Chem Crossword

2. chemical equation with the same number of atoms of each element on both sides of the equation
3. reactions in which one element replaces a similar element in a compound
5. A chemical reaction in which heat is absorbed
8. a small whole number that appears in front of a formula in a balanced chemical equation
12. a chemical reaction in which heat is released to the surroundings
13. a substance combines with oxygen, releasing a large amount of energy in the form of light and heat
17. a substance that takes part in and undergoes change during a reaction
18. a reaction in which a single compound breaks down to form two or more simpler substances
20. a reaction in which two or more substances combine to form a new compound

1. The elements or compounds produced by a chemical reaction.
4. water solavent
6. Chemical agents that selectively speed up chemical reactions without being consumed by the reaction.
7. Matter is not created nor destroyed in any chemical or physical change
9. change substances into different substances by breaking and forming chemical bonds
10. reactions in which the ions of two compounds exchange places in an aqueous solution to form two new compounds
11. The reactant that is completely consumed in a chemical reaction, limiting the amount of product formed.
14. the reactants that bind to the enzyme
15. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
16. the minimum amount of energy required to start a chemical reaction
19. Catalysts for chemical reactions in living things