Complete the following sentences :
When ice melts, its volume..........................

Explanation

To complete the sentence "When ice melts, its volume...", we need to understand the behavior of water and ice during the phase change from solid to liquid.

### Step-by-Step Solution:

1. **Understand the Properties of Ice and Water**:
- Ice is less dense than liquid water. This is why ice floats on water. The molecular structure of ice causes it to occupy more space than the same mass of liquid water.

2. **Phase Change from Ice to Water**:
...