At atmospheric pressure, liquid nitrogen boils at -196 C. Contact of liquid nitrogen or cold gas with the skin or eyes may cause serious freezing (frostbite) injury. Liquid nitrogen is capable of freezing large objects in seconds, its boiling point is almost minus 196 degrees! Experiments Explosions liquid nitrogen Science ... a sealed container and then leaving them around at room temperature will lead to an explosion. How Does It Work. Not all flowers are the same, though. Many know that liquid nitrogen is extremely cold, at -321ºF. The demo team down at the Arizona Science Center shared their version of the liquid nitrogen explosion by covering the soda bottle with a trash can. Nitrogen (N 2) gas makes up about 79% of the air we breathe so it’s a part of your everyday breathing experience.On the other hand, liquid nitrogen (LN 2) is not.Normally, gasses like to fill spaces and spread out into all the tiny spaces available. But as this big-bang video shows, sometimes it's more fun to watch when things don't go quite as planned--you can see the LN2 explode right in the guy's hand. As far as science experiments go, the one with mixing nitrogen in hot water is the most spectacular. One of the first things people use to demonstrate the extreme cold of liquid nitrogen is freezing a flower. LN2 (liquid nitrogen) experiments are safest when the experimenters know what they're doing. It obviously gives you a very reliable "eruption" with a big plume of mist blasted upward, a dense cloud, and a very satisfying explosion noise. Safety precautions were taken in the filming of this video. ... (19 L) of warm water, a water bottle, liquid nitrogen, and some fun exploding material (like packing peanuts or ping pong balls). The explosion is the biggest I’ve seen (outside of some military training!). This liquid takes up only about a 600th of the original volume of the gas you started with. How to Make an Explosion. Our good friends down at the Oklahoma Science Center do this demo as part of their Science LIVE show and it’s great. You've seen it dozens of times in the movies, now try to experiment with it by yourself! When it is exposed to extreme temperature differences, you can observe something called the Leidenfrost Effect. There are two important properties of liquid nitrogen that present potential hazards: 1) It is extremely cold. This experiment uses liquid nitrogen which is EXTREMELY cold. To call it an experiment would be incorrect (you are doing a demonstration!) This is a real "cosmic" substance that can surprise not only children, but adults. Now this isn't something you'll likely try yourself, but you'll learn something, and hey, that's pretty cool. 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