Sublimation and Deposition

endothermic

Sublimation is an ______ process.

solid

Sublimation is the phase change in which a substance changes from a ________ to a gas or vapor without changing to a liquid first.

exothermic

This ______ phase change is the reverse of sublimation.

deposition

When a gas changes directly into a solid without first changing to a liquid, the phase change is called ________.