Define the following.
Reversible change

Explanation

### Step-by-Step Solution:

1. **Definition of Reversible Change**:
A reversible change is a type of change that can be reversed, meaning that the original substance can be recovered after the change has occurred.

2. **Examples of Reversible Changes**:
- **Melting of Ice**: When ice (solid) is heated, it melts into water (liquid). This process can be reversed by cooling the water back into ice.
- **Boiling of Water**: When water is heated, it turns into steam (gas). This steam can be cooled and condensed back into water.
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