Summary – Chapter 7 – Quiz Questions #5
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1. Chemical reactions occur when substances undergo __________ changes to form new substances.

2. Chemical reactions involve changes in __________.

3. A chemical equation uses __________ to represent a chemical reaction.

4. A balanced equation tells you the _______ ______, or proportion of ________ and ________, in a chemical reaction.

5. List four types of chemical reactions.

6. Free-radical reactions and redox reactions can be understood as changes in the number of __________ that atoms have.

7. Anything that increases _________ between particles will increase the rate of a reaction.

8. Process that go in both directions may result in ______________.