Question

The above graph is a phase change diagram for water. At points B and D the water is going through a phase change. During the phase changes, what is happening to the temperature and the heat energy?
Type Answer HERE:
The temperature and the heat energy are increasing during a phase change.
The temperature remains constant and the heat energy is increasing during a phase change.
The temperature is increasing and the heat energy remains constant during a phase change.
The temperature and the heat energy remain constant during a phase change.

Answer 1

are you sure

Answer 2

The temperature remains constant and the heat energy is increasing during a phase change.

Answer 3

I apologize for the confusion. You are correct, the temperature remains constant during a phase change, while the heat energy is increasing or decreasing depending on the direction of the phase change. Thank you for pointing out the mistake.