Question

The change of water into vapour (vaporisation) is a:

• A. physical and reversible change
• B. chemical and reversible change
• C. physical and irreversible change
• D. irreversible change

Answer 1

The correct option is A physical and reversible change

Vapour is another physical state of water. Liquid water can be obtained from the condensation of vapour. Also, the vapour is chemically still water($H_{2}O$) as its chemical composition doesn't change.
Hence, the vaporisation of water is a physical and reversible change.