phase change
phase transition
state change
physical change

Here five; three for species phases and two because one of the elements has a phase change.

There is also a large volume increase of about 27% associated with the phase change.

The amount of energy required for a phase change is known as latent heat.

The most recent disk responsible for these phase changes was formed in 1972.

Is this because it requires more energy for a phase change than water?

During which phase change of water is the most energy released into Earth's environment?

The only difference between the two is the direction of the phase change.

A phase change is the process by which forms of matter are altered.

Generally speaking the value is different for the type of phase change being accomplished.

In charge of negotiating what Art was calling the "phase change."