Eli5 – how can water be made of hydrogen and oxygen?

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Liquid water – made from two types of gas. Makes no sense to me, whatsoever. Water seems to be one of the strangest substances and we completely take it for granted that, apparently, it’s made of gas!

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Anonymous 0 Comments

It’s not really made of gas. It’s made of atoms. Heck, you’re 9.5% hydrogen by weight. 65% oxygen and 18.5% carbon and a bunch of other stuff.

Note that water is only liquid between 0 and 100 degrees C, or 32 and 212 F. Below that it’s solid, above that is gas. Hydrogen becomes liquid at -253 C, Oxygen is liquid at -183C. That’s because Hydrogen and Oxygen molecules (which are 2 atoms each) don’t tend to stick together unless they get really really cold. Water molecules on the other hand have some local polarity, so they’re more likely to bond at higher temperatures. Pretty much everything has a solid, liquid, and gas temperature.

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