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Liquid N2 Description Various objects are immersed in liquid nitrogen. A balloon shrinks to almost nothing, a banana freezes hard enough to be used as a hammer to drive a nail into wood, a racquetball shatters, and flowers crumble into dust. Explanation Liquid nitrogen is very cold! In its liquid state it is at its boiling point of 77.4 Kelvin, or 320 degrees below zero Fahrenheit! When a balloon is immersed in liquid nitrogen, the cooling of the air inside it causes it to contract to a volume of almost nothing, and the balloon shrinks. A banana freezes so hard it can be used to drive a nail into a piece of wood. A frozen racquetball shatters like glass, and flowers crumble into dust.
still have questions? email us! explanation furnished by UCCS's Dr. David Anderson
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