key term - Sublimation

Definition

Sublimation is the process in which a substance changes from a solid to a gas without passing through the liquid state.

Related terms

Phase Change:

A change from one state (solid, liquid, gas) to another without a change in chemical composition.

Deposition:

The direct transformation of a gas into a solid without going through the intermediate liquid phase.

Triple Point:

The specific temperature and pressure at which all three phases (solid, liquid, and gas) of a substance can coexist in equilibrium.