Question

the input in a chemical reaction that is changed is called the
○ product
○ reactant
○ activator
○ chemical energy
schoology quiz - photosynthesis and cellular respiration

Explanation:

In a chemical reaction, reactants are the substances that undergo a chemical change to form products. Chemical energy is related to the energy stored in chemical bonds. An activator is something that increases the rate of a reaction but is not itself changed in the reaction. So the input in a chemical reaction that is changed is the reactant.

Answer:

reactant