What is the term used to describe the process in which vapor molecules become liquid?

What is the term used to describe the process in which vapor molecules become liquid?

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

Answer: (B)

The correct term that describes the process in which vapor molecules become liquid is condensation. This phenomenon occurs when water vapor in the air cools down and transitions back into liquid water, often observable as dew or fog. Condensation is a crucial part of the water cycle, influencing weather patterns and contributing to the formation of clouds.

During condensation, the molecules in vapor state lose energy as they cool, allowing them to come together and form liquid droplets. This process is vital for maintaining environmental balance and is also utilized in various practical applications, such as in refrigeration and the functioning of humidifiers.

Other options represent different processes: evaporation refers to the transition from liquid to vapor, sublimation is the process where a solid changes directly into vapor without becoming liquid, and precipitation involves water falling from the atmosphere in various forms like rain or snow. These processes operate under different conditions and have distinct characteristics separate from condensation.