Question

Each reation releases or absorbs a very large amount of energy per atom.

Answer 1

Answer:

chemical and nuclear reaction

Explanation:

Answer 2

Answer: Option (D) is the correct answer.

Explanation:

A chemical reaction is defined as a reaction that involves exchange of electrons between the combining atoms. Not every chemical reaction releases or absorbs a very large amount of energy per atom.

On the other hand, a reaction that involves change in atomic nuclei of an atom either by splitting or combining of two atomic nuclei is known as a nuclear reaction.

For example, $^{2}_{1}H + ^{3}_{1}H \rightarrow ^{4}_{2}He + ^{1}_{0}n + Energy$

Nuclear fission is a reaction in which a large nucleus splits by absorption of energy into two atomic nuclei. Nuclear fusion is a reaction in which two atomic nuclei combine together to result in the formation of a large atomic nuclei along with release of energy.

Each nuclear reaction releases or absorbs a very large amount of energy per atom.

Therefore, we can conclude that each nuclear reaction​ releases or absorbs a very large amount of energy per atom.