My family has a bit of a tradition of pulling out science toys for the holidays, which started with making Mentos and Diet Coke geysers for the Fourth of July several years ago. This Christmas, we made elephant toothpaste and made a trash can fly up into the air using liquid nitrogen. Check it out in the video below!
I hope you and your family are enjoying a wonderful (and safe!) holiday together!
I hit the streets again and did some elephant toothpaste demonstrations with passersby in front of a really cool mural near downtown Houston. Check out the video below!
Elephant toothpaste is getting to be a really popular science demo! It is a chemical reaction using hydrogen peroxide and a catalyst to increase the release of oxygen. The oxygen in caught in dish soap, creating the foam. I use potassium iodide as the catalyst and a really strong hydrogen peroxide for a really big effect, but those chemicals require careful handling. You can try the demonstration safely at home using the instructions below!
We celebrated Halloween doing some science with our next door neighbors down at the lake by our house. First, we filled our jack-o’-lantern with elephant toothpaste, and then we made it explode! We tried to do both of them at the same time but had a little bit of trouble. You can watch the video below!
Or check out some of the photos below! I hope you have a safe and fun Halloween!