In which of the following pairs of physical changes are both changes exothermic?
A) sublimation, evaporation
B) freezing, melting
C) freezing, condensation
D) melting, sublimation

Question

Quizplus · Accepted Answer

Freezing and condensation are both exothermic processes because they involve the release of heat to the surroundings as a substance changes from a higher energy state to a lower energy state (liquid to solid for freezing, gas to liquid for condensation).

In Which of the Following Pairs of Physical Changes Are