Water molecules move back and forth between the liquid and gaseous phases

Question

Quizplus · Accepted Answer

Water molecules are in constant motion due to their kinetic energy. Some water molecules have enough energy to escape the liquid phase and become water vapor in the air. This process is known as evaporation. Conversely, water vapor molecules near the surface of a liquid can lose energy and return to a liquid state through condensation. This means that water molecules are always moving back and forth between the liquid and gaseous phases, regardless of the saturation level or humidity.

Water Molecules Move Back and Forth Between the Liquid and Gaseous