Question

What happens to the temperature during a phase change?

Answer 1

During a phase change, the temperature remains constant until the phase change is complete.

Explanation:

During a phase change, the temperature remains the same until the phase change is complete. This is how you can tell if a phase change is occurring. The phase change diagram below illustrates this concept. Notice that during a phase change, the temperature is constant, which is represented by a straight horizontal line.