Question

Chemical reactions ____.

a. occur only in living organisms
c. only occur outside living organisms
b. create and destroy atoms
d. produce new substances ____ 2. everyday equations describe ____.
a. thermonuclear reactions
c. chemical reactions
b. everyday processes
d. biological chemistry ____ 3. what does the symbol in a chemical equation mean

Answer 1

2.everyday equations describe -everyday processes 1.Chemical reactions-produce new substances.
3.what does the symbol in a chemical equation mean-that the reaction is reversible