Soda and mentos

Stand back and watch the geyser spray!

Why Do Diet Coke and Mentos React?

What about the candy? Scientifically speaking each little dimple on the Mentos is called a nucleation site impress your science teacher with that one where the carbon dioxide from the soda can attach and escape the liquid solution the soda.

Soda and mentos soda is filled with carbon dioxide. Under these conditions, carbon dioxide begins to precipitate from solution, forming gas bubbles.

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When the pressure is released from a soda bottle, the bubbles tend to form on the sides of the bottle. This is not the case either. In non-science speak, this porous surface creates a lot of bubble growth sites, allowing the carbon dioxide bubbles to rapidly form on the surface of the Mentos.

The reaction is so intense, you can make a rocket propelled by the resulting geyser. The addition of other nucleation sites provides an alternative pathway for the reaction to occur with lower activation energy, much like a catalyst.

Diet Coke and Mentos eruption

Is the geyser taller? The faster it sinks, the faster the reaction can happen, and a faster reaction creates a bigger geyser; a slower reaction may release the same amount of foam overall, but will also create a much smaller geyser. Gasses, in general, are more soluble in liquids at elevated pressures.

When you open a bottle of soda, depending on whether you shook it up beforehand, the bubbles stay in the solution because the surface tension of the liquid traps it in. Size Matters Another factor that contributes to the size of the geyser is how rapidly the object causing the foaming sinks in the soda.

The conversion of dissolved carbon dioxide to gaseous carbon dioxide forms rapidly expanding gas bubbles in the soda, which pushes the beverage contents out of the container. Have you ever really seen the surface of a Mentos? It is highest Soda and mentos bubbles that form in the liquid itself homogeneous nucleationand lower if the bubble forms on some other surface heterogeneous nucleation.

This is because the gases want to escape the liquid, so when you drop the Mentos in, the reaction happens faster. All these little dimples provide a place for the carbon dioxide in the soda to latch on and undergo a physical reaction. For instance dropping grains of salt or sand into the solution lowers the activation energy, and increases the rate of carbon dioxide precipitation.

Normally, this process is relatively slow, because the activation energy for this process is high. In addition to that, the gum arabic and gelatin ingredients of the Mentos, combined with the potassium benzoate, sugar or potentially aspartame in diet sodas, also help in this process. The buoyancy of the bubbles and their growth will eventually cause the bubbles to leave the nucleation site and rise to the surface of the soda.

Each Mentos candy has thousands of small pores on its surface which disrupt the polar attractions between water molecules, creating thousands of ideal nucleation sites for the gas molecules to congregate.

Well, what about trying different types of soda? The candies are fairly dense objects and tend to sink rapidly in the soda. This reaction, the Mentos and Diet Coke reaction is a physical reaction, where all the pieces of the reaction remain but are simply rearranged. In JuneDr.Combine Diet Coke and Mentos, and the result is explosive—Diet Coke shoots out of the bottle like a miniature, sticky Old Faithful.

The reaction is so intense, you can make a rocket propelled by. A roll or box of Mentos chewy mints (stick with the standard mint flavor for now) 2-liter bottle of diet soda (either diet or regular soda will work for this experiment, but diet soda is not sticky when you’re cleaning it up, and it will usually create a bigger blast) Sheet of paper to roll into a.

This reaction, the Mentos and Diet Coke reaction is a physical reaction, where all the pieces of the reaction remain but are simply rearranged. The Soda: The soda is filled with carbon dioxide. Drop some Mentos sweets into a bottle of Diet Coke and a geyser-like fountain will whoosh into the air – at last, there's a scientific explanation.

Why do Diet Coke & Mentos and Coke Zero & Mentos create such exciting geysers? It’s mostly due to a process called nucleation, where the carbon dioxide in the soda is attracted to the Mentos .

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Soda and mentos
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