CONTENT REVIEW: COMPLETION
On a separate sheet of paper, write the word or words that best complete each
statement.
202
1. In a
change, one kind of
matter is turned into another.
2. A chemical reaction is accompanied by a
change in the
and
of the substances.
means "yields."
3. A (An)
4. According to the law of
matter can be neither created nor de-
stroyed during a chemical reaction.
5. Two or more simple substances combine
to form a new, more complex substance in
a (an)
reaction.
6. An uncombined element replaces an ele-
ment that is part of a compound in a (an)
reaction.
7. A reaction in which energy is released is
reaction.
called a (an)
8. In an endothermic reaction, the
I have more energy.
9. The study of reaction rates is called
10. A substance that increases the rate of a
chemical reaction without itself being
changed is called a (an)