What's more fun than exploding coke?! This tried and true experiment illustrates the chemical reaction of the C02 in diet coke when mixed with the dimpled surface of mentos candies. My little scientists came up with a hypothesis - will the explosion be greater, when more mentos are added to the diet coke? They created the experiment, and wrote up a lab report for it. We discussed the scientific method of proving hypotheses, setting up experiments, and drawing conclusions.