1. Mentos Coke Experiment
Brylee Lutman
Daniel Volk
Liam Eades

2. Hypothesis
Different types of Mentos affect the size of the soda reaction.

3. Materials Regular Mentos Fruit Mentos Sugar-free Mentos
2 liters of Coke
Graduated cylinder
Yard stick
iPhone 6
37g of Mentos/ 300mL of Coke

4. Procedure Fill graduated cylinder with 300 ml of regular Coke.
Place one pack of Mentos in the graduated cylinder.
Using a meter stick, record the height of the reaction caused by the Mentos in Coke.
Make observations on the reaction.
Empty graduated cylinder, repeat experiment with both fruit- flavored Mentos and then with sugar-free Mentos.

5. Trial #1: Regular Mentos
Observations
No reaction

6. Trial #2: Fruit-flavored Mentos
Observations
No reaction

7. Trail #3: Sugar-free Mentos
Observation
Small reaction
Bubbled
Reaction caused fill line to raise slightly.

8. Possible Errors Loss of carbonation in transfer from bottle
Contaminated cylinder
Dropped Mentos
Stale Mentos
Stale Coke
The Coke was the wrong temperature
*Data was not taken accurately enough. We were not able to record actual mL risen by the reacting Coke per each experiment.

9. Conclusion
This experiment failed because of a loss of carbonation when the Coke was poured into the graduated cylinder, causing a lack of a reaction. We know this because of the “fizzing” reaction that occurred when it was poured, which caused a loss of carbonation.
To test one of our possible errors (loss of carbonation), we pored leftover coke into a funnel leading to a smaller bottle to preserve carbonation. It is did fizz and bubble more, therefore loss of carbonation was an confirmed as an issue.

10. Conclusion
The result of experiment was inconclusive. In order to confirm which Mentos affect the Coke the most, we would need to retry the experiment by putting Mentos in actual Coke bottles, rather than in graduated cylinders (although sugar-free can be inferred to produce the biggest reaction).