A reversible change is a change that can be undone, meaning the original substance can be recovered. Here's a common example from everyday life:
Freezing Water
- Change: When you freeze water, it changes from a liquid to a solid state (ice).
- Reversibility: You can easily reverse this change by applying heat. The ice melts back into liquid water.
Practical Insights:
- Reversible changes are common in our daily lives: Many physical changes are reversible, like melting ice, boiling water, or dissolving sugar in water.
- Reversible changes do not create new substances: They only change the physical state or appearance of the substance.
Other Examples:
- Melting butter: Solid butter melts into liquid butter, and you can solidify it again by cooling it down.
- Stretching a rubber band: A stretched rubber band can return to its original shape when released.
- Folding a piece of paper: You can unfold a piece of paper to return it to its original flat state.
