Question

which statement best describes an endothermic reaction? a. it releases heat, making the surroundings warmer. b. it occurs spontaneously at all temperatures. c. it does not involve any energy change. d. it absorbs heat from the surroundings.

Explanation:

An endothermic reaction is defined as a reaction that absorbs heat from the surroundings. Option a describes an exothermic reaction. Reactions don't occur spontaneously at all temperatures just because they are endothermic (this depends on entropy and Gibbs - free energy changes). All chemical reactions involve energy changes.

Answer:

D. It absorbs heat from the surroundings.