Question

when water changes to a gas at temperatures below the boiling point, what is this called? evaporation condensation

Explanation:

Evaporation is the process where a liquid (like water) changes to gas (water vapor) at temperatures below its boiling point, occurring at the liquid's surface. Condensation is the reverse (gas to liquid). So the correct term for water changing to gas below boiling point is evaporation.

Answer:

Evaporation