Why didn't my Mentos/Coke fountain work?

I'm sorry, but I don't have enough details to answer this question.

When the candies come into contact with the liquid, a reaction causes the formation of foam at a rapid rate. A 2006 episode of the television show Mythbusters concluded that the potassium benzoate, aspartame, and CO2 gas contained in the Diet Coke, in combination with the gelatin and gum arabic ingredients of the Mentos, all contribute to formation of the foam.[9] However, the structure of the Mentos is the most significant cause of the eruption due to nucleation. The surface of the candy is a highly pitted surface that offers a large, concentrated number of nucleation sites for CO2 bubbles to form (nucleate). Mythbusters reported that when flavored Mentos with a smooth waxy coating were tested in carbonated drink there was hardly a reaction, whereas standard Mentos added to carbonated drink formed an energetic eruption, affirming the nucleation-site theory.

This kind of reaction is called a catalytic reaction. It means that the mentos are not used up the just provide the right situation. The same thing can happen with salt and beer.

So here's a couple of things to trouble shoot

How old was the coke? If it was flat, that's trouble.

Was it diet coke? If not the lack of aspartame may have contributed to your dud.

Were they flavored mentos or plain mint ones? The surface is important as stated above.

There are no failed experiments (mints lol) just learning experiences.

Good luck

Maybe you didn't put enough in, maybe you were mistaken and they weren't mentos, maybe the coke was flat. In future, do the experiment with just you around before you do it infront of others.

My guess would be either the Mentos the Soda or both expired.

Is ur mentos mint flavor or expired ? Is ur coke expired ? Maybe the coke lost its fizzy-ness.

You poor half of the coke out. And then put two packs of mentors not the fruit flavored the regular ones

Next time try a lump of metallic potassium and some liquid oxygen.

It doesn't half go with a bang!

It needs to be diet coke....

http://www.topnews.in/files/Mentos-Diet-Coke.jpg

It has to be diet coke. It's the artificial sweetener that makes it happen.

Mythbusters proved long ago that it is a myth. I believe them.

Francium and water.Bye-bye... boom