Chemical Reactions

1. A characteristic of a substance that describes how it can form a new substance. (chemical________)
6. A chemical reaction that requires heat energy in order to proceed. (___________reaction)
8. A substance consisting of more than one element. (chemical________)
9. A substance that reacts with another substance in a chemical reaction.
12. The number before a chemical formula that shows how many molecules are involved in a chemical reaction.
13. A substance that slows down a chemical reaction or prevents it from occurring.
14. Any change in size, shape, or state of matter in which the identity of the substance remains the same.

2. A chemical reaction in which energy is primarily given off in the form of heat. (__________reaction)
3. A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
4. A process where substances react with each other and form new substances with other properties. (chemical________)
5. A substance formed in a chemical reaction.
7. a chemical compound with oxygen.
8. A change of one substance into a new substance (chemical_____)
10. The loss of electrons from the atoms of a substance.
11. A substance that speeds up a chemical reaction without being permanently changed itself.