Question

A substance did not change its chemical nature in a reaction. Which most likely describes the reaction?

A. It was heated.
B. It was hit with a hammer.
C. It was placed in a salt solution.
D. It was frozen.

Answer 1

B. It was hit with a hammer.

Answer 2

Answer: Option (D) is the correct answer.

Step-by-step explanation:

• A reaction in which there occurs no change in chemical composition of a substance is known as a physical change or physical reaction.

For example, freezing of water is a physical change because only change in state is taking place.

A physical change never leads to the formation of a new substance.

• On the other hand, a change which brings change in chemical composition of a substance is known as a chemical change.

For example,
`NaCl + H_(2)O \rightarrow NaOH + HCl`

A chemical change will always lead to the formation of a new compound.

Thus, we can conclude that it was frozen most likely describes the reaction.