Question

Which statement identifies a difference between endothermic and exothermic chemical reactions? (2 points)

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 1

the endothermic reaction stores energy and exothermic reactions release energy

Answer 2

Answer: Endothermic reactions store energy and exothermic reactions release energy.

Explanation: A process that requires energy to break the bonds and stores energy in the bonds which are formed in the reaction is an endothermic reaction.

The process in which energy is released when bonds are broken is a exothermic reaction. For example combustion is a exothermic reaction where in initially energy input along with oxygen and wax react to produce heat, carbon dioxide and water.

Thus, the correct answer is: Endothermic reactions store energy and exothermic reactions release energy.