Liquid nitrogen is very interesting. It boils at -321°F which means it is very cold. But what happens when you conceal liquid nitrogen? When liquid nitrogen is concealed in a container like a water bottle it turns to a gas. When the gas has no where to go the bottle starts to expand. Eventually somewhere on the bottle something will give out and the bottle makes an explosion. Some have tested this theory out and thrown the "nitrogen bomb" in a pool of water to see the explosion. A scientist named Dr. Roy Lowry of Plymouth University decided he was going to do this experiment for his class but the concealed nitrogen in a trash can and then put 1,500 ping pong balls on top of it. There is a link to the video below that shows you the effects of this experiment. As I said earlier eventually after a while there is an explosion. The explosion sends the ping pong balls up into the air scattering them around the room. I personally think that liquid nitrogen is very fascinating. When doing experiments with it you never really will know the outcome. You just have to wait and see what it does.
The article where I found this just explains about why this happened and how they preformed the experiment. Some things about the article and the experiment all together that are hard to understand is why the liquid nitrogen when concealed forms into a gas and expands the container that it is in. The article just states who the doctor was that preformed the experiment and how cool it was to see the thing explode. Other than the fact of there was little facts about liquid nitrogen I thought that the article was very well written.
YouTube video about liquid nitrogen
http://m.youtube.com/watch?v=6bpjN5wHRNQ
Articles
"Why Not To Keep Your Liquid Nitrogen In A Sealed Container." Popular Science. N.p., n.d. Web. 28 Jan. 2013.
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http://www.popsci.com/science/article/2012-09/why-not-keep-your-liquid-nitrogen-sealed-container
"Sealed-up Liquid Nitrogen Creates Ping Pong Explosion." 80beats. N.p., n.d. Web. 28 Jan. 2013.
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http://blogs.discovermagazine.com/80beats/?p=40150#.UQa6GWt5mK0
