How to Make A Mentos and Diet Soda Volcano Fountain

Here's how to make Diet Coke erupt in a high fountain by adding Mentos to the bottle.

Difficulty: Easy

Instructions

Things You'll Need:

• 2 Liter Bottles of Diet Coke
• One Stick of Mentos For Every Bottle You Wish To Erupt

1. Go Outside:
   
   Take the Mentos and Diet Coke outside to your lawn or driveway. Set up a card table and place the Diet Coke on it so the bottle(s) won't tip over during the experiment.

2. Put The Mentos In The Bottle:
   
   Unwrap the entire stick of mentos. Then unscrew the cap off the Diet Coke. Grasping the mentos like a stack of poker chip, jam the entire stick of Mentos into the opening of the bottle as quickly as possible.

3. Run Away:
   
   Get as far away from the fountain as you can in the few seconds before it erupts. Otherwise you'll get soaked by Diet Coke. Make sure all spectators are standing twenty feet back before the experiment begins.

4. Repeat The Performance:
   
   You can make another soda volcano, or get creative with a partner and do two fountains at once. If you have rain gear on, you can stand under the spray and launch one fountain while others are still spraying, as seen on the popular YouTube video.