Freezing point.

Explanation

### Step-by-Step Text Solution for Freezing Point

1. **Definition of Freezing Point**: The freezing point is defined as the temperature at which a liquid turns into a solid when it is cooled.

2. **Example of Freezing Point**: A common example of freezing point is water. When water is cooled to 0 degrees Celsius (32 degrees Fahrenheit), it changes from a liquid state to a solid state, forming ice.

3. **Phase Change**: During the freezing process, the molecules in the liquid lose energy and move closer together, resulting in the formation of a solid structure.

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