It was close to the end of the semester and we were covering gas laws. Students were stressed over the idea of finals, final projects due, tests before finals and the holidays. Since we were finishing up the topic and it was important to end with one last assessment and/or lab but the timing was not good and the stress level for everyone was at an all time high. A different course of action was needed.
The solution to Chemical Mystery #9: Liquid Nitrogen vs. Dry Ice is presented. Why does liquid nitrogen launch the bucket so much higher than dry ice and water?
A 2L soda pop bottle is filled about one-third full with either liquid nitrogen or solid carbon dioxide (dry ice) and water. The bottle is sealed and a plastic bucket is placed on top. Do you think the liquid nitrogen or dry ice and water will make the bucket go higher? Can you explain the results using chemistry?
It all started with a class my son and I took together at Marc Adams School of Woodworking (link is external). To make a long story short, we started on a Saturday morning with nothing and left Sunday afternoon with a custom built longboard. (Think skateboard but...well...longer).
Solution to Chemical Mystery #6 is presented. Also, concepts related to the chemical can crush demo are briefly discussed.
The extent of my involvement with football is to check scores to see who won the Super Bowl and to watch an online recap of the best commercials that aired during the game. Nonetheless, I was excited to read, appropriately enough, on Super Bowl Sunday, a football-focused activity in the February 2016 issue of the Journal of Chemical Education.
Check out the solution to Chemical Mystery #4: The Case of the Misbehaving Balloon!
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.
The “bucket launch” is a fantastic experiment you can do if you have access to liquid nitrogen. Depending upon conditions, we have observed the bucket to launch anywhere from 80 to 160 feet high. See the video.