Monday, September 3, 2007

DID YOU KNOW!!! COKE AND MENTOS CAUSES *BOOM*

Email rumor claims two boys in Brazil died after eating Mentos and drinking Coca-Cola at the same time.

A Mentos eruption (also known as a Mentos and Diet Coke geyser, soda geyser or just Diet Coke and Mentos) is a reaction between Mentos candy and cola Th experiment involves dropping several Mentos candies (usually 5–8) into a bottle of diet Cola resulting in an eruption occurring because of rapidly expanding carbon dioxide bubbles on the surface of the Mentos. Producing the reaction has become a popular science experiment and an internet phenomenon, with videos of Mentos eruptions and even Mentos performance art pieces being posted on sites like Google Video and YouTube.
The experiment can be done in reverse, forming a Mentos rocket. Typically a two liter bottle is used, with the cap replaced after dropping several Mentos in. The bottle is then shaken up and thrown on the ground, cap-down. If the bottle hits the ground hard enough to let the pressure break the cap off, the bottle will launch like a rocket.
Anyone attempting to put the cap back on to a bottle after the Mentos has been added should be very careful. The amount of pressure created by this reaction is enough to rupture the sides of the bottle, creating an explosion rather than an eruption or rocket.

One way to improve height of a Mentos reaction with Diet Coke is by freezing the Mentos. Gum arabic, like water, expands when it freezes, which allows the reaction to happen at a quicker rate, because the Mentos become more porous. Rock salt can also be used to produce a reaction of great height, because of the ions in the salt. A nozzle on the bottle is also effective for increasing the height of the reaction. When using Mentos, the Mint kind is the best choice, because they have a matte finish (better for reaction), whereas the finish on the fruit Mentos is a gloss finish.

Well, there you go. Think twice before you pop some mint while drinking cola.

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