It is called water vapour or simply vapour.
Water vapor
steam
steam
steam
water vapour
'When liquid water changes to an invisible gas it is called evaporation. The water is turned into water VAPOUR. You can remember this by remembering the word vapour in eVAPOURation.
Evaporate
evaporation
Evaporation
Evaporation
it is called evaporatin
they were water that turned into a gas by evaporation cauzed by the heat of the sun.