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There are several reasons postulated, 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.

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13y ago
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TANNER JULKOWSKI

Lvl 1
11mo ago
Dude that blow my mine
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Wiki User

11y ago

Because of the acid in coke

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Q: Why does coke explode with mentoes?
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