Answer:
B. Unlike gases, vapour can easily be condensed into liquids
Step-by-step explanation:
A gas is a state of matter in which the substance has no definite shape or volume and can expand to fill the entire space available to it. A vapor, on the other hand, is a gas that is usually produced by the evaporation or boiling of a liquid or solid substance.
The main difference between gases and vapours is that vapours can be easily condensed into liquids by cooling or increasing pressure, whereas gases typically require extreme conditions of temperature and pressure to be condensed. For example, water vapour can easily be condensed into liquid water by cooling the surrounding air, while gases such as nitrogen and oxygen require extremely low temperatures and high pressures to be condensed into liquids.