To make a volcano erupt without baking soda, combine diet soda and Mentos candies. With the right supplies and a bit of creativity, this science project can be a blast for everyone involved.Continue Reading
If desired, construct the cone of the volcano by mixing together 6 cups of flour, 2 cups of salt and 4 tablespoons of cooking oil with 2 cups of warm water. Place a soda bottle on a baking pan and pour the mixture over it, molding it as necessary to form the volcano shape. Do not cover the opening of the bottle.
Pour soda into the bottle until it is mostly full. When ready for the explosion, drop in a pack of Mentos candies and the volcano will erupt.