What happens when matter slowly changes state from liquid to gas?

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

Answer: (C)

Evaporation is the gradual change of a liquid into a gas, happening at the liquid’s surface as some molecules gain enough energy to escape into the air. It can occur below the liquid’s boiling point, so it’s a slow process compared to boiling. This is why the scenario describes a slow change from liquid to gas.

Condensation is the reverse (gas to liquid), freezing is liquid to solid, and sublimation is solid to gas, so they don’t match the described change. An everyday example is a puddle slowly disappearing on a warm day as water molecules escape into the air.