Why docoke bubble up when u put mentos in it?!
Why docoke bubble up when u put mentos in it?
Answers:
Simple.
Nucleation.
Little "craters" in the Mentos are places for Carbon Dioxide Bubbles to form. This happens many times, making it fizz.
Also: Some ingredients in the Coke and Mentos cause the explosion.
First popularized by Steve Spangler, a Mentos expedites a rapid release of carbon dioxide when dropped into a carbonated liquid because of its high surface area. Also, the small dents in the surface of the candy provide a great site for nucleation, which is how the carbon dioxide molecules can escape so rapidly. The escaping bubbles quickly turn into a raging foam, and the pressure can build dramatically in a restricted container such as a two-litre bottle. As explained on an episode of MythBusters, diet sodas (particularly colas due to their visible brown color) are most commonly used for the experiment. People are often under the illusion that aspartame causes the reaction, but this is not so. Diet sodas are preferred because they do not contain large amounts of sugar like regular colas. Sugar molecules help keep the carbon dioxide in solution, slowing the reaction. Artificial sweeteners in diet colas are much sweeter per molecule, and so make up a smaller proportion of the solution and allow a faster reaction. The resulting geyser (popularly known as a mentos eruption) can shoot as high as 6 metres (20 feet). The record reached in the hit show MythBusters was over 29 feet with the use of a nozzle.
I saw this on mythbusters. It only works with mint mentos and with diet soda (it works better with diet). It's basically a nuclei reaction.