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sick! this was cool!!

I still can’t believe people think this isn’t real? I guy from you golf club forwarded me address, http://www.Cokementos.com. I thought it was a hoax. So I snuck out of my boring government job at lunch at did it with a can of diet coke and 3 mentos, not as huge as the video clips, but I did get sprayed, and got razzed by my coworkers. Give it a try, just don’t stand to close

I did this with a 1.5 liter bottle of Diet Coke and some Watermelon Mentos. Absolutely nothing happened. Was it 1.5 liter vs. 2.0 liters, or Diet Coke vs. Diet Pepsi, or Watermelon Mentos vs. Mint Mentos that caused it to fail?

we put mentos in diet coke today at our science camp.It was awesome!!! I did it when i got home. But i got in trouble because i used my mama's diet coke.

wILL IT WORK WITH FLAT SODA?
NEED TO KNOW ASAP PLEASE oops sorry for the CAPS it was locked

BE CAREFUL WITH THIS EXPERIMENT!! I watched my friend drop a pack of Mentos into a bottle of Dr Pepper, quickly put the cap on and shake it. The bottle exploded in his hands and he had to be taken to the hospital. Tiny bits of plastic got in his eye and neck. If you do the experiment as shown on the video, then you should be ok but for goodness sakes don't try to cap the bottle once the mentos are in!

I have a feeling that it's either the Carbon dioxide in the softdrinks or the aspartame or whatever makes the diet beverage "diet". The one way to clear up the latter condition is to test it out on non diet softdrinks and see how the reaction goes. if it still happens then we know it has to do with the CO2 and how it reacts to whatever is in/comprises the mentos. If not then we know it's a particular chemical/family of chemicals in diet beverages that helps cause the reaction to take place.

The best explanation that I could find...
from EepyBird.com:

Several people theorized that a substance called gum arabic in the Mentos breaks the surface tension of the soda, allowing the carbon dioxide bubbles to escape rapidly. This explanation doesn’t completely work. One thing that casts doubt on the gum arabic theory is that several items (like pennies!) that contain no gum arabic whatsoever also cause soda to foam violently. Several chemists have since stepped forward to say that while gum arabic may contribute to the reaction, that can’t be the only cause.

These chemists are saying that the primary cause is physical, not chemical. Their explanation: nucleation sites. If you have a liquid that is supersaturated with gas (like soda, which is pumped full of carbon dioxide), a nucleation site is a place where the gas is able to form bubbles. Nucleation sites can be scratches on a surface or specks of dust – anywhere that you have a high surface area in a very small volume. That's where bubbles can form.

Mentos seem to be loaded with nucleation sites. In other words, there are so many microscopic nooks and crannies on the surface of a Mento that an incredible number of bubbles will form when you drop it in a bottle of soda. Since the Mentos are also heavy enough to sink, they react with the soda all the way to the bottom. The escaping bubbles quickly turn into a raging foam, and the pressure builds dramatically. Before you know it, you've got a big geyser happening!

this seems correct to me...

also, on the soda lake urban legend, how about a mento truck is delivering mento to south africa, but drives into a soda lake in kenya and kills thousands of flamingos.
Lake Nakuru would work...

Many scientists claim that the Mentos phenomenon is a physical reaction, not a chemical one. Water molecules strongly attract each other, linking together to form a tight mesh around each bubble of carbon dioxide gas in the soda. In order to form a new bubble, or even to expand a bubble that has already formed, water molecules must push away from each other. It takes extra energy to break this "surface tension." In other words, water "resists" the expansion of bubbles in the soda.

When you drop the Mentos into the soda, the gelatin and gum arabic from the dissolving candy break the surface tension. This disrupts the water mesh, so that it takes less work to expand and form new bubbles. Each Mentos candy has thousands of tiny pits all over the surface. These tiny pits are called nucleation sites - perfect places for carbon dioxide bubbles to form. As soon as the Mentos hit the soda, bubbles form all over the surface of the candy. Couple this with the fact that the Mentos candies are heavy and sink to the bottom of the bottle and you've got a double-whammy. When all this gas is released, it literally pushes all of the liquid up and out of the bottle in an incredible soda blast. You can see a similar effect when cooking potatoes or pasta are lowered into a pot of boiling water. The water will sometimes boil over because organic materials that leach out of the cooking potatoes or pasta disrupt the tight mesh of water molecules at the surface of the water, making it easier for bubbles and foam to form.

So in essence it is both the suface and the gum arabic.

I gotta try this.

lol im doing this today in the park as a rocket and recording it for my website! nice

One mento in a bottle of diet pepsi doesn't do much. But 10 sets it off!!! Fun!! Make sure your pepsi is run temp.

i too would like to see a person(or kid )throw up diet coke and mentos....HEHE!It probably comes out through the nose too!!!

OMG!!! in his eye and neck
i gotta be careful
im gonna do it soon
yay!

Hi, I am doing a Science fair report on Diet Coke and Mentos. I was wondering is it just the mentos that causes it to explode? If so, why doesn't it work in normal coke, or mt. dew? What is it that makes "Diet" coke so special? Does IT also have a chemical that causes it to explode?
I know the Arabic gum checmical causes it to somewhat explode, but what is it that really gets it?
If you could let me know I would be very Thankful!
Thank You!
--Micah

who wants to be my friend???
:(

mentos are good!!!MMMMM

Im doing this experiment for my project/report.yes im still in school!!!Its more boooooring when you have to write like 4 pages about it!URGH!!!

Cool, 'sept this is so a "DUUUUUHHHH", it's not only the arabic gum that does it ppl... The carbine dioxide builds up in there, due to the chemicals mixing, then it will build up pressure, finding only one way out.. The top. It will then shoot out, and then stop, after the pressure gets out.

ok soooo if this whole thing w/ mentos & soda is true ill find out..... b/c me and my friend are doing it 4 a science progect........ just 2 see wat happens