Question

Which of the following physical changes shows a change in a substance’s state of matter?
1. a piece of paper being torn in half
2. clay being molded into a bowl
3. an ice cube being crushed
4. liquid water becoming steam

Answer 1

The physical change that shows a change in a substance's state of matter is:

4. liquid water becoming steam.

This process involves a transition from the liquid state to the gas state. The other options involve physical changes that do not change the state of matter (solid to solid or liquid to liquid).