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
The correct answer is: B
Explanation
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.