Oxygen is mostly seen in the form O2. This is type of oxygen that we breathe. Oxygen is also present on the form O3 or ozone. Similar to nitrogen, oxygen, as a liquid is extremely cold. In fact, if you drank liquid oxygen, your insides would probably freeze. Liquid oxygen is usually made by mistake. Because it is extremely reactive, in an uncontrolled environment it could result in an explosive reaction. This is the reason no one makes it on purpose. Another great thing about oxygen is, that if you have a splint and you light it on fire, then put it out, the top will glow. But, when you put it in pure oxygen, the splint will light up again.
Great information! You explained the experiment well and illustrated all the interesting points about oxygen. :)
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