Chemistry students at Carleton College are having fun with liquid nitrogen!
Click on image for full size
Image from the Carleton College Chemistry Department
As shown in this picture, the element Nitrogen, when kept very cold, is a liquid. In this picture the liquid can be seen evaporating (changing phase
from a liquid to a gas).
If conditions are just right, the element Hydrogen, which is normally a gas, becomes a liquid, just as Nitrogen does if the temperature is just right.
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