Mentos Lab

In: Science

Submitted By pgurns
Words 1271
Pages 6
Introduction: The diet coke and Mentos experiment has been a favorite of amateur scientists, but how does it work? There have been debates, and scientists have concluded that the diet coke and Mentos is a physical reaction, called nucleation. Nucleation sites are areas that have high surface with low volume. Such places can be your fingerprint, scratches on glass, specks of dust, or even Mentos candy (Eepy Bird). Mentos candies have a pitted surface that’s rough when looked at through a microscope, therefore creating a wonderful place for nucleation to occur. Water molecules like to be next to other water molecules, so if you drop something into the soda, like Mentos, it acts as a site for growth of bubbles. Mentos have a high ratio of surface area to volume, so there’s more places for bubbles to go, creating the fountain of fizz (NewScientist). The goal of the experiment was to test different types of sodas and to see what type of soda reacted best with the Mentos to create the biggest fountain of fizz.
Materials:
• 2000 mL graduated cylinder • Mentos candy • Mentos candy dispenser • 2-Liter bottle of Mountain Dew
Procedure:
First, all of the materials were obtained. Five Mentos candies were dropped into the Mentos candy dispenser and the pin was put through the hole to secure the Mentos from falling out of the bottom of the dispenser. Then, the cap was unscrewed from the 2-Liter bottle of pop and the Mentos candy dispenser was screwed on. Next, the bottle of pop, and the Mentos dispenser filled with the Mentos attached to the bottle of pop, was taken outside and set on the sidewalk. The pin was pulled from the dispenser and the geyser of pop erupted. After the eruption, the dispenser was unscrewed from the bottle of pop and the cap was screwed back on to secure all of the leftover liquid. The bottle of pop was taken back to…...

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