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Almost al gasses can change to liquids bij cooling or putting it under preasure.

Yes gas can change into liquid and liquid can change into gas. A gas is a substance that has no definite volume or independent shape that that tends to expand indefinitely. Gases are compressible. A liquid is a substance that flows freely and has a definite volume but has no independent shape. Liquids are slightly compressible. Change of state is the process that occurs when enough heat is added or removed to change a substance from one physical state to another.
Sure, it's called condensation. It'll happen if you cool the gas.

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8y ago

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