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Tales from the Prep Room: Liquid Oxygen
This video, from the Royal Institution, shows how liquid oxygen is made using an oxygen gas cylinder and liquid nitrogen to condense it to a liquid. Pouring liquid oxygen between the poles of a magnet demonstrates how the unpaired electrons within the material have a residual dipole and can act as a weak magnet. This called paramagnetism. At the end of the video we can see the oxygen relighting a glowing splint.
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