Question

Which of the following occurs in an endothermic reaction but not in an exothermic reaction?

A. Chemical bonds are broken.
B. Atoms are rearranged.
C. Energy is absorbed.

Answer 1

C. Energy is absorbed.

Explanation:

In an endothermic reaction, energy is absorbed from the surroundings, resulting in an increase in the internal energy of the system. This means that the products of the reaction have a higher energy content than the reactants, and energy is stored in the chemical bonds of the products.

Therefore, option C, energy absorption, occurs in an endothermic reaction.