What happens when you drink coke and eat mentos?

In this brief article, we are going to answer the question, “What happens when you drink coke and eat mentos?”

What happens when you drink coke and eat mentos?

You’ll have a massive rise of soda foam then probably burp and otherwise vomit up a lot of the things in a hurry.

There needs to be a way for the gas to get out of your stomach if it suddenly expands.

If you drink a can of Coke and then chew on a pack of Mentos, the carbon dioxide in the soda will be released in a massive burst of bubbles as it tries to escape your stomach.

Your stomach isn’t a good enough seal to prevent the sudden pressure change from escaping.

Snacking on Mentos while chugging soda might be risky if this is the case.

But as things stand, the worst that can happen if you mix Coke and Mentos is a little stomach ache and maybe some embarrassing vomiting.

Many urban legends tell of people’s deaths by an explosive buildup of carbon dioxide in the stomach, but no such deaths have ever been documented on film.

It’s likely that these tales have been embellished and circulated online for amusement’s sake.

Explosive reactions between Coke and Mentos can only be comprehended by first learning about the properties of both substances.

Coca-Cola has carbon dioxide dissolved in it, making it a carbonated drink.

The carbon dioxide in the cola forms chemical bonds with water molecules. Coca-Cola has been kept carbonated by being stored in bottles with caps that prevent the carbonated gas from escaping until the bottle is opened.

This explains why soda loses its own carbonation over time once it has been opened.

Almost all of the carbon dioxide in a glass of soda doesn’t escape because the surface tension of the water (or liquid) keeps it submerged. There is some bubble formation, which allows a few of the gas to escape, but this is not nearly enough.

The physical characteristics of Mentos are responsible for the outcome of the procedure. Breaking the bonds with the aquatic environment in the soda allows for the creation of more carbon dioxide bubbles.

Mentos, despite its apparent smoothness, is actually covered in thousands of tiny bumps.

The rough candy surface generates enough friction to dislodge the thicker carbon dioxide molecules from the surrounding water. When the carbon dioxide is released, it forms tiny bubbles that really are lighter than water as well as rise to the surface.

You can visualize the famous fountain of soda bubbles coming from the bottle by multiplying this small process by thousands of times per second. Adding more Mentos candies to the provided soda bottle will increase this effect, up to a certain point, after which the geyser will not get any bigger.

How come Mentos reacts with soda?

The effectiveness of this reaction is due to the surface of the Mentos candies.

Because of the millions of microscopic pores covering a Mentos’ surface, the polar connections between both the carbon dioxide and water are broken, allowing for a reaction to take place.

The carbon dioxide molecules attach to the surface of the mentos and create bubbles. A lot of mentos in a soda will cause all this bubbles to aggregate and release carbon dioxide in a big woosh! 

The Mentos would then proceed to pave the way for carbon dioxide bubble formation till all the surrounding CO2 in the bottle has been used up.

This doesn’t always result in a geyser shooting out of the coke bottle; for example, a Mentos candy cut into the quarters will have a smaller response than a full candy.

However, this is an ongoing process with exponential growth.

To create the geyser, enough candies must be dropped into a bottle of Coke, causing the bubbles to pile up against one another as they escape the bottle. This reaction is aided to some extent by the ingredients in Mentos.

Gum Arabic as well as gelatin are typical ingredients in Mentos candies.

Both of these enhance the bubbling response and speed up the geyser by lowering the interfacial tension of the soda. When the surface tension is low, the bubbles can more easily rise to the top and try to escape.

In addition, if you drop the Mentos into  the soda bottle with enough force to cause it to descend rapidly, more carbon dioxide will be forced through its small pores, leading to a faster reaction in which more bubbles are being created in a shorter amount of time.

Non-agitated Mentos floating in the soda will produce a less intense reaction.

In theory, this could be accomplished with either candy that has sufficiently small pores, such as Mentos.


In this brief article, we answered the question, “What happens when you drink coke and eat mentos?”



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