Give two examples of reversible physical changes.

Two examples of reversible physical changes are melting of ice and dissolving of salt in water. A reversible physical change is a change that can be undone, and the original substance can be obtained again without changing its chemical properties.

Examples

• Melting of Ice: Ice melts to water, and water can be frozen back into ice.
• Dissolving of Salt: Salt dissolves in water, and it can be recovered by evaporation.

Other Examples

• Stretching of a rubber band
• Folding of paper

In all these cases, no new substance is formed, and the change can be reversed.