When liquid nitrogen is placed in a sealed container, the pressure of the container increases until the container explodes. The energy released in the explosion can be used to launch a bucket high into the air. Analyzing the experiment using the ideal gas law gives results that are inconsistent with observations. Use of the van der Waals equation yields reasonable results.
Tom Kuntzleman's blog
Congratulations to Grazyna Zreda who solved the Chemical Mystery of the Mentos candies! To conduct this trick, two white Mentos candies are placed in separate beakers that both contain universal indicator. One of the Mentos candies turns the indicator slightly green, indicating the presence of base.
I previously wrote about an experiment published in the Journal of Chemical Education called “Hydroglyphics”1. In thi
One day during class I presented the disappearing rainbow demonstration and explained the chemistry behind it. After doing so, I had a student ask me if a particular bartending trick called “rainbow shots” was done in a manner similar to the way the disappearing rainbow demonstration is performed.
Last year I wrote about a very simple experiment can be done using water, a plate and M&M’s candies. The experiment can be seen in the video below: