The direct transition from a solid to a gas may occur through which of the following processes?

Question

Quizplus · Accepted Answer

Through sublimation, a substance changes from a solid to a gas without ever passing through a liquid phase. Dry ice, solid CO₂, provides a common example of sublimation. Melting is a process that causes a substance to change from a solid to a liquid. Melting occurs when the molecules of a solid speed up enough that the motion overcomes the attractions so that the molecules can move past each other as a liquid. Chemical decomposition is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds. Condensation is the change of the physical state of matter from gas phase into liquid phase, and is the reverse of evaporation (liquid to gas).

The Direct Transition from a Solid to a Gas May