The Soda Geyser Challenge
- Supplies Needed: 2-Liter Soda Bottle, Mentos, Goggles, Video Camera
It is always a crowd favorite to make a mini-explosion happen. Before you freak out, we’re not creating a real explosion at all. Rather, we’re making a relatively safe one. That said though, if you have kids involved in this, you’ll need goggles for each one to have over their eyes. This is mostly to protect their eyes from soda getting in them. In this game, you’re teaching them a little about chemistry.
Mentos mints happen to interact with most soda. This is due to what the two are made of. As mentos fall to the bottom of coke or other soda, they create carbon dioxide bubbles that continue to build. The rising bubbles then react with the CO2 still dissolved in the soda. This causes even more CO2 to be freed, making more bubbles, thus creating the eruption. The game is simple. Get two 2-liter bottles, put Mentos in both, and see which one goes the highest. Your video camera will help there.