A change of phase takes place at a constant
A) temperature.
B) volume.
C) heat.
D) pressure.

Question

Quizplus · Accepted Answer

A change of phase (such as melting, freezing, boiling, or condensing) occurs at a constant temperature for a pure substance at a constant pressure. This is because the energy added or removed during a phase change is used to alter the structure of the substance (e.g., from solid to liquid) rather than changing its temperature.

A Change of Phase Takes Place at a Constant