Multiple choice At what temperature does water evaporate the most rapidly? 10ºC 10ºC 40ºC 100ºC 0ºC Reveal answer Fill a bubble to check yourself D Correct answer Explanation Water boils when it reaches its boiling point of 100ºC. This is the temperature at which water turns to steam or water vapour. Steam is an invisible gas. At this temperature, water evaporates very fast.