
  1. number in front of a compound in a chemical reaction used for balancing
  2. compounds at the beginning of a chemical reaction
  3. more particles means more reaction
  4. Metal and oxygen reacting
  5. bright visual effect of some chemical reactions
  6. mass is ____________ over the course of a chemical reaction
Down
  1. compounds at the end of a chemical reaction
  2. number below an element symbol telling how many of that atom
  3. when an ACID and BASE combine
  4. measure of the heat change in a chemical reaction
  5. Nuclei collide less energy produced
  6. when you add numbers to make sure both sides have the same number of atoms
  7. Nuclei split, most energy, possible chain reaction
  8. what happens when you have a flame
  9. burning produces light and heat
  10. evidence of a chemical reaction that you smell with a waft
  11. arrow in the middle of a chemical reaction

17 Clues: Metal and oxygen reacting • when an ACID and BASE combine • burning produces light and heat • what happens when you have a flame • more particles means more reaction • Nuclei collide less energy produced • arrow in the middle of a chemical reaction • compounds at the end of a chemical reaction • bright visual effect of some chemical reactions • ...

chemical reaction vocab 2018-02-21

chemical reaction vocab crossword puzzle
Across
  1. attached
  2. atomic structure
  3. taking place of molecule
  4. negative charged ion
  5. sharing of electrons
  6. formed by oppistley charged ions
  7. colorless oderless gas
  8. substance
  9. rule
Down
  1. postive charged ion
  2. interation
  3. action performed
  4. pressed permanently
  5. conserved propertiy
  6. equal
  7. deformable
  8. seperation from negative to positive
  9. two or more elements
  10. dot diagram

19 Clues: rule • equal • attached • substance • interation • deformable • dot diagram • action performed • atomic structure • postive charged ion • pressed permanently • conserved propertiy • negative charged ion • sharing of electrons • two or more elements • colorless oderless gas • taking place of molecule • formed by oppistley charged ions • seperation from negative to positive

Chemical Reaction Review 2022-06-01

Chemical Reaction Review crossword puzzle
Across
  1. something that can be observed about a substance, such as color, smell, or boiling point
  2. letters and numbers showing the types and number of atoms that repeat to makeup a substance
  3. an ending substance that is made during a chemical reaction
  4. able to cause damage
  5. a substance that is added to soil to help plants grow
  6. small scale to view atoms
  7. a process in which atoms rearrange to form new substances
  8. a structure formed by repeating groups of atoms linked together in a large network
  9. Groups of atoms repeat to make up a _____
Down
  1. a group of atoms joined together in a particular way
  2. to change the order or position of something
  3. large scale
  4. the temperature at which a substance changes from the liquid phase to the gas phase
  5. the relative size of things
  6. something that is made of all the same atoms or groups of atoms
  7. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
  8. the temperature at which a substance changes from the solid phase to the liquid phase
  9. the tiny pieces that all matter—all the stuff in the world—is made of
  10. substances have different properties
  11. a starting substance that is part of a chemical reaction

20 Clues: large scale • able to cause damage • small scale to view atoms • the relative size of things • substances have different properties • Groups of atoms repeat to make up a _____ • to change the order or position of something • a group of atoms joined together in a particular way • a substance that is added to soil to help plants grow • ...

Chapter 6 crossword 2013-11-25

Chapter 6 crossword crossword puzzle
Across
  1. a chemical reaction in which heat is released to the surroundings
  2. a type of protein that speeds up metabolic reactions in plants and animals without being permanently changed or destroyed
  3. a substance that changes the rate of a chemical reaction without being consumed or changed significantly
  4. a reaction in which one element or radical takes the place of another element or radical in a compound
  5. a part, substance,or element that lies beneath and supports another part, substance, or element; the reactant in reactions catalyzed by enzymes
  6. the relative number of moles of the substances required to produce a given amount of product in a chemical reaction
  7. a reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
  8. an organic group that has one or more electrons available for bonding
  9. a substance that forms in a chemical reaction
Down
  1. the energy released when a chemical compound reacts to produce new compounds
  2. a reaction in which two or more substances combine to form a new compound
  3. a state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged
  4. the oxidation reaction of an organic compound, in which heat is released
  5. any chemical change in which one species is oxidized (loses electrons) and another species is reduced (gains electrons) also called redox reaction
  6. a chemical reaction that requires heat
  7. a reaction in which a single compound breaks down to form two or more simpler substances
  8. the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water
  9. a substance or molecule that participates in a chemical reaction
  10. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products

19 Clues: a chemical reaction that requires heat • a substance that forms in a chemical reaction • a substance or molecule that participates in a chemical reaction • a chemical reaction in which heat is released to the surroundings • an organic group that has one or more electrons available for bonding • ...

Chemistry Vocab 2016-01-05

Chemistry Vocab crossword puzzle
Across
  1. is just a way of using the formulas to indicate the chemicals that were involved in the chemical reaction
  2. is a chemical reaction that results in an equilibrium mixture of reactants and products
  3. give the number of molecules (or atoms) involved in the reaction
  4. is a solution in which the solvent is water
  5. is a useful guide for predicting the products of metal displacement reactions
  6. a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
  7. a substance participating in a chemical reaction, especially one present at the start of the reaction.
  8. is a reaction in which one of the reactants is oxygen. ▪ The other reactant is usually a hydrocarbon.
  9. is the symbolic representation of a chemical reaction in the form of symbols and formulate
  10. is a substances that speeds up a chemical reaction; but is not consumed by the reaction
  11. a substance obtained from another substance through chemical change.
Down
  1. is a type of oxidation-reduction chemical reaction when an element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
  2. a chemical equation shows the chemical formulas of substances that are reacting and the substances that are produced. The number of atoms of reactants and products need to be balanced.
  3. is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product).
  4. is an ion that exists as a reactant and a product in a chemical equation.
  5. a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds
  6. are equations that show only the soluble, strong electrolytes reacting (these are represented as ions) and omit the spectator ions, which go through the reaction unchanged.
  7. is the amount of product obtained in a chemical reaction

18 Clues: is a solution in which the solvent is water • is the amount of product obtained in a chemical reaction • give the number of molecules (or atoms) involved in the reaction • a substance obtained from another substance through chemical change. • is an ion that exists as a reactant and a product in a chemical equation. • ...

Stoichiometry 2017-02-04

Stoichiometry crossword puzzle
Across
  1. the simplest form of the formula
  2. What type of reaction? O + H -> H O
  3. the mass of an atom
  4. these problems tell you how much of any given product you get by reacting any given amount of reactants
  5. the true formula
  6. the mass of one mole of the substance
  7. What type of reaction? 2HgO -> 2Hg + O
  8. representation of a chemical reaction using symbols, numbers, etc.
  9. In a chemical equation, these substances are right of the arrow
  10. 6.02 x 10
  11. What type of reaction? FeS + 2HBr -> 1FeBr + H S
  12. using a balanced chemical equation to calculate the amount of reactants and products is called
  13. a type of reaction where bonds between atoms are formed or broken
Down
  1. What type of reaction? C H O + 4O -> 3CO + 3H O
  2. Is the following chemical equation balanced or unbalanced? 4Al + 3O -> 2Al O
  3. the total mass of the empirical formula
  4. 6.02 x 10
  5. percentage of each element in a compound
  6. What type of reaction? 2Al + 6HCl -> 2AlCl + 3H
  7. the amount of a substance actually produced at the end of a chemical reaction
  8. the number preceding the substances in a chemical equation
  9. the measure of the efficiency of a chemical reaction calculated by dividing the theoretical yield by the actual yield and multiplied by a 100
  10. In a chemical equation, these substances are left of the arrow

23 Clues: 6.02 x 10 • 6.02 x 10 • the true formula • the mass of an atom • the simplest form of the formula • What type of reaction? O + H -> H O • the mass of one mole of the substance • What type of reaction? 2HgO -> 2Hg + O • the total mass of the empirical formula • percentage of each element in a compound • What type of reaction? C H O + 4O -> 3CO + 3H O • ...

Stoichiometry 2017-02-04

Stoichiometry crossword puzzle
Across
  1. the mass of an atom
  2. the number preceding the substances in a chemical equation
  3. using a balanced chemical equation to calculate the amount of reactants and products is called
  4. representation of a chemical reaction using symbols, numbers, etc.
  5. the simplest form of the formula
  6. What type of reaction? 2HgO -> 2Hg + O
  7. In a chemical equation, these substances are left of the arrow
  8. the amount of a substance actually produced at the end of a chemical reaction
  9. What type of reaction? C H O + 4O -> 3CO + 3H O
  10. 6.02 x 10
Down
  1. the mass of one mole of the substance
  2. In a chemical equation, these substances are right of the arrow
  3. these problems tell you how much of any given product you get by reacting any given amount of reactants
  4. percentage of each element in a compound
  5. the total mass of the empirical formula
  6. What type of reaction? 2Al + 6HCl -> 2AlCl + 3H
  7. What type of reaction? O + H -> H O
  8. a type of reaction where bonds between atoms are formed or broken
  9. the measure of the efficiency of a chemical reaction calculated by dividing the theoretical yield by the actual yield and multiplied by a 100
  10. the true formula
  11. 6.02 x 10
  12. What type of reaction? FeS + 2HBr -> 1FeBr + H S
  13. Is the following chemical equation balanced or unbalanced? 4Al + 3O -> 2Al O

23 Clues: 6.02 x 10 • 6.02 x 10 • the true formula • the mass of an atom • the simplest form of the formula • What type of reaction? O + H -> H O • the mass of one mole of the substance • What type of reaction? 2HgO -> 2Hg + O • the total mass of the empirical formula • percentage of each element in a compound • What type of reaction? 2Al + 6HCl -> 2AlCl + 3H • ...

Stoichiometry 2017-02-04

Stoichiometry crossword puzzle
Across
  1. 6.02 x 10
  2. Is the following chemical equation balanced or unbalanced? 4Al + 3O -> 2Al O
  3. the mass of an atom
  4. using a balanced chemical equation to calculate the amount of reactants and products is called
  5. What type of reaction? 2Al + 6HCl -> 2AlCl + 3H
  6. the number preceding the substances in a chemical equation
  7. percentage of each element in a compound
  8. the mass of one mole of the substance
  9. the true formula
  10. What type of reaction? FeS + 2HBr -> 1FeBr + H S
Down
  1. the total mass of the empirical formula
  2. In a chemical equation, these substances are right of the arrow
  3. What type of reaction? O + H -> H O
  4. representation of a chemical reaction using symbols, numbers, etc.
  5. the amount of a substance actually produced at the end of a chemical reaction
  6. In a chemical equation, these substances are left of the arrow
  7. these problems tell you how much of any given product you get by reacting any given amount of reactants
  8. What type of reaction? C H O + 4O -> 3CO + 3H O
  9. What type of reaction? 2HgO -> 2Hg + O
  10. the measure of the efficiency of a chemical reaction calculated by dividing the theoretical yield by the actual yield and multiplied by a 100
  11. the simplest form of the formula
  12. a type of reaction where bonds between atoms are formed or broken
  13. 6.02 x 10

23 Clues: 6.02 x 10 • 6.02 x 10 • the true formula • the mass of an atom • the simplest form of the formula • What type of reaction? O + H -> H O • the mass of one mole of the substance • What type of reaction? 2HgO -> 2Hg + O • the total mass of the empirical formula • percentage of each element in a compound • What type of reaction? C H O + 4O -> 3CO + 3H O • ...

Chapter 5 Vocab 2024-11-25

Chapter 5 Vocab crossword puzzle
Across
  1. Energy the minimum amount of energy needed to start a chemical reaction.
  2. a number placed in front of an element symbol or chemical formula in an equation.
  3. of Conservation of Mass states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the reaction.
  4. a chemical reaction that releases thermal energy.
  5. Equation- a description of a reaction using element symbols and chemical formulas.
  6. a substance that increases reaction rate by lowering the activation energy of a reaction.
  7. a type of chemical reaction in which two or more substances combine and form one compound.
  8. the substances produced by the chemical reaction.
  9. a substance that slows, or even stops, a chemical reaction.
Down
  1. the negative ions in two compounds switch places, forming two new compounds.
  2. one element replaces another element in a compound.
  3. chemical reactions that absorb thermal energy.
  4. Reaction- a process in which atoms of one or more substances rearrange to form one or more new substances.
  5. a chemical reaction in which a substance combines with oxygen and releases energy.
  6. the starting substances in a chemical reaction.
  7. a catalyst that speeds up chemical reactions in living cells.
  8. one compound breaks down and forms two or more substances.

17 Clues: chemical reactions that absorb thermal energy. • the starting substances in a chemical reaction. • a chemical reaction that releases thermal energy. • the substances produced by the chemical reaction. • one element replaces another element in a compound. • one compound breaks down and forms two or more substances. • ...

Physical Science Semester 1 Project 2022-12-14

Physical Science Semester 1 Project crossword puzzle
Across
  1. Written form of a chemical reaction
  2. Formed the basis of atomic theory as we know it today
  3. determined that electrons occupy set energy levels
  4. chemical reaction that releases energy
  5. electrons are given and taken
  6. Discovered the nucleus
  7. Discovered the electron
  8. electrons are shared
  9. Matter cannot be created or destroyed
  10. minimum energy required to start a chemical reaction
Down
  1. Substance formed during the reaction
  2. electrons flow in an electron sea
  3. Substance Undergoes change
  4. organized plan for gathering, organizing, and communicating information
  5. chemical reaction that absorbs energy
  6. speed of any chemical reaction
  7. Philosopher from Ancient Greece
  8. electrons in the outermost shell
  9. amount of energy required to pull two atoms apart
  10. mass of an individual atom

20 Clues: electrons are shared • Discovered the nucleus • Discovered the electron • Substance Undergoes change • mass of an individual atom • electrons are given and taken • speed of any chemical reaction • Philosopher from Ancient Greece • electrons in the outermost shell • electrons flow in an electron sea • Written form of a chemical reaction • Substance formed during the reaction • ...

leandra williams 2017-02-27

leandra williams crossword puzzle
Across
  1. replacement A type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
  2. the process or result of oxidizing or being oxidized
  3. A substance to be deposited in solid form from a solution.
  4. a new material formed in a chemical reaction
  5. rapid chemical combination of a substance with oxygen, involving the production of heat and light.
  6. a substance that takes part in a change during a reaction
  7. A chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
  8. A synthesis reaction is one of the most common types of chemical reactions
  9. compound a chemical compound that contains exactly two different elements
  10. is the amount of product obtained in a chemical reaction.
Down
  1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  2. equation the symbolic representation of a chemical reaction in the form of symbols
  3. A the separation of a chemical compound into elements or simpler compounds
  4. consisting of two atoms
  5. A numerical measure of a physical property that is constant for a system specified conditions.
  6. consisting of many atoms
  7. A half-reaction in which a chemical species decreases its oxidation number
  8. of or containing water, typically as a solvent or medium.
  9. replacement A type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.

19 Clues: consisting of two atoms • consisting of many atoms • a new material formed in a chemical reaction • the process or result of oxidizing or being oxidized • a substance that takes part in a change during a reaction • of or containing water, typically as a solvent or medium. • is the amount of product obtained in a chemical reaction. • ...

Stoichiometry 2017-02-04

Stoichiometry crossword puzzle
Across
  1. What type of reaction? O + H -> H O
  2. the mass of one mole of the substance
  3. Is the following chemical equation balanced or unbalanced? 4Al + 3O -> 2Al O
  4. using a balanced chemical equation to calculate the amount of reactants and products is called
  5. the simplest form of the formula
  6. In a chemical equation, these substances are right of the arrow
  7. What type of reaction? C H O + 4O -> 3CO + 3H O
  8. the number preceding the substances in a chemical equation
  9. percentage of each element in a compound
  10. What type of reaction? FeS + 2HBr -> 1FeBr + H S
  11. a type of reaction where bonds between atoms are formed or broken
Down
  1. 6.02 x 10
  2. In a chemical equation, these substances are left of the arrow
  3. the mass of an atom
  4. the true formula
  5. What type of reaction? 2Al + 6HCl -> 2AlCl + 3H
  6. What type of reaction? 2HgO -> 2Hg + O
  7. 6.02 x 10
  8. representation of a chemical reaction using symbols, numbers, etc.
  9. the amount of a substance actually produced at the end of a chemical reaction
  10. the measure of the efficiency of a chemical reaction calculated by dividing the theoretical yield by the actual yield and multiplied by a 100
  11. these problems tell you how much of any given product you get by reacting any given amount of reactants
  12. the total mass of the empirical formula

23 Clues: 6.02 x 10 • 6.02 x 10 • the true formula • the mass of an atom • the simplest form of the formula • What type of reaction? O + H -> H O • the mass of one mole of the substance • What type of reaction? 2HgO -> 2Hg + O • the total mass of the empirical formula • percentage of each element in a compound • What type of reaction? 2Al + 6HCl -> 2AlCl + 3H • ...

Vocabulary chapter 18 and 19 2021-04-12

Vocabulary chapter 18 and 19 crossword puzzle
Across
  1. molecule that shares electrons equally and does not have opopositely charged ends
  2. the mass in grams of one mole of a substance
  3. in a chemical reaction, the new substance or substances formed
  4. reaction in which two ionic compound in solution are combined, can produce a precipitate, water, or gas
  5. a covalent bond in which electrons are shared equally by both atoms
  6. chemical shorthand that uses symbols to tell what elements are in a compound and their ratios
  7. SI unit for quantity equal to 6.022x10^23 units of that substance
  8. chemical reaction in which one element replaces another element in a compound
  9. the force of attraction between atoms when they share electrons
  10. chemical reaction that requires thermal energy in order to proceed
  11. shorthand method used to describe chemical reactions using chemical formulas and other symbols
  12. number in a chemical equation that represents the number of units of each substance taking part in a chemical reaction
Down
  1. process in which one or more substances are changed into new substances
  2. chemical equation with the same number of atoms of each element on both sides of the equation
  3. a type of chemical reaction that occurs when a substanc reacts with oxygen to produce energy in the form of heat and light
  4. chemical reaction in which one substance breaks down into two or more substances
  5. a neutral particle that forms as a result of electron sharing among atoms
  6. a neutral molecule in which unequal electron sharing results in a slightly positive end and slightly negative end
  7. chemical reaction in which two or more substances combine to form a different substance
  8. charged particle that has either more or fewer electons than protons
  9. force that holds atoms together in a compound
  10. chemical reaction in which energy is primarily given off in the form of thermal energy
  11. in a chemical reaction, the substance that reacts

23 Clues: the mass in grams of one mole of a substance • force that holds atoms together in a compound • in a chemical reaction, the substance that reacts • in a chemical reaction, the new substance or substances formed • the force of attraction between atoms when they share electrons • SI unit for quantity equal to 6.022x10^23 units of that substance • ...

Chemistry 2025-08-24

Chemistry crossword puzzle
Across
  1. – A combination of different substances that are not chemically bonded (e.g. air, saltwater).
  2. Reaction – A process where atoms rearrange to form new substances.
  3. of Mass – Atoms are not lost or created in a chemical reaction; they are rearranged.
  4. Bond – A force that holds atoms together in molecules or compounds.
  5. – A tiny particle with a negative charge that moves around the nucleus.
  6. Change – A change where a new substance is formed (e.g. burning, rusting, baking). Usually irreversible.
  7. of Chemical Change – Gas produced, colour change, temperature change, precipitate (solid) forms.
  8. – A pure substance made of only one type of atom (e.g. gold, oxygen).
  9. – A substance that speeds up a chemical reaction without being used up.
  10. new substances formed by the chemical reaction
  11. – A particle in the nucleus with no charge (neutral).
  12. substances present at the start of a chemical reaction, used up during the reaction.
Down
  1. – The new substances made in a chemical reaction.
  2. – Two or more atoms bonded together (e.g. O₂, H₂O).
  3. – The starting substances in a chemical reaction.
  4. Change – A change where no new substance is formed (e.g. melting ice, dissolving sugar). Usually reversible.
  5. – A substance made when two or more different elements are chemically bonded (e.g. CO₂, NaCl).
  6. Theory – Reactions happen when particles collide with enough energy.
  7. of Reaction – How fast a chemical reaction happens.
  8. – The centre of the atom that contains protons and neutrons.
  9. – The smallest building block of matter; makes up everything.
  10. Effect – Heating particles gives them more energy → more collisions → faster reactions.
  11. – A particle in the nucleus with a positive charge.

23 Clues: new substances formed by the chemical reaction • – The new substances made in a chemical reaction. • – The starting substances in a chemical reaction. • – Two or more atoms bonded together (e.g. O₂, H₂O). • of Reaction – How fast a chemical reaction happens. • – A particle in the nucleus with a positive charge. • – A particle in the nucleus with no charge (neutral). • ...

Chemical Recations 2019-11-18

Chemical Recations crossword puzzle
Across
  1. replacement a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
  2. reaction, a chemical reaction where the reactants form products that, in turn, react together to give the reactants back.
  3. ion an ion that exists in the same form on both the reactant and product sides of a chemical reaction.
  4. solution any solution in which water (H2O) is the solvent.
  5. when two or more substances, or reactants, combine with each other to form a new product.
  6. a substance that speeds up a chemical reaction, but is not consumed by the reaction
  7. equation a chemical equation that does not indicate the relative amounts of the reactants and products
  8. a type of chemical reaction in which one reactant yields two or more products.
  9. equation a statement containing chemical symbols, used to show the changes that happen during a particular chemical reaction
  10. the amount of product obtained in a chemical reaction.
  11. replacement a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.
Down
  1. when two or more substances, or reactants, combine with each other to form a new product.
  2. substances initially present in a chemical reaction that are consumed during the reaction to make products.
  3. equation 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 for both the reactants and the products.
  4. the numbers in front of the formulas.
  5. a substance that is formed as the result of a chemical reaction.
  6. ionic equation a chemical equation for a reaction that lists only those species participating in the reaction.

17 Clues: the numbers in front of the formulas. • the amount of product obtained in a chemical reaction. • solution any solution in which water (H2O) is the solvent. • a substance that is formed as the result of a chemical reaction. • a type of chemical reaction in which one reactant yields two or more products. • ...

Science Stuff 2023-12-07

Science Stuff crossword puzzle
Across
  1. a chemical reaction that has to do with movement
  2. motion, force is greater than 0
  3. a chemical reaction that has to do with food and batteries
  4. you can find it using FMA
  5. how fast a object is going
  6. the little number on a chemical equation
  7. motion, force is equal to 0
  8. silver and grey in color, luster, malleable, ductile
  9. negative particles of a atom
  10. a chemical reaction that has to do with heat
  11. no charge particles of a atom
  12. distance divided by time
Down
  1. a chemical reaction that has to do with atoms
  2. a chemical reaction that has to do with electricity
  3. 50/50 malleable, 50/50 luster, 50/50 ductile
  4. a object at rest stays at rest and a object in motion stays in motion unless an unbalanced force stops it
  5. no luster, nonmalleable, not ductile
  6. any action will have a equal and opposite reaction
  7. speeding up or speeding down
  8. the big number on a chemical equation
  9. Speed with a direction
  10. verticle on the periodic table
  11. positive particles of a atom
  12. a chemical reaction that has to do with light
  13. horizontal on the periodic table

25 Clues: Speed with a direction • distance divided by time • you can find it using FMA • how fast a object is going • motion, force is equal to 0 • speeding up or speeding down • positive particles of a atom • negative particles of a atom • no charge particles of a atom • verticle on the periodic table • motion, force is greater than 0 • horizontal on the periodic table • ...

chemisty 2017-11-09

chemisty crossword puzzle
Across
  1. reaction: a reaction that takes place when two or more substance react to form new substances
  2. system: an experiment in which all reactants and all products of a chemical reaction are accounted for
  3. reaction: chemical reaction that absorbs energy
  4. amount of mass in a given volume of a substance
  5. slow chemical change that occurs when oxygen in the air reacts with a metal
  6. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  7. 17 elements in the periodic table; the most reactive non-metals
  8. respiration: chemical reaction that takes place in cells; food (sugar) reacts with oxygen to produce energy, water, and carbon dioxide p
  9. change of state from a liquid to a gas
  10. catalyst involved in chemical reactions in living things
Down
  1. chemical combination of two or more elements in a specific ratio
  2. shell: orbit of electrons around the nucleus of an atom
  3. description of a solid that can be stretched into a long wire
  4. change of state from a gas to a solid
  5. of mass: principle that matter is not created or destroyed in a chemical reaction; the mass of the products always equals the mass of the reactants
  6. substance that helps a chemical reaction to proceed more quickly
  7. ability of a substance to conduct electricity or heat
  8. change of state from a liquid to a solid
  9. substance: that helps a chemical reaction to proceed more quickly
  10. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance

20 Clues: change of state from a gas to a solid • change of state from a liquid to a gas • change of state from a liquid to a solid • reaction: chemical reaction that absorbs energy • amount of mass in a given volume of a substance • ability of a substance to conduct electricity or heat • shell: orbit of electrons around the nucleus of an atom • ...

Aditya Santosh 10T chemistry 2024-05-05

Aditya Santosh 10T chemistry crossword puzzle
Across
  1. a solid substance that forms from a chemical reaction in a solution
  2. the reaction after which a single compound is broken down into 2 or more chemical substance
  3. one of the least reactive substances, whose chemical symbol is Pt
  4. the reaction where a higher reactive substance displaces a less reactive one
  5. a part of decomposition reaction that requires electricity for the reaction to take place
  6. a chemical reaction in which a substance loses electrons changing its oxidation state
  7. a chemical reaction in which a substance gains electrons changing its oxidation state
  8. the substance(s) in a chemical reaction that undergo chemical changes to form products
Down
  1. the reaction after which two or more reactants forms a single product
  2. a chemical reaction that absorbs energy in the form of heat from its surroundings
  3. one of the most reactive substances, whose chemical symbol is K
  4. A part of decomposition reaction that requires light for the reaction to take place
  5. The product formed in the following reaction:CaO+H2O—————->Ca(OH)2
  6. A chemical reaction that releases energy in the form of heat to its surroundings
  7. a reaction where electrons are transferred causing changes in oxidation states
  8. the substances formed as a result of a chemical reaction

16 Clues: the substances formed as a result of a chemical reaction • one of the most reactive substances, whose chemical symbol is K • one of the least reactive substances, whose chemical symbol is Pt • The product formed in the following reaction:CaO+H2O—————->Ca(OH)2 • a solid substance that forms from a chemical reaction in a solution • ...

Chapter 8 Crossword 2023-03-09

Chapter 8 Crossword crossword puzzle
Across
  1. chemical reaction involving the transfer of electrons
  2. reaction in which one element replaces another in a compound
  3. reaction in which a solid forms and separates from the solution as a solid
  4. chemical equation showing the complete forms of all reactants and products
  5. chemical reaction involving oxygen as one of the reactants that produces enough heat to cause a flame
  6. an ionic compound
  7. occurs when a compound is broken down into simpler substances
  8. reaction in which ions in two compounds exchange places forming two new compounds
  9. acid that completely dissociates to produce H+ ions in solution
  10. a solid that dissolves to such a small degree, it isn't visible by the naked eye
Down
  1. substance that dissolves in water, dissociating completely into ions
  2. chemical equation for a reaction in solution representing all strong electrolytes
  3. reaction forming water- acid+water
  4. solid that forms in a precipitation reaction
  5. base that completely dissociates to produce OH- ions in a solution
  6. chemical reaction where a compound is formed from simpler materials
  7. ions present in solution that don't participate directly in a reaction
  8. chemical equation for a reaction in solution only showing components directly involved in the reaction
  9. substance producing hydrogen ions in a solution
  10. solid that readily dissolves in water
  11. substance producing hydroxide ions in a solution

21 Clues: an ionic compound • reaction forming water- acid+water • solid that readily dissolves in water • solid that forms in a precipitation reaction • substance producing hydrogen ions in a solution • substance producing hydroxide ions in a solution • chemical reaction involving the transfer of electrons • reaction in which one element replaces another in a compound • ...

Bonding and Reactions 2023-12-04

Bonding and Reactions crossword puzzle
Across
  1. The substances formed during a chemical reaction.
  2. A reaction in which a single compound breaks down into two or more elements or compounds.
  3. Elements in the same _______ on the periodic table have the same number of valence electrons.
  4. A _______ replacement reaction occurs when the atoms of one element replace the atoms of another element.
  5. A _______ replacement reaction is when an exchange of ions occurs between two compounds.
  6. Type of bond formed when one or more electrons are transferred from one atom to another.
  7. Ionic bonds form between _____ and nonmetals.
  8. A substance that slows down a chemical reaction.
  9. A mixture of two or more metals that has different properties.
  10. A positive ion.
  11. A reaction that releases energy.
  12. One of the signs that a chemical reaction occurred _________ change..
  13. Type of bond that forms when numerous electrons are shared between atoms creating a “sea” of electrons.
  14. Bonding occurs so that an element can get _______ valence electrons.
  15. A negative ion.
  16. Covalent bonds only form between __________.
  17. A chemical reaction in which two or more substances react to produce a single product.
Down
  1. A solid produced during a chemical reaction in a solution.
  2. The number written after an element indicating how many atoms there are.
  3. This number indicates the charge and number of electrons gained or lost.
  4. A substance that speeds up a chemical reaction.
  5. A reaction where Oxygen combines with a substance and releases energy.
  6. The production of this might be a sign that a chemical reaction occurred.
  7. A change in ______ is one of the signs that a chemical reaction occurred (temperature, light, sound).
  8. A reaction that absorbs energy.
  9. The starting substances in a chemical reaction.
  10. A bond formed when electrons are shared between atoms.
  11. The number written in front of a reactant or product.

28 Clues: A positive ion. • A negative ion. • A reaction that absorbs energy. • A reaction that releases energy. • Covalent bonds only form between __________. • Ionic bonds form between _____ and nonmetals. • A substance that speeds up a chemical reaction. • The starting substances in a chemical reaction. • A substance that slows down a chemical reaction. • ...

Chp 19 Chemical Reactions Vocabulary 2023-04-11

Chp 19 Chemical Reactions Vocabulary crossword puzzle
Across
  1. -reaction in which two ionic compounds in solution are combined, can produce a precipitate, water, or a gas
  2. -SI unit for quantity equal to 6.022 x 10^23 units of that substance
  3. -the gain of electrons by the atoms of a substance in a chemical reaction
  4. -reaction in which one element replaces another element in a compound
  5. -the mass in grams of one mole of a substance
  6. -reaction that requires energy input in the form of light, thermal energy or electricity in order to proceed
  7. -the loss of electrons from the atoms of a substance in a chemical reaction
  8. -process in which one or more substances are changed into new substances
  9. -shorthand method used to describe chemical reactions using chemical formulas and other symbols
  10. -reaction in which two or more substances combine to form a different substance
Down
  1. -in a chemical reaction, the substance that reacts
  2. -number in a chemical equation that represents the number of units of each substance taking part in a chemical reaction
  3. -reaction in which one substance breaks down into two or more substances
  4. -reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light
  5. -in a chemical reaction, the new substance or substances formed
  6. -reaction that releases some form of energy, such as light or thermal energy
  7. -insoluble compound that is formed in a solution during a double-displacement reaction
  8. -reaction in which energy is primarily given off in the form of thermal energy
  9. -reaction that requires thermal energy to proceed

19 Clues: -the mass in grams of one mole of a substance • -reaction that requires thermal energy to proceed • -in a chemical reaction, the substance that reacts • -in a chemical reaction, the new substance or substances formed • -SI unit for quantity equal to 6.022 x 10^23 units of that substance • -reaction in which one element replaces another element in a compound • ...

science 2024-05-08

science crossword puzzle
Across
  1. A substance Able to increase the rate of chemical reaction
  2. Site The enzyme where the chemical reaction occures
  3. The thing that changes in reactions
  4. A new material formed in a reaction
  5. acid Molecules used by living things
  6. Molecules that contain sugar
  7. A molecule that contains Nitrogen
  8. Fatty compounds that do lots of things
  9. A sugar replacing ribose
  10. A chemical element
  11. Chemical found in living organisms
Down
  1. acid Chains of natural Acids
  2. acid They play essential roles in all cells
  3. A molecule that reacts with Enzymes
  4. A protein that helps speed up the reaction
  5. A chemical reaction of a compound with water
  6. large organic compounds
  7. atoms that bond together to form structures
  8. Energy Amount of energy needed to start a reaction
  9. A substance consisting of large monomers

20 Clues: A chemical element • large organic compounds • A sugar replacing ribose • Molecules that contain sugar • A molecule that contains Nitrogen • acid Chains of natural Acids • Chemical found in living organisms • A molecule that reacts with Enzymes • The thing that changes in reactions • A new material formed in a reaction • Fatty compounds that do lots of things • ...

Reactions and Equations 2023-10-04

Reactions and Equations crossword puzzle
Across
  1. New substances that are produced as a result of a chemical reaction.
  2. Reaction in which electron is gained.
  3. Occurs when one substance breaks down to two or more substances
  4. amount of substance that contains 6.02 x 10 23 particles of that substance
  5. Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction
  6. Two or more substances combine to form a new substance.
  7. of Conservation of matter Mass (matter) can neither be created nor destroyed.
  8. a way to describe chemical reaction using chemical formulas and other symbols.
  9. reaction Two ionic compounds make two new ionic compounds by means of ion exchange.
Down
  1. A reaction that produces heat (Ex. Burning) and a product; usually carbon dioxide or carbon monoxide.
  2. mass The Mass of one mole of a substance in grams of a substance
  3. # written to the left of a formula in an equation representing # of units of each substances taking part in the chemical reaction.
  4. reaction Reaction in which electron is lost
  5. reaction A chemical reaction that consists of a compound and an elements. In this a metal replaces a metal and a nonmetal replaces nonmetal atom
  6. Starting substances that react during a chemical reaction
  7. reaction A reaction in which heat energy is released
  8. reaction A reaction in which heat energy is absorbed.

17 Clues: Reaction in which electron is gained. • reaction Reaction in which electron is lost • reaction A reaction in which heat energy is released • reaction A reaction in which heat energy is absorbed. • Two or more substances combine to form a new substance. • Starting substances that react during a chemical reaction • ...

Stoichiometry Crossword Puzzle 2025-05-11

Stoichiometry Crossword Puzzle crossword puzzle
Across
  1. An equation where the amount of atoms in a reaction is the same in both the reactants and the products
  2. A way of converting units of measurement
  3. A reactant that is fully used up in a chemical reaction
  4. A way to determine the concentration of a compound in a solution using the mass of the compound and the mass of the solution
  5. The efficiency of a chemical reaction, or what percent of a substance you got versus what you were supposed to get
  6. The amount of moles that go into a reaction versus how many moles come out of the reaction
  7. A reactant that is not fully used in a chemical reaction
Down
  1. The relationship between the space that something takes up and its mass
  2. An agent in a chemical reaction that donates electrons and causes the other agent in the reaction to be reduced
  3. Turning an observation into a numerical value
  4. Mass in grams of one mole of a substance
  5. A number that is placed in front of a compound in a chemical reaction to represent the amount of that compound that is in the reaction
  6. A way of counting similar to a gross
  7. The amount of a substance that you actually get out of a chemical reaction
  8. Taking the relationships between reactants and products to find the desired outcome of a problem
  9. The amount of a substance you should be able to get out of a chemical reaction
  10. A unit of concentration for solutions that is frequently used in chemistry, andis defined as the number of molesin a solute divided by the volume(In Liters)
  11. The abbreviation of "standard temperature and pressure"
  12. The chemical that you are testing using chemical analysis
  13. The amount of particles in one mole of anything

20 Clues: A way of counting similar to a gross • Mass in grams of one mole of a substance • A way of converting units of measurement • Turning an observation into a numerical value • The amount of particles in one mole of anything • A reactant that is fully used up in a chemical reaction • The abbreviation of "standard temperature and pressure" • ...

science 2024-05-08

science crossword puzzle
Across
  1. A substance Able to increase the rate of chemical reaction
  2. Site The enzyme where the chemical reaction occures
  3. The thing that changes in reactions
  4. A new material formed in a reaction
  5. acid Molecules used by living things
  6. Molecules that contain sugar
  7. A molecule that contains Nitrogen
  8. Fatty compounds that do lots of things
  9. A sugar replacing ribose
  10. A chemical element
  11. Chemical found in living organisms
Down
  1. acid Chains of natural Acids
  2. acid They play essential roles in all cells
  3. A molecule that reacts with Enzymes
  4. A protein that helps speed up the reaction
  5. A chemical reaction of a compound with water
  6. large organic compounds
  7. atoms that bond together to form structures
  8. Energy Amount of energy needed to start a reaction
  9. A substance consisting of large monomers

20 Clues: A chemical element • large organic compounds • A sugar replacing ribose • Molecules that contain sugar • A molecule that contains Nitrogen • acid Chains of natural Acids • Chemical found in living organisms • A molecule that reacts with Enzymes • The thing that changes in reactions • A new material formed in a reaction • Fatty compounds that do lots of things • ...

Unit 6 & 7 Crossword Puzzle 2013-12-12

Unit 6 & 7 Crossword Puzzle crossword puzzle
Across
  1. A formula that shows the ratio of elements present in the compound.
  2. A reaction where two or more chemical species combine to form a more complex product.
  3. The name given to the solid that is formed as a result of a precipitation reaction.
  4. A chemical reaction where one reactant is exchanged for one ion of a second reactant.
  5. The tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy.
  6. 6.022 x 1023
  7. The symbolic representation of a chemical reaction wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
  8. A list of metals ranked in order of decreasing reactivity to displace hydrogen gas from water and acid solutions.
Down
  1. A reactant in a chemical reaction that determines the amount of product produced.
  2. The study of the relationships or ratios between two or more substances undergoing a physical or chemical change.
  3. A solid compound that contains a definite percentage of bound water.
  4. A number equal to the sum of the atomic masses of the atoms in a molecule.
  5. A type of chemical reaction where a compound and an oxidant is reacted to produce heat and a new product.
  6. The law stating that in a chemical reaction, matter is neither gained nor lost.
  7. A chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions.
  8. An expression which states the number and type of atoms present in a molecule of a substance.
  9. A type of chemical reaction where one reactant yields two or more products.
  10. The concentration of an element in a compound or a component in a mixture.
  11. The ratio between the amounts in moles of any two compounds involved in a chemical reaction.
  12. A chemical mass unit of a substance.

20 Clues: 6.022 x 1023 • A chemical mass unit of a substance. • A formula that shows the ratio of elements present in the compound. • A solid compound that contains a definite percentage of bound water. • A number equal to the sum of the atomic masses of the atoms in a molecule. • The concentration of an element in a compound or a component in a mixture. • ...

Properties of Atoms & Molecules Unit 4 Vocabulary Review 2022-10-31

Properties of Atoms & Molecules Unit 4 Vocabulary Review crossword puzzle
Across
  1. symbolic representation of a chemical reaction
  2. reaction in which one substance takes the place of another
  3. the rate or speed at which a chemical reaction takes place
  4. atoms or molecules formed by a chemical reaction
  5. matter and energy cannot be created or destroyed; they can only change forms
  6. reaction in which energy is stored
  7. atoms or molecules present at the beginning of a chemical reaction
  8. reaction in which two substances trade places
  9. reaction in which energy is released
Down
  1. catalyst in a different phase from the reactants
  2. a molecule breaks apart into two or more atoms
  3. two or more atoms combine to form a molecule
  4. occurs when atomic bonds are formed or broken
  5. energy stored in a molecule's bonds
  6. catalyst involved in biological functions
  7. substance that increases the reaction rate by lowering activation energy
  8. catalyst in the same phase as the reactants
  9. the energy required for a chemical reaction to take place
  10. substance that slows down the reaction rate

19 Clues: reaction in which energy is stored • energy stored in a molecule's bonds • reaction in which energy is released • catalyst involved in biological functions • catalyst in the same phase as the reactants • substance that slows down the reaction rate • two or more atoms combine to form a molecule • occurs when atomic bonds are formed or broken • ...

chapter 6 by marshall benters :) 2013-12-03

chapter 6 by marshall benters :) crossword puzzle
Across
  1. a substance that forms in a chemical reaction
  2. reaction a reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
  3. reaction a chemical reaction that requires heat
  4. equilibrium a state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged
  5. reaction a reaction in which a single compound breaks down to form two or more simpler substances
  6. ratio the relative number of moles of the substances required to produce a given amount of product in a chemical reaction
  7. reaction the oxidation reaction of an organic compound, in which heat is released
  8. a substance that changes the rate of a chemical reaction without being consumed or changed significantly
Down
  1. a part, substance, or element that lies beneath and supports another part, substance, or element; the reactant in reactions catalyzed by enzymes
  2. a substance or molecule that participates in a chemical reaction
  3. an organic group that has one or more electrons available for bonding
  4. reaction a reaction in which one element or radical takes the place of another element or radical in a compound
  5. reaction any chemical change in which one species is oxidized (loses electrons) and another species is reduced (gains electrons); also called redox reaction
  6. the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water
  7. reaction a chemical reaction in which heat is released to the surroundings
  8. a type of protein that speeds up metabolic reactions in plants and animals without being permanently changed or destroyed
  9. reaction a reaction in which two or more substances combine to form a new compound

17 Clues: a substance that forms in a chemical reaction • reaction a chemical reaction that requires heat • a substance or molecule that participates in a chemical reaction • an organic group that has one or more electrons available for bonding • reaction a chemical reaction in which heat is released to the surroundings • ...

Chemical Reactions and equations 2024-05-07

Chemical Reactions and equations crossword puzzle
Across
  1. - A statement that summarizes a vast number of experimental observations and describes how nature behaves under certain conditions.
  2. - A reaction that absorbs heat.
  3. - The loss of electrons during a reaction by a molecule, atom, or ion.
  4. - The number written in front of a reactant or product in a chemical equation, indicating the relative quantity of the substance.
  5. - A substance that brings about a chemical reaction while it remains unchanged itself.
  6. - The amount of product obtained in a chemical reaction.
  7. - A type of chemical reaction in which two or more simple substances combine to form a more complex product.
  8. - A representation of a chemical reaction using symbols of the elements to indicate the amount of substance involved.
  9. - To make sure that the number of atoms of each element is the same on both sides of a chemical equation.
Down
  1. - The speed at which a chemical reaction occurs.
  2. - A substance that forms in a chemical reaction.
  3. - The process in which one or more substances are changed into one or more new substances.
  4. - A reaction that releases heat.
  5. - A substance that takes part in and undergoes change during a reaction.
  6. - A type of chemical reaction in which a single compound breaks down into two or more simpler substances.
  7. - A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  8. - The gain of electrons during a reaction by a molecule, atom, or ion.

17 Clues: - A reaction that absorbs heat. • - A reaction that releases heat. • - The speed at which a chemical reaction occurs. • - A substance that forms in a chemical reaction. • - The amount of product obtained in a chemical reaction. • - The loss of electrons during a reaction by a molecule, atom, or ion. • ...

Stoichiometry Crossword Puzzle 2025-05-11

Stoichiometry Crossword Puzzle crossword puzzle
Across
  1. An equation where the amount of atoms in a reaction is the same in both the reactants and the products
  2. The relationship between the space that something takes up and its mass
  3. The amount of a substance you should be able to get out of a chemical reaction
  4. The amount of a substance that you actually get out of a chemical reaction
  5. A way of counting similar to a gross
  6. A unit of concentration for solutions that is frequently used in chemistry, andis defined as the number of molesin a solute divided by the volume(In Liters)
  7. The amount of particles in one mole of anything
  8. Taking the relationships between reactants and products to find the desired outcome of a problem
  9. Mass in grams of one mole of a substance
  10. A reactant that is fully used up in a chemical reaction
  11. The abbreviation of "standard temperature and pressure"
Down
  1. An agent in a chemical reaction that donates electrons and causes the other agent in the reaction to be reduced
  2. A way of converting units of measurement
  3. Turning an observation into a numerical value
  4. The amount of moles that go into a reaction versus how many moles come out of the reaction
  5. A reactant that is not fully used in a chemical reaction
  6. A way to determine the concentration of a compound in a solution using the mass of the compound and the mass of the solution
  7. The efficiency of a chemical reaction, or what percent of a substance you got versus what you were supposed to get
  8. A number that is placed in front of a compound in a chemical reaction to represent the amount of that compound that is in the reaction
  9. The chemical that you are testing using chemical analysis

20 Clues: A way of counting similar to a gross • A way of converting units of measurement • Mass in grams of one mole of a substance • Turning an observation into a numerical value • The amount of particles in one mole of anything • A reactant that is fully used up in a chemical reaction • The abbreviation of "standard temperature and pressure" • ...

science 2024-05-08

science crossword puzzle
Across
  1. A substance Able to increase the rate of chemical reaction
  2. Site The enzyme where the chemical reaction occures
  3. The thing that changes in reactions
  4. A new material formed in a reaction
  5. acid Molecules used by living things
  6. Molecules that contain sugar
  7. A molecule that contains Nitrogen
  8. Fatty compounds that do lots of things
  9. A sugar replacing ribose
  10. A chemical element
  11. Chemical found in living organisms
Down
  1. acid Chains of natural Acids
  2. acid They play essential roles in all cells
  3. A molecule that reacts with Enzymes
  4. A protein that helps speed up the reaction
  5. A chemical reaction of a compound with water
  6. large organic compounds
  7. atoms that bond together to form structures
  8. Energy Amount of energy needed to start a reaction
  9. A substance consisting of large monomers

20 Clues: A chemical element • large organic compounds • A sugar replacing ribose • Molecules that contain sugar • A molecule that contains Nitrogen • acid Chains of natural Acids • Chemical found in living organisms • A molecule that reacts with Enzymes • The thing that changes in reactions • A new material formed in a reaction • Fatty compounds that do lots of things • ...

Reactions 2021-10-21

Reactions crossword puzzle
Across
  1. Ratio ​the ratio between the amounts in moles of any two compounds involved in a chemical reaction
  2. (combination) reaction, a type of chemical reaction in which two or more simple substances combine to form a more complex product.
  3. produce or provide (a natural, agricultural, or industrial product).
  4. of Conservation of mass, that in a chemical reaction mass is neither created nor destroyed
  5. a number placed in front of a chemical symbol or formula.
  6. molecules, energy involved in breaking the required chemical bonds is greater than the energy released when new bonds are formed.
  7. reaction, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.
  8. of matter: one of the ways in which matter can interact with itself to form a homogeneous phase
  9. Reaction to make the number of atoms the same on both the reactants and products side.
  10. Products it's often necessary for chemists to predict the chemical reactions that will take place when two chemicals are combined
  11. solid, is a substance (solid) that will not dissolve in a solvent even after mixing
Down
  1. An article or substance that is manufactured or refined for sale.
  2. reaction ,processes in which chemical species break up into simpler parts
  3. replacement reaction, occur when parts of two ionic compounds are exchanged, making two new compounds.
  4. a substance that takes part in and undergoes change during a reaction.
  5. solid, is one that dissolves in a liquid, usually water.
  6. molecules, energy involved in breaking the required chemical bonds is greater than the energy released when new bonds are formed.
  7. molecules, contain two atoms that are chemically bonded.
  8. cause (a substance) to be deposited in solid form from a solution.
  9. series an empirical, calculated, and structurally analytical progression of a series of metals, arranged by their "reactivity" from highest to lowest.
  10. Reaction A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  11. Replacement reaction, is a chemical reaction in which one element replaces another in a compound.

22 Clues: molecules, contain two atoms that are chemically bonded. • solid, is one that dissolves in a liquid, usually water. • a number placed in front of a chemical symbol or formula. • An article or substance that is manufactured or refined for sale. • cause (a substance) to be deposited in solid form from a solution. • ...

exoChemical Reactions Crossword 2025-11-11

exoChemical Reactions Crossword crossword puzzle
Across
  1. the starting substance in a chemical change
  2. The type of displacement reaction where two compounds exchange ions.
  3. Another term for a combination reaction, where simpler substances form a complex one.
  4. The type of replacement reaction where one element replaces another in a compound.
  5. the substance formed as a result of a chemical change
  6. A factor often changed to alter the rate of a reaction.
  7. the release of heat
  8. Describes a solution where the solvent is water (chemical state symbol).
  9. The fundamental process of chemical change.
  10. A compound formed by the transfer of electrons between atoms, resulting in charged particles.
  11. The rapid reaction of a substance with oxygen, producing heat and light.
Down
  1. A substance that slows down a chemical reaction.
  2. A substance that speeds up a reaction without being consumed itself.
  3. A chemical equation where the number of atoms for each element is equal on both sides.
  4. Another word for the displacement of one element by another.
  5. Describes a reaction that absorbs heat energy from the surroundings.
  6. A reaction where a single compound breaks down into two or more simpler substances.
  7. The process of atoms rearranging to form new substances
  8. The principle stating that mass is conserved in a closed system during a reaction.
  9. The representation of a compound using chemical symbols (H₂O)

20 Clues: the release of heat • the starting substance in a chemical change • The fundamental process of chemical change. • A substance that slows down a chemical reaction. • the substance formed as a result of a chemical change • The process of atoms rearranging to form new substances • A factor often changed to alter the rate of a reaction. • ...

Unit 6 and 7 Vocabulary 2013-12-12

Unit 6 and 7 Vocabulary crossword puzzle
Across
  1. states that mass is neither created nor destroyed during a chemical reaction but is conserved
  2. a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
  3. a chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds
  4. a statement using chemical formulas to describe the identities and and relative amounts of the reactants and products involved in the chemical reaction
  5. a chemical reaction that involves the exchange of ions between two compounds and produces either a precipitate, a gas, or water
  6. the study of quantitative relationships between the amounts of reactants used and products formed by a chemical reaction; is based on the law of conservation of mass
  7. in a balanced equation, the ratio between the numbers of moles of any two substances
Down
  1. a chemical reaction in which two or more substances react to yield a single product
  2. a chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound
  3. a formula that shows the smallest whole-number mole ratio of the elements of a compound, and might or might not be the same as the actual molecular formula
  4. the minimum amount of energy required by reacting particles in order to form the activated complex and lead to a reaction
  5. a formula that specifies the actual number of atoms of each element in one molecule of a substance
  6. a compound that has a specific number of water molecules bound to its atoms
  7. a percentage determined by the ratio of the mass of each element to the total mass of the compound
  8. a reactant that is totally consumed during a chemical reaction, limits the extent of the reaction, and determines the amount of product
  9. a reactant that remains after a chemical reaction stops
  10. the ratio of actual yield to theoretical yield expressed as a percent
  11. states that atoms, ions, and molecules must collide in order to react
  12. the mass in grams of one mole of any pure substance
  13. a solid produced during a chemical reaction in a solution

20 Clues: the mass in grams of one mole of any pure substance • a reactant that remains after a chemical reaction stops • a solid produced during a chemical reaction in a solution • the ratio of actual yield to theoretical yield expressed as a percent • states that atoms, ions, and molecules must collide in order to react • ...

science 2024-05-08

science crossword puzzle
Across
  1. A substance Able to increase the rate of chemical reaction
  2. Site The enzyme where the chemical reaction occures
  3. The thing that changes in reactions
  4. A new material formed in a reaction
  5. acid Molecules used by living things
  6. Molecules that contain sugar
  7. A molecule that contains Nitrogen
  8. Fatty compounds that do lots of things
  9. A sugar replacing ribose
  10. A chemical element
  11. Chemical found in living organisms
Down
  1. acid Chains of natural Acids
  2. acid They play essential roles in all cells
  3. A molecule that reacts with Enzymes
  4. A protein that helps speed up the reaction
  5. A chemical reaction of a compound with water
  6. large organic compounds
  7. atoms that bond together to form structures
  8. Energy Amount of energy needed to start a reaction
  9. A substance consisting of large monomers

20 Clues: A chemical element • large organic compounds • A sugar replacing ribose • Molecules that contain sugar • A molecule that contains Nitrogen • acid Chains of natural Acids • Chemical found in living organisms • A molecule that reacts with Enzymes • The thing that changes in reactions • A new material formed in a reaction • Fatty compounds that do lots of things • ...

Chemical Reactions and Enzymes 2022-10-19

Chemical Reactions and Enzymes crossword puzzle
Across
  1. a starting material of a chemical reaction.
  2. the enzyme that helps break down the sugar lactose
  3. an end material of a chemical reaction.
  4. type of reaction that releases energy as heat
  5. example of chemical reaction where food is broken down into smaller compounds
  6. where energy is stored in compounds
  7. the enzyme that helps break down lipids
  8. the energy needed to activate a chemical reaction
  9. A substance that speeds up a chemical reaction by lowering the activation energy
  10. energy cannot be created nor destroyed
Down
  1. the process where one or more reactants are converted into one or more different products.
  2. the substance on which an enzyme acts.
  3. example of chemical reaction where wood is burned
  4. type of reaction that has more energy stored than released
  5. a special kind of protein that acts as a biological catalyst
  6. what thermal energy is also known as
  7. the area where an enzyme and substrate meet.
  8. example of chemical reaction where plants convert CO2 into the sugar glucose

18 Clues: where energy is stored in compounds • what thermal energy is also known as • the substance on which an enzyme acts. • energy cannot be created nor destroyed • an end material of a chemical reaction. • the enzyme that helps break down lipids • a starting material of a chemical reaction. • the area where an enzyme and substrate meet. • ...

Chemical crossword 2025-06-12

Chemical crossword crossword puzzle
Across
  1. Neutrally charged subatomic particles found in the nucleus.
  2. Substance that decreases activation energy and increases reaction rate in a chemical reaction.
  3. Compound that donates a proton (H+) when dissolved in a solution.
  4. Substance formed by a chemical reaction.
  5. Smallest basic unit of matter.
  6. Chemical bond formed when two atoms share one or more pairs of electrons.
  7. Compound that accepts a proton (H+) when dissolved in a solution.
  8. Chemical reaction that requires a net input of energy.
  9. Negatively charged subatomic particles found in shells or clouds around the nucleus.
Down
  1. Condition in which reactants and products of a chemical reaction are formed at the same rate.
  2. Atom that has gained or lost one or more electrons.
  3. Substance that is changed by a chemical reaction.
  4. Protein that catalyzes chemical reactions for organisms.
  5. Reactant in a chemical reaction upon which an enzyme acts.
  6. Form of an element that has the same number of protons but a different number of neutrons as another element.
  7. Positively charged subatomic particles found in the nucleus.
  8. Substance made of atoms of different elements that are bonded together in a particular ratio.
  9. Chemical reaction that yields a net release of energy in the form of heat.
  10. Chemical bond formed through the electrical force between oppositely charged ions.
  11. Two or more atoms held together by covalent bonds.

20 Clues: Smallest basic unit of matter. • Substance formed by a chemical reaction. • Substance that is changed by a chemical reaction. • Two or more atoms held together by covalent bonds. • Atom that has gained or lost one or more electrons. • Chemical reaction that requires a net input of energy. • Protein that catalyzes chemical reactions for organisms. • ...

Stoichiometry of Chemical Equations 2025-11-23

Stoichiometry of Chemical Equations crossword puzzle
Across
  1. substance undergoing a chemical or physical change; shown on the left side of the arrow in a chemical equation
  2. reaction redox reaction involving the oxidation of an elemental substance by an ionic species
  3. relationships between the amounts of reactants and products of a chemical reaction
  4. number placed in front of symbols or formulas in a chemical equation to indicate their relative amount
  5. relatively high solubility; dissolving to a relatively large extent
  6. reactant present in an amount lower than required by the reaction stoichiometry, thus limiting the amount of product generated
  7. process in which an element’s oxidation number is decreased by gain of electrons
  8. amount of product formed in a reaction
  9. substance that produces OH− when dissolved in water
  10. reaction between an acid and a base to produce salt and water
  11. chemical equation with equal numbers of atoms for each element in the reactant and product
Down
  1. amount of product that may be produced from a given amount of reactant(s) according to the reaction stoichiometry
  2. a chemical reaction where two ionic compounds exchange their positive ions (cations) to form two new compounds
  3. process in which an element’s oxidation number is increased by loss of electrons
  4. substance that produces H3O+ when dissolved in water
  5. insoluble product that forms from reaction of soluble reactants
  6. symbolic representation of a chemical reaction
  7. vigorous redox reaction producing significant amounts of energy in the form of heat and, sometimes, light
  8. measure of the efficiency of a reaction, expressed as a percentage of the theoretical yield
  9. substance formed by a chemical or physical change; shown on the right side of the arrow in a chemical equation
  10. chemical equation in which all reactants and products are represented as neutral substances
  11. reactant present in an amount greater than required by the reaction stoichiometry

22 Clues: amount of product formed in a reaction • symbolic representation of a chemical reaction • substance that produces OH− when dissolved in water • substance that produces H3O+ when dissolved in water • reaction between an acid and a base to produce salt and water • insoluble product that forms from reaction of soluble reactants • ...

Chemical Reaction Vocab 2025-02-10

Chemical Reaction Vocab crossword puzzle
Across
  1. A reaction that releases heat, making the surroundings feel warmer.
  2. A sign of a chemical reaction where heat is absorbed or released.
  3. A prediction about what will happen in an experiment.
  4. The amount of matter in an object.
  5. A change in color that indicates a chemical reaction has taken place.
  6. Information that supports whether a chemical reaction has occurred.
  7. Anything that has mass and takes up space.
  8. A process where substances change into new substances with different properties.
Down
  1. A mixture where one substance dissolves into another, but no new substance forms.
  2. A combination of two or more substances that do not chemically react.
  3. A reaction that absorbs heat, making the surroundings feel cooler.
  4. The starting substances in a chemical reaction.
  5. The new substances formed in a chemical reaction.
  6. The principle that matter is not created or destroyed in a chemical reaction.
  7. A change that alters a substance’s form but does not create a new substance.
  8. The formation of gas (bubbles or fizzing) as a sign of a chemical reaction.
  9. A change where one or more substances turn into entirely new substances.
  10. A solid that forms from a chemical reaction between liquids.

18 Clues: The amount of matter in an object. • Anything that has mass and takes up space. • The starting substances in a chemical reaction. • The new substances formed in a chemical reaction. • A prediction about what will happen in an experiment. • A solid that forms from a chemical reaction between liquids. • A sign of a chemical reaction where heat is absorbed or released. • ...

Types of reactions vocab 2016-04-06

Types of reactions vocab crossword puzzle
Across
  1. Reaction in which product is always CO2 + H2O
  2. Oxidation Readuction
  3. A rearrangement of atoms that produces changes in physical and chemical properties of substances involved; chemical change in which new materials are formed
  4. Dissolved in water
  5. equation that has the general form of AX + BY -> AY +BX
  6. Involves transfer of electrons from one substance to another; also called redox
  7. State where two opposing processes or reactions are occurring at the same time and same rate
  8. Reaction in which a precipitate is a product
  9. Reactants and products contain same number of atoms
Down
  1. Symbolizes a chemical reaction (qualitatively & quantitatively)
  2. Chemical equation that has the general form A+BX -> AX + B
  3. Large number preceding chemical formulas in a chemical equation
  4. Solid that forms when two solutions are mixed, usually as a result of a chemical reaction
  5. Reaction where one reactant forms two or more products
  6. Chemical equation obtained by omitting unchanged ions (spectator ions) from an ionic equation
  7. Reaction where two elements or an element and compound or two compounds combine to form one product.
  8. Reaction of an acid and a base to form a salt and a water
  9. Substances are present at the beginning of a chemical reaction and subsequently undergo a change in identity
  10. What is formed as a result of a chemical reaction

19 Clues: Dissolved in water • Oxidation Readuction • Reaction in which a precipitate is a product • Reaction in which product is always CO2 + H2O • What is formed as a result of a chemical reaction • Reactants and products contain same number of atoms • Reaction where one reactant forms two or more products • equation that has the general form of AX + BY -> AY +BX • ...

Chapter 2 terms 2022-03-21

Chapter 2 terms crossword puzzle
Across
  1. a solid that forms from a solution during a chemical reaction
  2. a rapid reaction between oxygen and fuel that results in fire
  3. the principle stating that matter is not created or destroyed during a chemical reaction
  4. a system in which matter can enter from or escape to the surroundings
  5. a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
  6. the study of the properties of matter and how matter changes
  7. a reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  8. a characteristic of a substance that can be observed without changing the substance into another substance
  9. a biological catalyst that lowers the activation energy of reactions in cells
  10. the process in which substances undergo chemical changes that result in the formation of new substances
  11. the amount of one material in a certain volume of another material
  12. a reaction that releases energy in the form of heat
  13. anything that has mass and occupies space
  14. a material that releases energy when it burns
Down
  1. a material that decreases the rate of a reaction
  2. a system in which no matter is allowed to enter or leave
  3. a chemical reaction that breaks down compounds into simpler products
  4. a short and easy way to show a chemical reaction using symbols
  5. the minimum amount of energy needed to get a
  6. a reaction that absorbs energy in the form of heat
  7. a substance formed as a result of a chemical reaction
  8. a change that alters the form or appearance of a material but does not make the material into another substance
  9. a material that increases the rate of a reaction by lowering the activation energy
  10. a characteristic of a substance describes its ability to change into different substances
  11. a chemical reaction in which two or more simple substances combine to form a new more complex substance
  12. a substance that enters into a chemical reaction
  13. reaction started

27 Clues: reaction started • anything that has mass and occupies space • the minimum amount of energy needed to get a • a material that releases energy when it burns • a material that decreases the rate of a reaction • a substance that enters into a chemical reaction • a reaction that absorbs energy in the form of heat • a reaction that releases energy in the form of heat • ...

Science 2.0 2022-03-22

Science 2.0 crossword puzzle
Across
  1. A chemical reaction that breaks down compounds into simpler products.
  2. The amount of one material in a certain amount of volume of another material.
  3. A biological catalyst that lowers the activation energy of reactions in cells.
  4. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places.
  5. A characteristic of a substance that describes its ability to change into different substances.
  6. A solid that forms from a solution during a chemical reaction.
  7. A material that increases the rate of a reaction by lowering the activation energy.
  8. The process in which substances undergo chemical changes that result in the formation of new substances.
  9. Anything that has mass and occupies space.
  10. A reaction that releases energy in the form of heat.
  11. A substance that enters into a chemical reaction.
  12. A material that decreases the rate of a reaction.
  13. A substance formed as a result of a chemical reaction.
  14. A rapid reaction between oxygen and fuel that results in fire.
  15. The minimum amount of energy needed to get a chemical reaction started.
  16. A system in which no matter is allowed to enter or leave.
  17. The principle stating that matter is not created or destroyed during a chemical reaction.
Down
  1. A system in which matter can enter or escape to the surroundings.
  2. A reaction that absorbs energy in the form of heat.
  3. A material that releases energy when it burns.
  4. A change that alters the form or appearance of a material but does not make the material into another substance.
  5. A characteristic of a substance that can be observed without changing the substance into another substance.
  6. A chemical reaction in which two or more simple substances combine to form a new, more complex substance.
  7. A short, easy way to show a chemical reaction, using symbols.
  8. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  9. the study of the properties of matter and how matter changes.

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

Chapter 5 2020-02-26

Chapter 5 crossword puzzle
Across
  1. , The minimum amount of energy needed to start a chemical reaction.
  2. , Amount of substance in a given volume.
  3. , The energy that releases heat.
  4. , The energy that absorbs heat.
  5. , An alter in appearance of a substance
  6. , When two or more elements or compounds combine to make a more complex substance.
  7. , When compounds breaks down into simpler products.
  8. equation , A way to show a chemical reaction using symbols
  9. , Matter doesn't enter or leave.
Down
  1. , A solid that forms from liquids during a chemical reaction.
  2. , A material that is used to decrease the rate of a chemical reaction.
  3. , During a chemical reaction, matter in neither created nor destroyed.
  4. , substances that undergo the chemical change
  5. , Tiny cells in our bodies that are reactants helping occur at body temperature.
  6. , Increases the reaction rate by lowering activation energy.
  7. , a number placed in front of a chemical formula in an equation.
  8. , matter can enter or escape to the surroundings
  9. , A change in matter that produces 1 or more new substances
  10. , When one element replaces another element in a compound.
  11. , The new substance formed after a chemical change.

20 Clues: , The energy that releases heat. • , The energy that absorbs heat. • , Matter doesn't enter or leave. • , An alter in appearance of a substance • , Amount of substance in a given volume. • , substances that undergo the chemical change • , matter can enter or escape to the surroundings • , When compounds breaks down into simpler products. • ...

Jasmine Matias Crossword Puzzle 2017-02-27

Jasmine Matias Crossword Puzzle crossword puzzle
Across
  1. made smaller
  2. the process of burning something
  3. a substance that is formed as the result of a chemical reaction
  4. symbolic representation of a chemical reaction
  5. decaying by passing an electric current through a liquid
  6. the combination of chemical compounds by reaction from simpler form
  7. to happen suddenly
  8. a type of chemical reaction where two compounds react
  9. a number or symbol multiplied with a variable
Down
  1. a substance that increases the rate of a chemical reaction
  2. Combination-
  3. watery
  4. decay
  5. two atoms
  6. where an element reacts with a compound
  7. a molecular ion
  8. combined or be combined with oxygen
  9. undergoes change during a reaction
  10. or provide

19 Clues: decay • watery • two atoms • or provide • Combination- • made smaller • a molecular ion • to happen suddenly • the process of burning something • undergoes change during a reaction • combined or be combined with oxygen • where an element reacts with a compound • a number or symbol multiplied with a variable • symbolic representation of a chemical reaction • ...

Balancing and Classifying Reactions 2024-04-25

Balancing and Classifying Reactions crossword puzzle
Across
  1. the higher the ___________ the faster the reaction rate of gases
  2. the process by atoms are rearranged to form difference substances
  3. 2 words describing a reaction where two things are being replaced
  4. chemical reactions that release energy
  5. the number to the bottom right of element or compound that you can't change
  6. a change where it only effects a substances physical properties
  7. chemical reactions that absorb energy
  8. when one reactant breaks down into multiple products
  9. substances on the left side of the reaction
  10. substance that speeds up the reaction rate
Down
  1. right side of the reaction what is produced
  2. chemical reactions that release energy in the form of heat
  3. numbers in front of the elements or molecule to help balance the equation
  4. when two reactants come together to form one product
  5. reactions that absorb energy in the form of heat
  6. a change in a substance where it affects the chemical properties, thus starting a chemical reaction
  7. the definition of the arrow in a reaction
  8. a reaction where your products are CO2 and H20
  9. 2 words describing a reaction where one thing is replaced

19 Clues: chemical reactions that absorb energy • chemical reactions that release energy • the definition of the arrow in a reaction • substance that speeds up the reaction rate • right side of the reaction what is produced • substances on the left side of the reaction • a reaction where your products are CO2 and H20 • reactions that absorb energy in the form of heat • ...

Unit 4 review 2024-12-02

Unit 4 review crossword puzzle
Across
  1. A solid that forms and separates from a liquid solution as a sign of a chemical reaction.
  2. A characteristic smell produced as a result of a chemical reaction occurring.
  3. A chemical reaction that absorbs heat from its surroundings.
  4. Electrons in the outermost shell of an atom that are involved in forming chemical bonds.
  5. A chemical reaction that releases heat to its surroundings.
  6. A simplified version of a structural formula that shows the atoms and their bonds but omits some details, often using shorthand to represent certain parts of the molecule.
  7. A chemical bond in which two atoms share three pairs of electrons.
  8. The speed at which a chemical reaction occurs typically increases when the temperature is raised.
  9. The principle stating that mass is neither created nor destroyed in a chemical reaction, which is why chemical equations must be balanced.
  10. A substance that speeds up a chemical reaction without being consumed in the process.
Down
  1. A symbolic representation of a chemical reaction, showing reactants, products, and their proportions.
  2. A chemical bond in which two atoms share one pair of electrons.
  3. The principle that energy cannot be created or destroyed, only transformed, in a chemical reaction.
  4. A representation of a compound showing the elements and the number of atoms of each element in the compound.
  5. A chemical compound primarily made of carbon atoms bonded with hydrogen, oxygen, and other elements, typically forming the basis of life.
  6. The amount of a substance in a given volume, which can influence the rate of a chemical reaction.
  7. A chemical bond in which two atoms share two pairs of electrons.
  8. A representation of a molecule that shows all atoms and the bonds between them, illustrating the exact arrangement of atoms.
  9. For example, a larger ________ of a solid, such as powdered sugar, reacts faster than a large lump of the same material because more of it is exposed to the other reactant.

19 Clues: A chemical reaction that releases heat to its surroundings. • A chemical reaction that absorbs heat from its surroundings. • A chemical bond in which two atoms share one pair of electrons. • A chemical bond in which two atoms share two pairs of electrons. • A chemical bond in which two atoms share three pairs of electrons. • ...

Chapter 2 Terms 2022-03-21

Chapter 2 Terms crossword puzzle
Across
  1. the minimum amount of energy needed to get a chemical reaction started
  2. the process in which substances undergo chemical changes that result in the formation of new substances
  3. a chemical reaction that breaks down compounds into simpler products
  4. a substance formed as a result of a chemical reaction
  5. a system in which no matter is allowed to enter or leave
  6. a material that decreases the rate of a reaction
  7. a short and easy way to show a chemical reaction using symbols
  8. a rapid reaction between oxygen and fuel that results in fire
  9. a characteristic of a substance that can be observed without changing the substance into another substance
  10. a solid that forms from a solution during a chemical reaction
  11. the amount of one material in a certain volume of another material
  12. a material that releases energy when it burns
  13. a change that alters the form or appearance of a material but does not make the material into another substance
Down
  1. a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
  2. a reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  3. a reaction that releases energy in the form of heat
  4. anything that has mass and occupies space
  5. a system in which matter can enter from or escape to the surroundings
  6. a characteristic of a substance describes its ability to change into different substances
  7. a substance that enters into a chemical reaction
  8. the principle stating that matter is not created or destroyed during a chemical reaction
  9. a chemical reaction in which two or more simple substances combine to form a new more complex substance
  10. the study of the properties of matter and how matter changes
  11. a reaction that absorbs energy in the form of heat
  12. a material that increases the rate of a reaction by lowering the activation energy
  13. a biological catalyst that lowers the activation energy of reactions in cells

26 Clues: anything that has mass and occupies space • a material that releases energy when it burns • a substance that enters into a chemical reaction • a material that decreases the rate of a reaction • a reaction that absorbs energy in the form of heat • a reaction that releases energy in the form of heat • a substance formed as a result of a chemical reaction • ...

Chapter 2 Key Terms 2022-03-18

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

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

Types Of Reactions-Mohammed Ibrahim Fowad 2024-05-07

Types Of Reactions-Mohammed Ibrahim Fowad crossword puzzle
Across
  1. A chemical reaction in which a precipitate is produces.
  2. A chemical reaction in which a single reactant breaks down to give simpler products.
  3. The gas collected at anode during electrolysis of water.
  4. Reactions in which heat is released along with the formation of products.
  5. The new substances formed during the reaction.
  6. A chemical reaction in which energy is absorbed.
Down
  1. The gas collected at cathode during electrolysis of water.
  2. A chemical reaction in which a more reactive element displaces a less reactive element from its compound.
  3. A chemical reaction in which there is an exchange of ions between the reactants.
  4. A chemical reaction in which a metal is converted into a hydroxide ,oxide or sulphide.
  5. A chemical reaction in which aerial oxidation of unsaturated fat present in food gives it an unpleasant flavor and odor.
  6. A chemical reaction in which a single product is formed from two or more reactants.
  7. The substances that undergo chemical change in a reaction.
  8. A chemical reaction in which a substance gains oxygen.
  9. A chemical reaction in which a substance loses oxygen.
  10. Silver Chloride turns grey by photolytic decomposition using sunlight to form this metal.

16 Clues: The new substances formed during the reaction. • A chemical reaction in which energy is absorbed. • A chemical reaction in which a substance gains oxygen. • A chemical reaction in which a substance loses oxygen. • A chemical reaction in which a precipitate is produces. • The gas collected at anode during electrolysis of water. • ...

Chapter 6 2015-03-29

Chapter 6 crossword puzzle
Across
  1. a displacement reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
  2. a substance or molecule that participates in a chemical reaction.
  3. a chemical reaction in which heat is released to the surroundings
  4. a part, substance, or element that lies beneath and supports another part, substance, or element; the reactant in reactions catalyzed by enzymes
  5. a representation of a chemical reaction that uses symbols to show the relationships between reactants and products
  6. a displacement reaction in which one element or radical takes the place of another element or radical in a compound
  7. the process in which an electric current is used to produce a chemical reaction, such as decomposition of water
  8. an organic group that has one or more electrons available for bonding
  9. a substance that forms in a chemical reaction
  10. the relative number of moles of the substance required to produce a given amount of product in the chemical reaction
  11. Bond that transfers electrons
Down
  1. positive ion
  2. a reaction in which a single compound breaks down to form two or more simpler substances
  3. a reaction in which two or more substances combine to form a new compound
  4. any chemical change in which one species is oxidized and another species is reduced also called redox reactions
  5. Bond between metals
  6. a substance that changes the rate of the chemical reaction without being consumed or changed significantly
  7. the energy released when a chemical compound reacts to produce new compounds
  8. the oxidation reaction of an organic compound, in which he is released
  9. a chemical reaction that requires heat
  10. a state of balance in which the rate of the forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged
  11. Bond that shares electrons
  12. a type of protein that speeds up metabolic reactions in plants and animals without being permanently changed or destroyed
  13. negative ion

24 Clues: positive ion • negative ion • Bond between metals • Bond that shares electrons • Bond that transfers electrons • a chemical reaction that requires heat • a substance that forms in a chemical reaction • a substance or molecule that participates in a chemical reaction. • a chemical reaction in which heat is released to the surroundings • ...

Emmanuel Herrera 2017-02-27

Emmanuel Herrera crossword puzzle
Across
  1. substance formed as a result
  2. solution in which the solvent is water
  3. the amount of product obtained in a chemical reaction
  4. something to happen unexpectedly
  5. chemical reaction chemical that occurs between a fuel and an oxidizing agent
  6. where an element reacts with a compound and takes the place of another element in the compound.
  7. a symbolic representation of a chemical reaction
  8. made smaller in size
Down
  1. a chemical compound into elements or simpler compounds
  2. a type of chemical reaction where two compounds react, and the positive ions and the negative ions of the two reactants switch places, forming two new compounds or products
  3. a change token place during reaction
  4. a charged chemical species composed of two or more atoms
  5. the process or result of oxidizing or being oxidized.
  6. A numerical measure of a physical or chemical property that is constant for a system under specified condition
  7. consisting of 2 atoms
  8. combination or composistion
  9. a compound that contains two different elements
  10. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
  11. a substance that speeds up a chemical reaction, but is not consumed by the reaction

19 Clues: made smaller in size • consisting of 2 atoms • combination or composistion • substance formed as a result • something to happen unexpectedly • a change token place during reaction • solution in which the solvent is water • a compound that contains two different elements • a symbolic representation of a chemical reaction • the process or result of oxidizing or being oxidized. • ...

Molecular Mysteries 2024-05-05

Molecular Mysteries crossword puzzle
Across
  1. It often appears cloudy or forms at the bottom of a solution.
  2. What you do to ensure a chemical equation follows the law of conservation of mass.
  3. A fundamental process in chemistry involving the transformation of substances.
  4. It distinguishes between different atoms in a compound.
  5. It often involves the addition of oxygen or the loss of hydrogen.
  6. What happens when an acid and a base react to cancel each other's effects.
  7. A chemical reaction that releases heat to its surroundings.
Down
  1. A chemical reaction involving the gain of electrons by a substance.
  2. It shows the reactants and products of a chemical reaction.
  3. A chemical reaction in which a compound breaks down into two or more simpler substances.
  4. It's what happens when something burns.
  5. It lowers the activation energy of a reaction.
  6. Used to determine whether a solution is acidic, basic, or neutral.
  7. The speed at which a reaction occurs, often expressed in moles per unit time.
  8. A chemical reaction that absorbs heat from its surroundings.
  9. These are what you start with in a chemical reaction.
  10. Often involves the change in oxidation states of elements.
  11. What you end up with after a chemical reaction.

18 Clues: It's what happens when something burns. • It lowers the activation energy of a reaction. • What you end up with after a chemical reaction. • These are what you start with in a chemical reaction. • It distinguishes between different atoms in a compound. • Often involves the change in oxidation states of elements. • ...

chapter 14 and 15 vocabulary 2013-12-12

chapter 14 and 15 vocabulary crossword puzzle
Across
  1. : a compound that can reversibly change color depending on conditions such as pH
  2. : the value that is used to express the acidity or basicity (alkalinity) of a system
  3. a solid that is produced as a result of a chemical reaction in solution
  4. : an ionic compound that forms when a metal atom replaces the hydrogen of an acid.
  5. energy : the minimum amount of energy required to start a chemical reaction
  6. equation : a representation of a chemical reaction that uses symbols to show the reactants and the products
  7. : any compound that increases the number of hydroxide ions when dissolved in water
  8. : a substance that shows down or stops a chemical reaction
  9. reaction : a chemical reaction in which heat is released to the surroundings
Down
  1. : any compound that increases the number or hydronium ions when dissolved in water
  2. reaction : a chemical reaction that requires heat
  3. : the substance that forms in a chemical reaction
  4. reaction : the reaction of an acid and a base to form a neutral solution of water and salt
  5. : a substance or molecule that participates in chemical reaction
  6. : a substance that slows down or stops a chemical reaction.
  7. of conservation of energy : the law that states that energy cannot be created

16 Clues: reaction : a chemical reaction that requires heat • : the substance that forms in a chemical reaction • : a substance that shows down or stops a chemical reaction • : a substance that slows down or stops a chemical reaction. • : a substance or molecule that participates in chemical reaction • ...

Chemical Reaction Quest 2025-10-08

Chemical Reaction Quest crossword puzzle
Across
  1. Evidence of gas produced during a chemical reaction
  2. A common kitchen ingredient that reacts with citric acid.
  3. The "C" in CO2
  4. System where the mass does not change
  5. The new substances formed in a chemical reaction
  6. dioxide Gas produced during the bath bomb reaction
  7. Another word for smell
  8. Material made up of more than one substance
  9. another property is the state of matter at room __________
Down
  1. A component of marble
  2. A state of matter
  3. The building blocks of molecules
  4. Solid left off during the bath bomb reaction
  5. A physical change where no new substance is formed
  6. Atoms are neither created or _____ in a chemical reaction
  7. mass divided by volume
  8. Helps to identify a substance, like density and flammability
  9. The type of change where atoms rearrange to form new substances
  10. Starting materials of the reaction

19 Clues: The "C" in CO2 • A state of matter • A component of marble • mass divided by volume • Another word for smell • The building blocks of molecules • Starting materials of the reaction • System where the mass does not change • Material made up of more than one substance • Solid left off during the bath bomb reaction • The new substances formed in a chemical reaction • ...

💥 Chemical Reactions 💥 Crosswd 2022-12-13

💥 Chemical Reactions 💥 Crosswd crossword puzzle
Across
  1. -chemical reaction in which heat is released to the surroundings
  2. -__________ reaction is a chemical change in which a single compound is broken down into two or more simpler products
  3. -_______ ________ reaction is a reaction in which one element takes the place of another element in a compound
  4. -chemical reaction that requires heat
  5. -_______ ________ reaction is a reaction in which the ions of two compounds exchange places in an aqueous solution to form two new compounds
  6. -__________ reaction a chemical reaction in which two or more substances react to yield a single product
  7. -__________ energy is needed to get a reaction started
  8. -chemical ________ shows the elements in the compound and the ratio of atoms
Down
  1. -the process by which one or more substances change to produce one or more different substances
  2. -a law states that _____ cannot be created or destroyed in ordinary chemical and physical changes
  3. -substance or molecule that is formed during a chemical reaction; on the right side of a chemical equation
  4. -substance that speeds up the rate of a chemical reaction
  5. -a solid that forms and settles out of a liquid mixture
  6. -substance or molecule that participates in a chemical reaction; on the left side of a chemical equation
  7. -a chemical reaction where a fuel burns in the presence of oxygen and produces carbon dioxide and water vapor
  8. -substance that interferes with the action of a catalyst

16 Clues: -chemical reaction that requires heat • -__________ energy is needed to get a reaction started • -a solid that forms and settles out of a liquid mixture • -substance that interferes with the action of a catalyst • -substance that speeds up the rate of a chemical reaction • -chemical reaction in which heat is released to the surroundings • ...

Unit 8: Reactions 2024-11-21

Unit 8: Reactions crossword puzzle
Across
  1. A redox reaction in which a compound breaks up to form two products
  2. A molecule with asymmetrical electron distribution resulting in partially charged ends.
  3. The gain of electron(s), causing the oxidation number of a species to become more negative.
  4. A solution reaction in which the positive ion of one compound combines with the negative ion of the other compound to form a precipitate, and the other ions remain dissolved in solution.
  5. Energy cannot be created or destroyed by physical or chemical change.
  6. An ion that does not participate in the chemical reaction.
  7. The substances that are reacted together, designated as the left side of the chemical reaction.
  8. Matter cannot be created or destroyed by physical or chemical change.
  9. A redox reaction in which two elements combine to form a compound.
  10. A number placed in front of a formula to balance a chemical reaction.
Down
  1. An insoluble solid that is formed either in a double-replacement reaction or as an excess solute added to a saturated solution.
  2. The whole-number ratio between components of a balanced, chemical reaction.
  3. The substances that are formed by a chemical reaction, designated as the right side of the chemical equation.
  4. The mathematics of mole relationships.
  5. Charge cannot be created or destroyed by physical or chemical change.
  6. A reaction in which one element is oxidized and another element is reduced.
  7. A chemical change where reactants are turned into products.
  8. The loss of electron(s), causing the oxidation number of a species to become more positive.
  9. A redox reaction in which an element replaces an ion in a compound.

19 Clues: The mathematics of mole relationships. • An ion that does not participate in the chemical reaction. • A chemical change where reactants are turned into products. • A redox reaction in which two elements combine to form a compound. • A redox reaction in which a compound breaks up to form two products • ...

Physical Science Unit 5 - Ch 13 & 14 Vocab 2024-10-03

Physical Science Unit 5 - Ch 13 & 14 Vocab crossword puzzle
Across
  1. Ions in two different compounds switch place: ___________ replacement
  2. a reaction by which one or more substances change to produce one or more different substances
  3. a group of atoms that are held together by chemical forces; a molecule is the smallest unit of matter that can exist by itself and retain all of a substance‘s chemical properties
  4. an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties
  5. the law of _________ of mass states the mass cannot be created or destroyed in ordinary chemical and physical changes
  6. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  7. the law of __________ of energy states that energy cannot be created or destroyed but can be changed from one form to another
  8. a bond formed by the attraction between positively charged metal ions and the electrons around them
  9. a charged particle that forms when an atom or group of atoms gains or loses one or more electrons
  10. a chemical reaction in which heat is released to the surroundings
Down
  1. a chemical reaction that requires heat
  2. a combination of chemical symbols and numbers to represent a substance: chemical _______
  3. a substance or molecule that participates in a chemical reaction
  4. A single compound breaks down into two (or more) simpler substances
  5. a solid that is produced as a result of a chemical reaction in solution
  6. Two (or more) substances combine to form a single compound
  7. bond between oppositely charged ions, which form when electrons are
  8. a substance that forms in a chemical reaction
  9. the minimum amount of energy required to start a chemical reaction
  10. One element takes the place of another element that is part of a compound: _____________ replacement
  11. an interaction that holds atoms or ions together
  12. a bond formed when atoms share one or more pairs of electrons

22 Clues: a chemical reaction that requires heat • a substance that forms in a chemical reaction • an interaction that holds atoms or ions together • Two (or more) substances combine to form a single compound • a bond formed when atoms share one or more pairs of electrons • a substance or molecule that participates in a chemical reaction • ...

Pages 184-201 2015-01-09

Pages 184-201 crossword puzzle
Across
  1. The study of matter.
  2. A change in matter that produces one or more substances.
  3. The top of page 186 has changes happening to a __.
  4. Substances you have after a reaction is complete.
  5. A reaction in which energy is absorbed.
  6. Substances you have at the beginning of a chemical reaction.
  7. The little numbers in a formula.
  8. A chemical __ is a short, easy way to show a chemical reaction.
  9. A chemical change occurs when __ break and new __ form.
Down
  1. A property that is a characteristic of a substance that can be observed without changing the substance into another substance.
  2. The leaves on page 188 are turning green because of a reaction making __.
  3. A reaction that releases energy.
  4. On page 197, a __ is decaying.
  5. The two liquids on page 188 are reacting making a __.
  6. A system that matter can enter or escape from.
  7. The big number that is placed in front of a chemical formula.
  8. The bubbles on page 189 are made out of __.
  9. The conservation of __ states matter is not created or destroyed in a chemical reaction.
  10. Anything that has mass and takes up space.
  11. The arrow in a chemical reaction means this.
  12. A system that matter cannot enter or leave from.

21 Clues: The study of matter. • On page 197, a __ is decaying. • A reaction that releases energy. • The little numbers in a formula. • A reaction in which energy is absorbed. • Anything that has mass and takes up space. • The bubbles on page 189 are made out of __. • The arrow in a chemical reaction means this. • A system that matter can enter or escape from. • ...

Chemistry 2020-04-21

Chemistry crossword puzzle
Across
  1. One or more substances dissolved in a solution
  2. Ion Ion that does not participate in a reaction
  3. Equation A statement using chemical formula prescribed the identities and relative amounts of reactants and products involved in a chemical reaction
  4. Reaction a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat or light
  5. Solution contains one or more substances called solutes dissolved in water
  6. A solid produced during a chemical reaction in a solution
  7. Reaction The process by which the atoms of one or more substances are rearranged to form different substances; occurrence can be indicated by changes in temp. color, odor, and physical state
  8. Replacement Reaction a chemical reaction that occurs when the atoms of one elements replaces the atoms of another element in a compound
  9. Replacement Reaction A chemical reaction that involves the exchange of ions between two compounds and produces either a precipitate, a gas or water
  10. The substance dissolves to form a solution; the most plentiful substance in the solution
Down
  1. Reaction a chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds
  2. Reaction A chemical reaction in which two or more substances react to yield a single product
  3. the starting substance in a chemical reaction
  4. A substance formed during a chemical reaction
  5. Ionic Equation An ionic equation that shows all the particles in a solution as they realistically exist
  6. In a chemical reaction the number written in front of a reactant or product; in a balanced equation describes the lowest whole number ratio of the amounts of all reactants and products
  7. Equation An ionic equation that includes only particles that participate in the reaction

17 Clues: A substance formed during a chemical reaction • One or more substances dissolved in a solution • the starting substance in a chemical reaction • Ion Ion that does not participate in a reaction • A solid produced during a chemical reaction in a solution • Solution contains one or more substances called solutes dissolved in water • ...

Chemical Reactions 2021-04-15

Chemical Reactions crossword puzzle
Across
  1. mass cannot be created or destroyed in ordinary chemical and physical changes
  2. the process by which one or more substances change to produce one or more different substances
  3. the oxidation reaction of an organic compound, in which heat is released
  4. rate the rate at which a chemical reaction takes place; measured by the rate of formation of the product or the rate of disappearance of the reactants
  5. a substance that forms in a chemical reaction
  6. a reaction in which two or more substances combine to form a new compound
Down
  1. a reaction in which one element or radical takes the place of another element or radical in a compound
  2. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  3. the energy released when a chemical compound reacts to produce new compounds
  4. a chemical reaction in which heat is released to the surroundings
  5. a substance or molecule that participates in a chemical reaction
  6. This happens when the reactant ion changes places to form a new product.
  7. a substance that changes the rate of a chemical reaction without being consumed or changed significantly
  8. a chemical reaction that requires heat
  9. a reaction in which a single compound breaks down to form two or more simpler substances
  10. a solid that is produced as a result of a chemical reaction in solution
  11. a small whole number that appears as a factor in front of a formula in a chemical equation

17 Clues: a chemical reaction that requires heat • a substance that forms in a chemical reaction • a substance or molecule that participates in a chemical reaction • a chemical reaction in which heat is released to the surroundings • a solid that is produced as a result of a chemical reaction in solution • ...

Lillian Shooter, Jan. 10, PS211, Vocabulary 7 2024-01-10

Lillian Shooter, Jan. 10, PS211, Vocabulary 7 crossword puzzle
Across
  1. Two compounds swap cations or anions with each other
  2. States that during a chemical reaction, no energy is created or destroyed but only changed from one form to another
  3. Reactions that release heat
  4. The gaining of electrons during a chemical reaction
  5. The number placed in front of a chemical formula within a chemical equation
  6. One element in a compound is replaced by another element
  7. States that we need three things to happen before reactants will react
  8. The energy needed to get a chemical reaction started
  9. The reactants form products, but the products can also react together to re-form the original reactants.
  10. The mass of one mole of a substance
  11. Any instance in which electrons are lost
  12. Substances combine to produce these
  13. A process that changes a substance into one or more different substances
Down
  1. States that any chemical system in equilibrium will adjust its equilibrium state in such a way as to reduce the effect of any changes made to the system.
  2. Substances that enter into a chemical reaction
  3. A combination of chemical formulas and symbols that model a chemical reaction
  4. A reaction that absorbs more energy than it releases
  5. Slow the rate of a reaction by reducing the effectiveness of catalysts
  6. A single reactant breaks down into two or more products, the opposite of a synthesis reaction.
  7. The speed of a reaction
  8. Occurs when the forward and reverse reactions change
  9. A substance that helps a reaction happen faster but is not used up in the reaction
  10. Combine two or more reactants into a single, more complex product
  11. A substance, usually called a fuel, reacts with oxygen
  12. A defined quantity of items

25 Clues: The speed of a reaction • Reactions that release heat • A defined quantity of items • The mass of one mole of a substance • Substances combine to produce these • Any instance in which electrons are lost • Substances that enter into a chemical reaction • The gaining of electrons during a chemical reaction • Two compounds swap cations or anions with each other • ...

Chapter 7 Vocab 2025-03-25

Chapter 7 Vocab crossword puzzle
Across
  1. combine two or more reactants into a single, more complex product
  2. slow the rate of a reaction be reducing the effectiveness of catalysts
  3. one element in a compound is replaced by another element
  4. when elements, especially metals, react with oxygen
  5. a combination of chemical formulas and symbols that models a chemical reaction
  6. states that we need three things to happen before reactants will react
  7. two compounds swap cations or anions with each other
  8. states that any chemical system in equilibrium will adjust its equilibrium state in such a way as to reduce the effect of any changes made to the system
  9. a substance that helps a reaction happen faster but is not used up in the reaction
  10. states that during a chemical reaction no energy is created or destroyed, but only changed from one form to another
Down
  1. the energy needed to get a chemical reaction started
  2. a process that changes a substance into one or more different substances
  3. the number placed in front of a chemical formula within a chemical equation
  4. speed of a reaction
  5. the substances that reactants combine to produce
  6. a defined quantity of items
  7. occurs when the forward and reverse reactions each happen at the same rate
  8. the substances that enter into a chemical reaction
  9. the mass of one mole of a substance
  10. when a single reactant bond breaks down into two or more products
  11. a reaction that is able to be reversed or reverted
  12. when a substance, usually a fuel, reacts with oxygen
  13. a reaction that absorbs more energy than it releases
  14. reactions that release energy as heat
  15. the gaining of electrons during a chemical reaction

25 Clues: speed of a reaction • a defined quantity of items • the mass of one mole of a substance • reactions that release energy as heat • the substances that reactants combine to produce • the substances that enter into a chemical reaction • a reaction that is able to be reversed or reverted • when elements, especially metals, react with oxygen • ...

Chemical Reactions 2013-12-11

Chemical Reactions crossword puzzle
Across
  1. Ions that do not participate in the reaction
  2. A chemical reaction in which a compund breaks down into two or more elements or new compunds
  3. The substances that you start with
  4. One or more substances dissolved in a solution
  5. A statement that uses chemical formulas to show the identies and relative amouts of the substances involved in a chemical reaction
  6. A chemical reaction that involves an exchange of iion between two compounds
  7. The number written in front of a reactant or product
  8. A solution in which the solvent is water
  9. A chemical reaction where oxygen combines with a substance and releases heat and light energy
  10. The substance that dissolves a solute to form a solution
  11. A uniform mixture that might contain solids, liquids, or gases
  12. A solid produced during a chemical reaction in a solution
Down
  1. The substances formed during a chemical reaction
  2. A chemical reaction in which the atoms of one element replace the atoms of another element in a compound
  3. An element that is a solid at room temperature, conducts electricity, and is generally shiny
  4. When atoms of one or more substances are rearranged to form different substances
  5. A process in which a substance is changed into a new substance
  6. An ionic equation that shows all of the particles in a solution as they exist
  7. An ionic equation that includes only the particles that participate in the reaction
  8. A chemical reaction where two substances react to form a single product

20 Clues: The substances that you start with • A solution in which the solvent is water • Ions that do not participate in the reaction • One or more substances dissolved in a solution • The substances formed during a chemical reaction • The number written in front of a reactant or product • The substance that dissolves a solute to form a solution • ...

Vocabulary for Reactions 2022-02-10

Vocabulary for Reactions crossword puzzle
Across
  1. a positively charged ion; formed when one or more electrons are removed from an atom
  2. ions made up of more than one atom
  3. bond the electrostatic force that holds oppositely charged particles together in an ionic compound
  4. a statement that used chemical formulas to show the identities and relative amounts of the substances involved in a chemical reaction
  5. a solid produced during a chemical reaction in a solution
  6. compound that contains ionic bonds
  7. a chemical reaction that occurs when a single compound breaks down into two or more elements or new compounds
  8. a chemical reaction in which heat is released to the surroundings
Down
  1. a rearrangement of the atoms in one or more substances to form different substances
  2. the number written in front of the chemical formulas in a balanced chemical equation; coefficients indicate the relative numbers of reactants and products in the reaction
  3. a negatively charged ion; formed when one or more electrons are added to an atom
  4. forms when two or more atoms bond covalently
  5. a replacement reaction in which the atoms of one element replace the atoms of another element in a compound
  6. the force that holds two atoms together
  7. a chemical reaction in which oxygen combines with a substance and releases energy in the form of heat and light
  8. the starting substances in a chemical reaction
  9. A type of covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive.
  10. A reaction that ABSORBS energy in the form of heat
  11. a chemical reaction in which two or more substances react to yield a single product
  12. the substances that are formed by the chemical change
  13. a replacement reaction in which ions are exchanged between two compounds

21 Clues: ions made up of more than one atom • compound that contains ionic bonds • the force that holds two atoms together • forms when two or more atoms bond covalently • the starting substances in a chemical reaction • A reaction that ABSORBS energy in the form of heat • the substances that are formed by the chemical change • ...

Alex Zheng 413 2024-02-07

Alex Zheng 413 crossword puzzle
Across
  1. Active site is changed and can no longer bind
  2. Breaks down fats
  3. A reactant
  4. Area where the enzyme and substrate bind
  5. Something that prevents or interferes with a chemical reaction
  6. something that speeds up chemical reactions
  7. Polymer of amino acids
  8. Measures how acidic or basic a substance is
  9. Breaks down hydrogen peroxide into oxygen and water
  10. Breaks down lactose
  11. A type of reaction that involves the breakdown of a large molecule
  12. A reaction that involves building polymer
  13. Monomer that lactose breaks down into
Down
  1. Breaks down starch in human saliva
  2. Type of protein
  3. Something that takes part in a chemical reaction
  4. Measures the intensity of heat in an area
  5. The chemical name for sugar
  6. Chemical reaction that turns food into energy
  7. Makes up enzymes and proteins
  8. The amount of energy required to get a reaction
  9. Breaks down proteins
  10. Present in saliva and breaks down maltose
  11. Similar to glucose and also a part of lactose
  12. Result of a chemical reaction

25 Clues: A reactant • Type of protein • Breaks down fats • Breaks down lactose • Breaks down proteins • Polymer of amino acids • The chemical name for sugar • Makes up enzymes and proteins • Result of a chemical reaction • Breaks down starch in human saliva • Monomer that lactose breaks down into • Area where the enzyme and substrate bind • Measures the intensity of heat in an area • ...

Chemical reactions 2024-06-07

Chemical reactions crossword puzzle
Across
  1. The colour of a Sodium ion in a flame test
  2. one of the five observations that shows a chemical reaction has happened
  3. the name for a solid that forms in a chemical reaction
  4. The colour of a Lithium ion in a flame test
  5. The colour of a Calcium ion in a flame test
  6. the colour of a Copper ion in a flame test
  7. The colour of a Barium ion in a flame test
  8. this evidence shows that a gas is being produced
  9. the chemical that start a chemical reaction
  10. the molten metal made at 2500C from the thermite reaction
Down
  1. a chemical reaction that can go forwards and backwards
  2. has the formula CO2
  3. this is a chemical reaction where oxygen is added
  4. Lithium Sodium and Potassium all belong to this reactive group of metals
  5. a gas that is added to swimming pools to kill viruses and bacteria
  6. the gas that makes a squeeky pop when it is set alight
  7. the name for a reaction that gets colder
  8. this is another name for burning
  9. the chemicals that are made in a chemical reaction
  10. the name for a reaction that gets hotter
  11. the colour of a Potassium ion in a flame test

21 Clues: has the formula CO2 • this is another name for burning • the name for a reaction that gets colder • the name for a reaction that gets hotter • The colour of a Sodium ion in a flame test • the colour of a Copper ion in a flame test • The colour of a Barium ion in a flame test • The colour of a Lithium ion in a flame test • The colour of a Calcium ion in a flame test • ...

Chemical Reactions 2022-01-06

Chemical Reactions crossword puzzle
Across
  1. a chemical reaction that requires thermal energy in order to proceed
  2. substance used to speed up a chemical reaction
  3. two or more substances combine to form another substance
  4. SI unit for quantity of a substance that equals 6.022 X 10(23)
  5. a shorthand method to describe a chemical reaction
  6. thermal energy is given off during a chemical reaction
  7. when the positive ion of one compound replaces the positive ion of another to create 2 new compounds
  8. chemical reactions that release energy
  9. a state of balance, in which forward and reverse processes occur at equal rates
  10. represent the number of units of each substance taking part in a reaction
  11. the chemical reaction in which one element replaces another element
  12. states that ions, atoms, and moles must collide in order to react
Down
  1. the rate at which reaction turn into products
  2. an insoluble compound that comes out of a solution during a chemical reaction
  3. to gain electrons
  4. energy absorbed during a chemical reaction usually in the form of thermal energy, light or electricity
  5. when a substance reacts with oxygen to produce energy in the form of heat or light
  6. when when substance breaks down to form or decomposes into 2 or more substances
  7. loss of electrons
  8. substances used to slow down chemical reactions
  9. when an equation has the same of of atoms of an element on each side of the arrow
  10. the mass in grams of 1 mole of a substance
  11. the new substances produced in a chemical reaction
  12. a change in which one or more substances change into new substance(s)
  13. the starting substances that react

25 Clues: to gain electrons • loss of electrons • the starting substances that react • chemical reactions that release energy • the mass in grams of 1 mole of a substance • the rate at which reaction turn into products • substance used to speed up a chemical reaction • substances used to slow down chemical reactions • a shorthand method to describe a chemical reaction • ...

Alex's crossword puzzle 2 2015-11-30

Alex's crossword puzzle 2 crossword puzzle
Across
  1. /4
  2. acid /HCl
  3. yield / the ratio of the actual yield to the theoretical yield times 100.
  4. reaction / A+BX>AX+B
  5. series / list of elements organized according to the ease of undergoing a chemical reaction.
  6. /5
  7. reaction / chemical reaction which the products re-form the original reactants.
  8. / energy absorbed or released as heat in a chemical change.
  9. reactant / the reactant that limitis the amount the other reaction can use.
  10. /HI
  11. reactant / the substance that is not used up completely in a reaction.
Down
  1. acid / H2SO4
  2. / Cl2(g)+2KBr(aq)>
  3. reaction / AX>A+X
  4. / the study of the transfers of energy as heat that accompany chemical reactions.
  5. reaction / AX+BY>AY+BX
  6. yields / measured amount of a product obtained from a reaction.
  7. / a measure of the lenetic energy of the particles in a sample of matter.
  8. equation / represented with formulas.
  9. acid /HClO4
  10. /2
  11. /3
  12. yield / the maximum amount of product that can be produced.
  13. acid / HBr
  14. reaction / A+X>AX
  15. / 1

26 Clues: /4 • /2 • /3 • /5 • / 1 • /HI • acid /HCl • acid / HBr • acid /HClO4 • acid / H2SO4 • reaction / AX>A+X • reaction / A+X>AX • / Cl2(g)+2KBr(aq)> • reaction / A+BX>AX+B • reaction / AX+BY>AY+BX • equation / represented with formulas. • yield / the maximum amount of product that can be produced. • / energy absorbed or released as heat in a chemical change. • ...

Vocab 5 2023-11-09

Vocab 5 crossword puzzle
Across
  1. The process or effect of simplifying a single chemical entity into two or more fragments
  2. Matter cannot be created nor destroyed the same # and type of atoms must be present after the chemical reaction
  3. A representation of a chemical reaction using symbols of the element to indicate the amount of a substance
  4. A compound of hydrogen and carbon
  5. Simplest form of the equation/reaction
  6. A chemical process in which a substance reacts rapidly w/ oxygen and gives off heat
  7. Ion that contains more than one atom
  8. Process that leads to the chemical transformation of one set of chemical substance to another
Down
  1. Tells us the number of atoms of each element in a compound
  2. Number that comes after a symbol and below
  3. Indicates that the reaction goes from the reactants to products
  4. Substances formed due to chemical substances
  5. Number in front of the formula
  6. Positive or negative charge of an ion depends on e- configuration and # of valence e-
  7. A reaction in which one element replaces a similar element in a compound
  8. A substance that takes part in and undergoes change during a reaction
  9. The construction of complex chemical compounds from simpler ones
  10. An equation for a chemical reaction in which the # of atoms for each element in the reaction and the total charge are the same for both the reactants and the products
  11. Set of rules to generate systematic names for compounds
  12. A chemical reaction where two reactant iconic compounds exchange with the same ions

20 Clues: Number in front of the formula • A compound of hydrogen and carbon • Ion that contains more than one atom • Simplest form of the equation/reaction • Number that comes after a symbol and below • Substances formed due to chemical substances • Set of rules to generate systematic names for compounds • Tells us the number of atoms of each element in a compound • ...

Combustion and chemical reactions 2024-02-13

Combustion and chemical reactions crossword puzzle
Across
  1. Substances formed as a result of a chemical reaction.
  2. Change: A transformation in which one or more substances are converted into different substances with new properties.
  3. Visible, glowing gas produced during combustion.
  4. Combustion: Combustion in which the supply of oxygen is limited, resulting in the formation of partially burned products.
  5. Substances that undergo a chemical reaction.
  6. The initiation of combustion or the point at which a substance starts to burn.
  7. Equation: A symbolic representation of a chemical reaction, showing the reactants and products.
  8. The process of a substance combining with oxygen, often accompanied by the release of heat.
  9. Reaction: A type of chemical reaction where two or more substances combine to form a new, more complex substance.
  10. Reaction: A type of chemical reaction where a single substance breaks down into two or more simpler substances.
  11. A substance that undergoes combustion to produce heat or energy.
  12. Absorbing heat during a chemical reaction.
Down
  1. A substance that speeds up a chemical reaction without being consumed in the process.
  2. The process of burning, usually involving the combination of a substance with oxygen.
  3. Releasing heat during a chemical reaction.
  4. Reaction: A process where substances are transformed into new substances with different properties.
  5. The gain of electrons by a substance during a chemical reaction.
  6. Capable of undergoing combustion; flammable.
  7. Combustion: Combustion in which a sufficient supply of oxygen is available, leading to the formation of complete combustion products.
  8. A chemical element essential for combustion, supporting the burning of materials.

20 Clues: Releasing heat during a chemical reaction. • Absorbing heat during a chemical reaction. • Substances that undergo a chemical reaction. • Capable of undergoing combustion; flammable. • Visible, glowing gas produced during combustion. • Substances formed as a result of a chemical reaction. • The gain of electrons by a substance during a chemical reaction. • ...

CHEMISTRY REVIEW 2025-03-18

CHEMISTRY REVIEW crossword puzzle
Across
  1. – The process of coating metal, usually steel or iron, with a layer of zinc to prevent rusting.
  2. Composition Reactions – Reactions where two or more substances combine to form one new compound.
  3. - A metal used to protect iron rusting.
  4. – The substances formed as a result of a chemical reaction.
  5. Reaction – A process where substances change into new substances with different properties.
  6. – A chemical used to kill or control unwanted plants (weeds).
  7. – A substance that has a pH above 7 and produces hydroxide ions (OH⁻) in water.
  8. – A reaction that absorbs heat energy.
  9. – A solid that forms from a chemical reaction in a solution.
  10. Reaction – A chemical reaction where a substance burns in oxygen, releasing heat and light.
Down
  1. Change – A change in a substance’s form or appearance without altering its chemical composition.
  2. – A type of pesticide specifically used to kill insects.
  3. Dioxide - A gas responsible for acid rain, along with Nitrogen Oxides.
  4. – A method used to remove pollutants from industrial exhaust gases using liquid sprays or filters.
  5. – A large molecule made of repeating smaller units called monomers.
  6. Material – A man-made substance created through chemical processes.
  7. Reaction – A chemical reaction between an acid and a base that produces water and a salt.
  8. Decomposition Reactions – Reactions where one compound breaks down into two or more simpler substances.
  9. – A substance that has a pH below 7 and produces hydrogen ions (H⁺) in water.
  10. – A substance used to eliminate or control pests.
  11. – A reaction that releases heat energy.
  12. – A mixture of two or more metals or a metal and another element.
  13. – The starting substances in a chemical reaction.

23 Clues: – A reaction that absorbs heat energy. • - A metal used to protect iron rusting. • – A reaction that releases heat energy. • – A substance used to eliminate or control pests. • – The starting substances in a chemical reaction. • – A type of pesticide specifically used to kill insects. • – The substances formed as a result of a chemical reaction. • ...

Chem - Reactions and Stoich Vocab 2021-10-01

Chem - Reactions and Stoich Vocab crossword puzzle
Across
  1. a small whole number that appears in front of a formula in a chemical equation
  2. a representation, with symbols and formulas, and coefficients of what is happening in a chemical reaction
  3. the decomposition of a substance by an electric current (259)
  4. a reaction in which the ions of two compounds exchange places in an aqueous solution to form two new compounds
  5. a solid that is produced as a result of a chemical reaction in solution and that separates from the solution
  6. a reaction in which a single compound produces two or more simpler substances
  7. the measured amount of a product obtained from a reaction (293)
  8. a reaction in which two or more substances combine to form a new compound
  9. the substance that is not used up completely in a reaction (288)
Down
  1. a list of elements organized according to the ease with which the elements undergo certain chemical reactions - 265
  2. the reactant that limits the amounts of the other reactants that can combine—and the amount of product that can form—in a chemical reaction (288)
  3. calculations involving a chemical equation, mass, or Liters and moles
  4. a reaction in which one element replaces a similar element in a compound
  5. a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction (276)
  6. the ratio of the actual yield to the theoretical yield, multiplied by 100 (293)
  7. the maximum amount of product that can be produced from a given amount of reactant (293)
  8. chemicals produced in a chemical reaction
  9. a reaction in which a substance combines with oxygen, releasing a large amount of energy in the form of light and heat
  10. chemicals combined to react in a chemical reaction

19 Clues: chemicals produced in a chemical reaction • chemicals combined to react in a chemical reaction • the decomposition of a substance by an electric current (259) • the measured amount of a product obtained from a reaction (293) • the substance that is not used up completely in a reaction (288) • calculations involving a chemical equation, mass, or Liters and moles • ...

Chemical Energetics 2025-03-18

Chemical Energetics crossword puzzle
Across
  1. The process of releasing energy when atoms form new chemical bonds (exothermic).
  2. The substances formed after a chemical reaction has taken place.
  3. The starting substances in a chemical reaction that undergo change.
  4. Chemical bonds that require less energy to break, such as Van der Waals forces in gases.
  5. The minimum energy required for reactants to collide and start a reaction.
  6. A process where reactants rearrange their atoms to form new products with different properties.
  7. The movement of thermal energy from a hotter region to a cooler one during a reaction.
  8. The energy change when one mole of a compound is formed from its elements.
  9. The process where a system takes in energy from its surroundings (as in endothermic reactions).
Down
  1. A chemical reaction where a substance reacts with oxygen, releasing heat and light.
  2. The study of heat changes in chemical reactions.
  3. A reaction that releases heat energy into the surroundings, making them warmer (ΔH is negative).
  4. The amount of energy required to break one mole of a chemical bond in a gaseous state.
  5. A reaction that absorbs heat energy from the surroundings, making them colder (ΔH is positive).
  6. A diagram that shows the energy changes during the course of a reaction, including activation energy.
  7. A graphical representation showing how energy changes throughout a chemical reaction.
  8. Chemical bonds that require a large amount of energy to break, such as covalent bonds in diamond.
  9. The overall heat energy change in a chemical reaction, represented by ΔH.
  10. The process where a system gives off energy to its surroundings (as in exothermic reactions).
  11. The process of absorbing energy to separate atoms in a molecule (endothermic).

20 Clues: The study of heat changes in chemical reactions. • The substances formed after a chemical reaction has taken place. • The starting substances in a chemical reaction that undergo change. • The overall heat energy change in a chemical reaction, represented by ΔH. • The minimum energy required for reactants to collide and start a reaction. • ...

Combustion and chemical reactions 2024-02-13

Combustion and chemical reactions crossword puzzle
Across
  1. Reaction: A type of chemical reaction where two or more substances combine to form a new, more complex substance.
  2. A chemical element essential for combustion, supporting the burning of materials.
  3. Visible, glowing gas produced during combustion.
  4. Substances formed as a result of a chemical reaction.
  5. The initiation of combustion or the point at which a substance starts to burn.
  6. Substances that undergo a chemical reaction.
  7. Absorbing heat during a chemical reaction.
  8. The process of burning, usually involving the combination of a substance with oxygen.
Down
  1. Capable of undergoing combustion; flammable.
  2. Releasing heat during a chemical reaction.
  3. Combustion: Combustion in which a sufficient supply of oxygen is available, leading to the formation of complete combustion products.
  4. The gain of electrons by a substance during a chemical reaction.
  5. The process of a substance combining with oxygen, often accompanied by the release of heat.
  6. Reaction: A type of chemical reaction where a single substance breaks down into two or more simpler substances.
  7. A substance that undergoes combustion to produce heat or energy.
  8. Combustion: Combustion in which the supply of oxygen is limited, resulting in the formation of partially burned products.
  9. A substance that speeds up a chemical reaction without being consumed in the process.
  10. Change: A transformation in which one or more substances are converted into different substances with new properties.
  11. Reaction: A process where substances are transformed into new substances with different properties.
  12. Equation: A symbolic representation of a chemical reaction, showing the reactants and products.

20 Clues: Releasing heat during a chemical reaction. • Absorbing heat during a chemical reaction. • Capable of undergoing combustion; flammable. • Substances that undergo a chemical reaction. • Visible, glowing gas produced during combustion. • Substances formed as a result of a chemical reaction. • The gain of electrons by a substance during a chemical reaction. • ...

Chem Review 4/24 2023-04-23

Chem Review 4/24 crossword puzzle
Across
  1. Found on the periodic table. The mass of 1 mole of a substance.
  2. A chemical substance that is present at the start of a chemical reaction
  3. C2H3O2 -1
  4. Comes from the coefficients of a balanced chemical equation. The ratio in which two substances will react in a chemical reaction.
  5. SO4 -2
  6. (s)
  7. NO3 -1
  8. A substance reacts with oxygen
  9. A _______ change in a chemical that does NOT involve a change in the identity of the chemical
Down
  1. PO4 -3
  2. (g)
  3. AB + CD --> AD + CB
  4. A + BC --> B + AC
  5. OH -1
  6. Equal to 6.022 x 10 ^ 23 things
  7. Law of _____ of mass. Matter is neither created nor destroyed in a chemical reaction
  8. (aq)
  9. NH4 +1
  10. a chemical substance that forms in a chemical reaction
  11. A+B-->AB
  12. A______ change that changes one set of chemicals into another set of chemicals (aka a chemical reaction)
  13. CO3 -2
  14. AB--->A+B
  15. (l)
  16. Measured in grams (g). A measure of the amount of matter in an object.

25 Clues: (g) • (s) • (l) • (aq) • OH -1 • PO4 -3 • SO4 -2 • NH4 +1 • CO3 -2 • NO3 -1 • A+B-->AB • C2H3O2 -1 • AB--->A+B • A + BC --> B + AC • AB + CD --> AD + CB • A substance reacts with oxygen • Equal to 6.022 x 10 ^ 23 things • a chemical substance that forms in a chemical reaction • Found on the periodic table. The mass of 1 mole of a substance. • ...

AP CHEMISTRY_UNIT 5_KINETICS 2024-12-16

AP CHEMISTRY_UNIT 5_KINETICS crossword puzzle
Across
  1. A reaction that involves the simultaneous collision of three molecules.
  2. A catalyst that exists in a different phase than the reactants.
  3. The amount of a substance in a given volume.
  4. A species that is formed and consumed during the reaction process.
  5. A diagram showing the energy changes during a chemical reaction.
  6. An equation that links the reaction rate with the concentrations of reactants.
  7. The energy that must be overcome for a reaction to proceed.
  8. A high-energy state during a chemical reaction where bonds are breaking and forming.
  9. The sum of the powers of the concentration terms in the rate law.
  10. The number of molecules that participate in an elementary reaction.
  11. The process of increasing the rate of a reaction by adding a catalyst.
  12. The reactant on which an enzyme works.
  13. A highly reactive species with an unpaired electron.
  14. A reaction whose rate depends on the concentration of one reactant.
  15. A catalyst that exists in the same phase as the reactants.
  16. A reaction whose rate depends on the concentrations of two reactants or the square of one reactant's concentration.
  17. A factor in the Arrhenius equation representing the frequency of collisions.
  18. A reaction whose rate is independent of the concentration of reactants.
  19. The speed at which a chemical reaction occurs.
  20. A diagram showing the energy changes during each step of a multi-step reaction.
  21. A reaction that involves a single molecule.
  22. A state where the rates of the forward and reverse reactions are equal.
  23. Diagram A graph that shows the potential energy of a system as a function of the reaction coordinate.
Down
  1. The region of an enzyme where substrate molecules bind and undergo a chemical reaction.
  2. A reaction that occurs in multiple steps.
  3. The study of the rates of chemical reactions.
  4. The sequence of elementary reactions that lead to product formation.
  5. Law An equation that relates the concentration of a reactant to time.
  6. The slowest step in a reaction mechanism that determines the overall reaction rate.
  7. An equation that shows the dependence of the reaction rate on temperature.
  8. The effect of temperature on the rate of a chemical reaction.
  9. Theory stating that particles must collide to react.
  10. A reaction that occurs in a single step.
  11. A collision that results in a chemical reaction.
  12. The time required for the concentration of a reactant to decrease by half.
  13. The minimum energy required to start a chemical reaction.
  14. A reaction that involves the collision of two molecules.
  15. The sum of the exponents of the concentration terms in the rate law.
  16. A proportionality constant in the rate law equation.
  17. A substance that speeds up a chemical reaction without being consumed.
  18. The temporary, high-energy arrangement of atoms that forms during a chemical reaction.
  19. An assumption that the concentration of reaction intermediates remains constant throughout the reaction.
  20. A substance that increases the activity of a catalyst.
  21. A biological catalyst that speeds up biochemical reactions.
  22. A substance that decreases the rate of a chemical reaction.
  23. The detailed steps of a reaction mechanism.
  24. A reaction in which the products of one step initiate further reactions.
  25. The series of steps by which reactants transform into products.

48 Clues: The reactant on which an enzyme works. • A reaction that occurs in a single step. • A reaction that occurs in multiple steps. • The detailed steps of a reaction mechanism. • A reaction that involves a single molecule. • The amount of a substance in a given volume. • The study of the rates of chemical reactions. • The speed at which a chemical reaction occurs. • ...

CHEM CROSSWORD 2014-11-12

CHEM CROSSWORD crossword puzzle
Across
  1. example of compound
  2. created from a baking soda and vinegar reaction
  3. anything on the periodic table
  4. an example of a slow chemical reaction
  5. solids ________ into liquids
  6. help speed up a reaction
  7. created the modern periodic table
  8. pure substances formed as a result of attraction via ions
  9. heating up a reaction
  10. indivisible
  11. a compound made from 2 non metals
  12. made of many substances
Down
  1. one
  2. type of pure substance
  3. carbon can make this
  4. a reaction that changes state
  5. made of one type of matter
  6. one or more products can escape
  7. takes up space
  8. an example of a fast chemical reaction
  9. speed up the break down of food
  10. an experiment where all the reactants are accounted for
  11. type of reaction that produces a gas, heat, or odor
  12. found on the right of a chemical word equation
  13. found on the left of a chemical word equation

25 Clues: one • indivisible • takes up space • example of compound • carbon can make this • heating up a reaction • type of pure substance • made of many substances • help speed up a reaction • made of one type of matter • solids ________ into liquids • a reaction that changes state • anything on the periodic table • one or more products can escape • speed up the break down of food • ...

IGCSE - Topic 3 - Stoichiometry 2023-11-30

IGCSE - Topic 3 - Stoichiometry crossword puzzle
Across
  1. The calculation of reactants and products in chemical reactions based on balanced chemical equations.
  2. The volume of gases involved in a chemical reaction, often measured under the same conditions of temperature and pressure.
  3. The simplest whole number ratio of elements in a compound.
  4. The ratio of the actual yield to the theoretical yield, expressed as a percentage.
  5. The reactant that is completely consumed in a chemical reaction, limiting the amount of product formed.
  6. The principle stating that mass is neither created nor destroyed in a chemical reaction.
  7. The amount of product obtained in a chemical reaction.
  8. The SI unit for amount of substance, representing Avogadro's number of entities (atoms, molecules, ions).
  9. The amount of product obtained from a chemical reaction under real experimental conditions.
  10. A substance formed as a result of a chemical reaction.
Down
  1. A type of chemical reaction where a substance reacts with oxygen, producing heat and usually light.
  2. The maximum amount of product that can be formed in a chemical reaction, calculated from stoichiometric calculations.
  3. Number The number of entities (atoms, molecules, ions) in one mole, approximately 6.022×1023
  4. A substance that undergoes a chemical change in a reaction.
  5. Mass The mass of one mole of a substance, expressed in grams per mole (g/mol).
  6. The reactant that is not completely consumed in a chemical reaction.
  7. The ratio of moles of one substance to moles of another substance in a balanced chemical equation.
  8. The actual number of each type of atom in a molecule.

18 Clues: The actual number of each type of atom in a molecule. • The amount of product obtained in a chemical reaction. • A substance formed as a result of a chemical reaction. • The simplest whole number ratio of elements in a compound. • A substance that undergoes a chemical change in a reaction. • The reactant that is not completely consumed in a chemical reaction. • ...

Chemistry Vocabulary 2015-06-12

Chemistry Vocabulary crossword puzzle
Across
  1. A compound that taste bitter, has a slippery texture, corrodes tissue, and turns red litmus paper blue
  2. A type of reaction in which one compound breaks down into two or more simpler compounds or elements
  3. An equation that uses chemical symbols to represent reactants and products in a chemical reaction
  4. An atom or a group of atoms that has an electrical charge, either positive or negative
  5. A change in matter that produces new substances with new properties
  6. A type of chemical reaction in which one element takes the place of another element in a compound
  7. Non-toxic base that is used to neutralize stomach acid; relieves the pain of excess stomach acid (acid reflux or heartburn)
  8. Represents a chemical reaction using coefficients (numbers in front of the reactants and products) that tell you how much of the reactants are used and how much of the products are made
  9. Reduced in concentration be being mixed with a liquid, such as water
Down
  1. A type of chemical reaction in which the metal ions of two different compounds exchange places
  2. A chemical reaction in which two or more reactants combine to produce a new product
  3. A substance that changes colour when added to an acid or a base
  4. During a chemical reaction. The total mass and number of atoms of the reactants equal to total mass and number of atoms of the products
  5. A chemical reaction between an acid and a base that “neutralizes” their acidic and basic properties
  6. Uses words instead of chemical formulas to describe what happens to reactants and products during a chemical reaction
  7. A scale from 0 to 14 that describes how acidic or basic a substance is
  8. New substances produced in a chemical reaction
  9. A compound that taste sour, corrodes metals and tissue, and turns blue litmus paper red
  10. Substances that react together in a chemical reaction
  11. A group of letters and subscript numbers that represent the make-up of a chemical compound

20 Clues: New substances produced in a chemical reaction • Substances that react together in a chemical reaction • A substance that changes colour when added to an acid or a base • A change in matter that produces new substances with new properties • Reduced in concentration be being mixed with a liquid, such as water • ...

Module 19 Vocabulary 2023-01-26

Module 19 Vocabulary crossword puzzle
Across
  1. states that atoms, ions, and molecules must colloid in order to react
  2. a reaction in which two or more substances combine to form another substance
  3. a state in which forward and reverse reactions occur at the same rate.
  4. an insoluble compound that comes out of a solution
  5. the rate at which reactants change into products
  6. reaction that requires more energy to break bonds than is released when new ones are formed
  7. a substance that speeds up a chemical reaction without being permanently changed itself
  8. reaction that gives off thermal energy
  9. a reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light
Down
  1. a way to describe a chemical reaction using chemical formulas and other symbols
  2. a chemical reaction in which one element replaces another element in the compound
  3. the starting substances that react in a chemical reaction
  4. a chemical equation with the same number of atoms of each element on both sides of the arrow
  5. the amount of substance that contains 6.02 x10²³ particles of that substance
  6. a reaction in which one substance breaks down, or decomposes, into two or more substances
  7. loss of electrons
  8. substance used to slow down the rates of chemical reactions or prevent a reaction from happening at all
  9. chemical reactions that release energy
  10. a reaction that can occur in both the forward and reverse directions
  11. a change in which one or more substances are converted into new substances
  12. a reaction in which the positive ion of one compound replaces the positive ion of another compound resulting in two new compounds
  13. _________'s principle states that if a stress is applied to a system at equilibrium the equilibrium shifts in the direction that opposes the stress
  14. When the energy needed to keep a reaction going is in the form of thermal energy, the reaction is called an _____ _______.
  15. the mass in grams of one mole of a substance
  16. the substances produced in a chemical reaction
  17. gain of electrons
  18. represent the number of units of each substance taking part in a reaction

27 Clues: loss of electrons • gain of electrons • chemical reactions that release energy • reaction that gives off thermal energy • the mass in grams of one mole of a substance • the substances produced in a chemical reaction • the rate at which reactants change into products • an insoluble compound that comes out of a solution • ...