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I believe that gas can't have a boiling point. The boiling point of a substance refers to the phase transition between pure liquid and pure gas. It depends on the pressure of the system, and the normal boiling point is taken at standard pressure, 101.3kPa (1 atm). All pure substances that occur in a liquid and a gas state have boiling points. Some ...


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In reality if a substance is in liquid phase , then not all intermolecular bonds are broken between molecules but some of them and this results in the creation of groups of molecules.In gases all intermolecular bonds are broken between molecules. The intramolecular bonds are not broken during a phase transition and that is why I posted my own answer instead ...


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Sheets are usually made by film blowing, or some other technique which involves uniaxial or biaxial stretching followed by rapid cooling. The cooling (and, usually, crystallisation) of the material is usually so fast that the polymer chains have no chance to relax from their elongated state. In the film or sheet, the chains are now frozen in in their ...


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The post that was linked to you in comments contains a nice, short description of the 'traditional' categories of van der Waals interactions. I suggest you take a look at that, it might just be enough to clear things up. The reason I am writing this post is that the categories introduced there are defined somewhat arbitrary, so I'll try to introduce some ...


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