WAEC - Chemistry (2018 - No. 26)
Which of the following statements best explains the difference between a gas and a vapour?
Unlike gases, vapours are liquids at room temperature
Unlike gases, vapour can easily be condensed into liquids
Unlike gases, vapour is readily converted into solids
Vapours are generally denser than gases
Explication
Vapour is the equilibrium state between the gases and liquid, and it can bounce back to its original form, liquid with constant temperature and pressure exerted on it.