Question

Select the correct answer

Which of the following statements holds true for a chemical change?
A. In a chemical change, no new substance is formed.
B.
In a chemical change, a substance changes its phase.
C. In a chemical change, the molecular structure of a substance changes.
D
in a chemical change, one substance dissolves into another.

Answer 1

Answer: C.

In a chemical change, the molecular structure of a substance changes.

Explanation: In a chemical change when the molecular structure of a substance exhibits changes in a reaction then it corresponds to a new substance or a new substance is formed. An alter to the molecular structure of a substance makes it different to the other. Any form of phase change is not a chemical reaction but only a physical change so the remaining choices are wrong.