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My book states, "Gases do not liquify on compression only, although molecules come close to each other and Weak forces operate at a maximum" Why:

Gases do not liquify on compression only, although molecules come close to each other and Weak forces operate at a maximum.

Why is it that we cannot just keep on compressing gas till it solidified or liquified? Why do we need to reduce its temperature? Also,if if that is true, what would happen if I kept compressing a gas, without siphoning out the excess energy?

My book states, "Gases do not liquify on compression only, although molecules come close to each other and Weak forces operate at a maximum" Why is it that we cannot just keep on compressing gas till it solidified or liquified? Why do we need to reduce its temperature? Also,if that is true, what would happen if I kept compressing a gas, without siphoning out the excess energy?

My book states:

Gases do not liquify on compression only, although molecules come close to each other and Weak forces operate at a maximum.

Why is it that we cannot just keep on compressing gas till it solidified or liquified? Why do we need to reduce its temperature? Also, if that is true, what would happen if I kept compressing a gas, without siphoning out the excess energy?

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Why do gases need to be cooled to liquefy/solidify?

My book states, "Gases do not liquify on compression only, although molecules come close to each other and Weak forces operate at a maximum" Why is it that we cannot just keep on compressing gas till it solidified or liquified? Why do we need to reduce its temperature? Also,if that is true, what would happen if I kept compressing a gas, without siphoning out the excess energy?