Reactions Vocab

2. a process in which one or more substances are changed into one or more different substances
4. a solid material that is formed in a chemical reaction that separates from the solution
6. a reaction that takes place with so little energy added to start the reaction that it seems as if no activation energy is needed
9. energy needed to start a chemical reaction
10. a reaction in which a compound breaks down
11. a reaction in which compounds exchange ions
13. a reaction in which two or more substances combine to form a new compound
15. a substance that changes the rate of a chemical reaction
16. a shorthand method used by scientists to show the changes that take place in a chemical equation

1. the substances formed in a reaction
3. a reaction that gives off energy
5. a whole number placed in front of an element or compound
7. a reaction that absorbs energy
8. a reaction that takes place when one element replaces another forming a new compound
12. the starting substances in a chemical reaction
14. catalysts that slow down chemical reactions