When water gains heat and boils the water evaporates into hot water vapour?

Answer 1

Water can exist in three states:

Solid, known as ice

Liquid, known as water, and

Gas, known as steam or water vapour.

By the way, what we see as steam is in fact tiny droplets of water. Water vapour is transparent and colourless.

Answer 2

When water gains heat and reaches its boiling point, it changes phase from liquid to gas through a process called evaporation. The hot water vapour is actually water in its gaseous state, and it rises due to its lower density compared to air.