What is the term used to describe the change from liquid to vapor?

The term that describes the change from liquid to vapor is vaporization. This process involves the conversion of a substance from its liquid state into a gaseous state. Vaporization can occur through two primary processes: evaporation and boiling.

Evaporation specifically refers to the process where liquid molecules at the surface gain enough energy to become gaseous at temperatures below the boiling point. On the other hand, boiling is vaporization at a specific temperature and pressure, characterized by the formation of bubbles within the liquid.

In the context of the other options, condensation is the opposite process where vapor turns back into liquid, while fumigation refers to a method of pest control that uses vaporized chemicals, which is unrelated to the phase change of liquids.