Which process describes the transformation of a vapor in the air into a liquid?

• A. Vaporization
• B. Condensation
• C. Deposition
• D. Boiling Point

Answer: (B)

Condensation is the change from a gas to a liquid. When a vapor in the air loses energy—for example, by cooling or being compressed—its molecules move closer together until they form liquid droplets. This is what creates fog, dew, and clouds: water vapor in the air condenses into liquid water. Vaporization would be the opposite, liquid turning into gas (evaporation or boiling). Deposition is gas turning directly into a solid (like frost), and the boiling point is the temperature at which a liquid boils, not a process itself.