vapor phase

Vapor phase refers to a state in which a substance exists as a gas or vapor, even if it normally turns into a liquid or solid at room temperature. It's like when water vapor rises from a boiling pot—liquid water becomes vapor, spreading through the air. This phase is important in processes like distillation and evaporation, where substances transition from liquid to gas. Understanding vapor phase helps in controlling and predicting how substances behave when heated or cooled, which is essential in many industrial, environmental, and scientific applications.