4. Open the pack of Mentos and place all of them in the tube. 1. Slowly and carefully open a new bottle of Diet Coke. 2. Place it on a flat area outside where it is OK to get wet with soda. 3. Put the ...

Use index card to hold the contents of the tube in place. Open one bottle of diet soda and set it on a flat surface. Put the open end of your tube of Mentos on the index card and place it directly ...