Difference between a gas and a vapour ? represent by 3d video
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A vapour has undergone a phase change while a gas did not. For example, nitrogen is gas in room temperature, but water is liquid. When water is heated, it undergoes a phase change and water vapour forms.
Gas is a state of matter while vapour is not.
A gas is a substance above its critical temperature but below its critical pressure, while a vapor is a substance above its boiling point temperature.
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