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Why does nitrogen freeze everything that it touches?
Answer 1:

N2 nitrogen is a gas at room temperature, but by cooling N2 it can be turned into liquid nitrogen at about 77 degrees Kelvin or -326 degrees Fahrenheit. The temperature right now is about 70 deg Fahrenheit.

Because 77 Kelvin is such a low temperature, most things freeze instantly when dropped into liquid N2. Read more here


Answer 2:

It doesn't. Nitrogen is the most common gas in Earth's atmosphere; about 80% of the air is nitrogen. If it froze everything it touches, then you would be dead, because it would freeze you.

You're probably thinking about liquid nitrogen. Nitrogen boils at a temperature of 77 Kelvin, or -196 Centigrades. Therefore, in order for nitrogen to be liquid, it must be below that temperature. Because water freezes at 273 K (0 C), anything with water in it will freeze in contact with liquid nitrogen.



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