Why does coca cola explode when Mentos are dropped into it?

Answer 1

Basically, you are witnessing the Surface Effect. Carbon Dioxide forms bubbles. Diet Coke has more carbon dioxide than other regular sodas. The surface of the "mento" is jagged and filled with nooks and crannies. The Carbon Dioxide finds all of these holes and fills them with bubbles. Since the Mentos are heavy, they drop to the bottom of the bottle, forming bubbles all the way down. This is what causes the fast and furious explosion out of the top of the Diet Coke bottle.

Answer 2

when the Mentos hits the surface of the coke, the compressed carbon dioxide forms bubble on the surface of the Mentos. and it is released into the air and pushes the coke out with it. the Mentos can be mint or fruit (I have tested both)

Answer 3

There are several reasons, but the physics community has settled on nucleation as the reason.

The reason that the soda erupts so violently from the bottle is actually twofold: a decrease of the surface tension of the soda (due to dissolving Mentos), and an increase in nucleation sites (sites where bubbles of CO2 can form) within the bottle (due to the rough Mentos surface). Both of these factors make the carbon dioxide in the soda less likely to stay dissolved and more likely to become gaseous. The fountain effect is from all of the CO2 going from dissolved to gaseous at once, and at a great rate.

Read more: Why_does_coke_explode_with_mentos

Answer 4

its the gas in the Pepsi that makes it explode.

Answer 5

the mentos cause a chemical reaction with the coke causing it to explode .

Mentos cause the carbon dioxide to come out of the cola creating pressure inside the bottle :)