Question

1.Can we reverse the following change? If yes, suggest the name of the method.

(b) Water vapour into water

Answer 1

• A change which can be reversed or can get back to its original state is called a reversible change.
• Yes, water can be reversed back to water vapour by the evaporation process.
• The process through which a liquid converts into its vapours is called evaporation.
• When water vapours are cooled down, they are converted into water, which when heated get converted again into water vapours.
• Hence, this can be reversed by the process of evaporation.