Compléter Evaporation/CondensationVersion en ligne Evaporation/Condensation par Wally Mason 1 condenses cold evaporation cooler equa slow energy liquid condensation 1 . When a cup filled with water is exposed to air , the water in the air onto the side of the cup . 2 . The fast - moving molecules of water vapor transfer their to the side of the cup which is . This causes the water vapor molecules to down . When they slow down enough , their attractions overcome their speed and they stay together as water . 3 . Water molecules break away the surface of the water which is called and also rejoin the water which is called In a closed jar or terrarium , the rate of evaporation and condensation would eventually become