Question

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

(a) Water into water vapour.

Answer 1

• A change which can be reversed or can get back to its original state is called a reversible change.
• Yes, water vapours can be reversed back to water by the condensation process.
• The transformation of vapours into liquid state is called condensation.
• When water is heated, it converts into water vapours, which then condenses back into water.
• Hence, this change can be reversed by the process of condensation.