Why do salts remain behind during evaporation of salty seawater?

Correct answer: Because mainly water molecules enter the gas form during evaporation

Correct answer: A. Seawater is a solution containing water and dissolved salts. During ordinary evaporation, the faster-moving water molecules escape from the liquid surface and become water vapour. The dissolved salt ions do not normally enter the vapour with the water; they remain in the container or sea, so the remaining liquid becomes more concentrated. If evaporation continues completely, salt crystals may be left behind. A is correct because it describes selective transfer of water molecules. B is wrong because salts do not normally form clouds. C is wrong because seawater does contain dissolved salts. D is wrong because evaporation is a physical change and does not convert salt into oxygen. Memory cue: evaporation removes water, not dissolved salt.