vocab

4. The reactants that bind to the enzyme
8. a substance combines with oxygen, releasing a large amount of energy in the form of light and heat
9. Catalysts for chemical reactions in living things
12. The elements or compounds produced by a chemical reaction.
16. a reaction in which a single compound breaks down to form two or more simpler substances
17. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
18. the minimum amount of energy required to start a chemical reaction
19. Chemical agents that selectively speed up chemical reactions without being consumed by the

1. a reaction in which two or more substances combine to form a new compound
2. change substances into different substances by breaking and forming chemical
3. a chemical reaction in which heat is released to the surroundings
5. reactions in which the ions of two compounds exchange places in an aqueous solution to form two new compounds
6. chemical equation with the same number of atoms of each element on both sides of the equation
7. Matter is not created nor destroyed in any chemical or physical
9. A chemical reaction in which heat is absorbed
10. a solution in which the solvent is water
11. The reactant that is completely consumed in a chemical reaction, limiting the amount of product formed.
13. a substance that takes part in and undergoes change during a reaction.
14. a small whole number that appears in front of a formula in a balanced chemical equation
15. reactions in which one element replaces a similar element in a