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liquid nitrogen

chemistry

Learn about this topic in these articles:

freezing of foods

  • autoxidation
    In food preservation: Industrial freezers

    …moved through a spray of liquid nitrogen or directly immersed in liquid nitrogen. The liquid nitrogen boils around the food at a temperature of −196 °C (−321 °F) and extracts a large amount of heat.

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use of cryonics

  • preparation for cryonic preservation
    In cryonics

    …in a chamber filled with liquid nitrogen, where it will theoretically stay preserved at -196 °C until scientists are able to find a way to resuscitate the body in the future.

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van der Waals force

  • Figure 1: The four stable geometric structures of the seven-atom cluster of argon, in order of increasing energy: (A) A pentagonal bipyramid. (B) A regular octahedron with one face capped by the seventh atom. (C) A regular tetrahedron with three of its faces capped by other atoms. (D) A trigonal bipyramid with two of its faces capped by other atoms; although this has the highest energy of the four structures, it is very close in energy to the tricapped tetrahedron.
    In cluster

    …such as liquid air or liquid nitrogen, are made up of molecules whose properties differ only slightly from the properties of the same molecules in gaseous form; such solids or liquids are simply molecules packed tightly enough to be in constant contact. These are called van der Waals solids or…

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