Question

What happens to water

as it evaporates?

A. Atoms are added
B. It becomes less dense water
vapor
C. New substance is formed
D. Atoms are destroyed.

Answer 1

Water can only evaporate when it is heated. When water is under heat, the water molecules vibrate and move around so quickly that the molecules escape into the atmosphere. The molecules become less and less dense as they float into the air.