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What sort of solid is frozen oxygen? For that matter, how do you classify elemental carbon, nitrogen, sulfur or phosphorus, other than the extremely broad category"non-metallic"? I don’t think it’s technically a salt or a ceramic, and with the exception of carbon I don’t think they’re covalent crystals.
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Will liquid oxygen and liquid methane dissolve in each other, or are they immiscible ? Methane is a hydrocarbon, but I don’t know how liquid oxygen should be classified (see #1.)
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My Encyclopedia Britannica claims that oxygen is attracted by magnets “in all it’s phases”. Huh? I thought no true liquid could be attracted by a magnet. I remember seeing a photo showing a lump of solid oxygen on a string being pulled by a magnet; but I thought most paramagnetic substances had a very weak response compared to iron. Can someone give me the hard numbers for oxygen?