Question

What is difference between gas and a vapour?

Answer 1

Gas is a form of air or we can say that gas is made by some physical process of air.
Whereas, vapour is a fom of water or we can say that vapour is made by some physical process by water

Answer 2

gas is a state of matter. vapour is a state of equilibrium between gas and a liquid, it can easily be converted into liquid by applying pressure and without changing room temperature..

A gas refers to a substance that has a single defined thermodynamic state at room temperature whereas a vapor refers to a substance that is a mixture of two phases at room temperature...