Conducting experiments with liquid nitrogen experiments is a sure-fire way to energize many chemistry lessons. Unfortunately, getting access to liquid nitrogen can be a bit difficult. I happen to purchase liquid nitrogen from Airgas; you might be able to find a branch near you here.
In the video below, you can see a particular experiment I perform for my students when discussing the gas laws. I like to call this experiment “The Misbehaving Balloon”.
How do you think this experiment works? Also, do you have any experiments you enjoy doing with liquid nitrogen? Let me know your thoughts!