Question

What are the two types of energy changes that can occur in a chemical reaction?

Answer 1

Energy can either be absorbed(endothermic reaction) or can be released(exothermic reaction).

Answer 2

Answer:

Chemical reactions often involve changes in energydue to the breaking and formation of bonds.Reactions in which energyis released are exothermic reactions, while those that take in heat energy are endothermic.