Question

What is a reversible change?

• A. A material changes permanently into a new material
• B. A material changes its feel or appearance, but it is still the same material
• C. A material changes into a new material, but it can be changed back
• D. A material stops existing

Answer 1

Answer: (C)

A material changes into a new material, but it can be changed back

A reversible change is a physical change that can be undone. A final substance can be converted back to the original substance without creating any new material.

An irreversible change is a permanent change that cannot be undone.

The correct answer is option $C$.