The temperature change needed to turn a liquid into a solid is called the freezing point.

Here's why:

* Freezing is the process where a liquid changes its state to a solid.

* This happens when the liquid reaches its freezing point, which is the temperature at which the molecules slow down enough to form a fixed, organized structure, characteristic of a solid.

Important Notes:

* The freezing point is a specific temperature for each substance. For example, water freezes at 0 degrees Celsius (32 degrees Fahrenheit).

* The process of freezing releases heat, so the temperature of the substance may stay constant during the freezing process until all the liquid has turned into solid.

Let me know if you have any more questions about the states of matter!