Which process involves water vapor cooling and changing into a liquid?

Which process involves water vapor cooling and changing into a liquid?

• A. Condensation
• B. Evaporation
• C. Sublimation
• D. Deposition

Answer: (A)

Condensation is the process where water vapor cools and becomes a liquid. When water vapor in the air loses enough energy through cooling, the molecules move closer together and form liquid droplets—this is why you can see fog, clouds, or dew on grass. Evaporation is the opposite change, turning a liquid into vapor; sublimation is a solid turning directly into gas; and deposition is gas turning directly into a solid.

Condensation is the process where water vapor cools and becomes a liquid. When water vapor in the air loses enough energy through cooling, the molecules move closer together and form liquid droplets—this is why you can see fog, clouds, or dew on grass. Evaporation is the opposite change, turning a liquid into vapor; sublimation is a solid turning directly into gas; and deposition is gas turning directly into a solid.