# Diet Coke and Mentos Science Project

Topics: Energy, Coca-Cola, Kinetic energy Pages: 3 (620 words) Published: December 4, 2013
﻿Diet Coke & Mentos
by Keeley Tillotson, Anna Cincera and Stefanie Doughty

Top | Purpose:
The purpose of this experiment is to find out the relationship between the height of the spray of Diet Coke and the number of Mentos added.
Top | Hypothesis:
We believe that after a certain number of Mentos added, the spray height will cease to increase and will plateau at which point the amount of kinetic energy will also reach its peak. We believe that this will happen because at some point the addition of the Mentos will become inconsequential as there is not an unlimited amount of CO2 in the Diet Coke. The number of Mentos is the X variable and the height of the spray (defined by the distance in inches the Coke spout reaches above the bottle) is the Y variable. Kinetic Energy is defined as the energy of the spray’s upward motion.

Top | Method:
A meter stick was suspended directly above the rim of a 2 liter Diet Coke bottle. This was so we could measure the spray (in inches) once the Mentos were dropped into the soda. We constructed a paper funnel to drop the Mentos into, in order to make sure all the drops were uniform and that all the Mentos went in. We dropped the Mentos into the cola and, while filming the reaction, measure the spray height, using the meter stick. We started with 2 mentos, and then increased it to 4, 5, 6, 7, 8, 9, 10, 11, 12 and 13.

Top | Set Up:

Top | Results:

Data File (.txt)
Data File (.xls)
Uncertainty: Approximately +/- .5 inches, due to human error. It proved difficult to name an exact measurement, so almost all measurements were estimated within .5 inches.
Top | Discussion:
In conclusion, our hypothesis was supported. The height of...