Nitrogen, it's some pretty cool stuff. With an atomic number of 7, this element is most commonly seen in gaseous form. Why? It has a boiling point of -196 °C. It boils at -196 degree, that's a really cold boiling point. Liquid nitrogen is probably the form more people are familiar with. It's one of the coldest things we have access to and is crucial to many of our experiments. Nitrogen ice is just getting into the "ridiculously cold" range. As the nitrogen is exposed t the vacuum, it's boiling point decreases. It starts to boil more quickly which in turn cools the remaining nitrogen due to the evaporation (a process similar to the way sweating keeps us cool on a hot day, as described by ScienceAlert). This cooling causes the other nitrogen to form a solid, which is really cool by itself (nitrogen ice is insanely cold). As it melts, the ice creates a nitrogen snow , and the cool meter starts to break. You can watch this entire mesmerizing process below.  https://www.youtube.com/watch?v=c0rK2bLTimQ


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