Which statement best describes a physical change?

Question

A) A substance changes form but remains the same substance
B) A substance combines with another to form a new substance
C) A substance’s temperature rises without changing form
D) A substance produces light or heat as it changes

Answer 1

The statement that best describes a physical change is:

A) A substance changes form but remains the same substance.

In a physical change, the substance may change its state (such as from solid to liquid) or its appearance but does not change its chemical composition.