Question

Suppose you want to convert a gas into a liquid. Which two methods can you apply?

Answer 1

(i) By increasing the pressure or by compressing the gas. (Increase in pressure allows the gas molecules to come closer and hence liquifies).

(ii) By lowering the temperature or by cooling the gas. (Lowering in temperature turns down the kinetic energy of the gas molecules which allows the molecules to come closer and hence liquifies).