Does Soda Temperature Affect the Height of a Mentos Geyser?

Overview

Objectives/Goals My objective was to determine if Mentos mint candies would react differently in different temperatures of soda. I believe that the heated soda will shoot a higher geyser than either the room-temperature soda or the refrigerated soda, because the molecules in the heated soda will become more active and create more pressure. Methods/Materials Nine rolls of Mentos mint candies, 9 2-liter bottles of Diet Coke, 1 Mentos Geyser Tube, a digital meat thermometer, a heating pad, a tape measure, blue painter#s tape, and a black and red marker to mark 6-inch and 1-foot intervals were used in this experiment. A camera, a camcorder, a pencil, and paper were used to record data from the experiment. Three bottles of Diet Coke were refrigerated, three bottles were heated with a heating pad, and three bottles were left at room temperature. Eleven Mentos were dropped into each of the bottles, and the heights of each geyser created were recorded. Results The three refrigerated bottles of Diet Coke consistently produced the shortest geysers of the nine bottles tested, while the heated bottles of Diet Coke consistently produced the highest geysers of all trials. Conclusions/Discussion My conclusion is that the temperature of the soda does have a major affect on the height of a Mentos geyser, with heat creating more energy to produce a higher geyser.

Competition history

• CSEF 2011 Chemistry · Entry J0613

Resources

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