Hello. This question is incomplete. The full question is:
"Which statement identifies a difference between endothermic and exothermic chemical reactions? Endothermic reactions store energy and exothermic reactions release energy. Endothermic reactions occur faster than exothermic reactions. Endothermic reactions create organic matter and exothermic reactions create inorganic matter. Endothermic reactions decompose matter and exothermic reactions synthesize matter."
Answer:
Endothermic reactions store energy and exothermic reactions release energy.
Explanation:
Endothermic and Exothermic reactions are quantities that measure the amount of heat (energy) absorbed and released during chemical reactions. They are studied by thermochemistry.
Endothermic reaction is one in which there is energy absorption. In this process, energy is produced and is independently maintained. Birds and mammals have the ability to maintain body temperature stability. For this reason they are called endothermic animals, popularly, "warm-blooded animals".
Exothermic reaction is one in which energy is released. In this process, the production of energy only persists through the continuous supply of energy. The change in physical states, in that order: gaseous, liquid and solid, is an example of an exothermic reaction. Each of them occurs as energy is released, that is, when there is less heat.