Question

Chemical reactions that release energy
A) will never explode.

B) will always explode.

C) will not occur.

D) often occur spontaneously.

Answer 1

Answer: D

They often occur spontaneously, because when energy is released during a chemical reaction it does not usually happen slowly.

Answer 2

The answer is D.

Not all chemical reactions that release energy explode but some do. Most of them do occur spontaneously.