Match each word from column a with the correct definition from column b.
column a
1. element
2. compound
3. reaction
4. catalyst
5. neutralize
6. conservation
column b.
a. to make an acid or base chemically neutral
b. the keeping of animals, people, or places safe
c. a substance made up of two or more elements
d. a substance that is made of only one kind of atom
e. a substance that increases the rate of a reaction but is not used up
f. a process by which certain chemicals interact to form new products