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GamblersGrin

mentos and a 2 liter bottle of soda

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http://www.stevespanglerscience.com/experiment/00000109

 

1. This activity is probably best done outside in the middle of an abandoned field, or better yet, on a huge lawn.

 

2. Carefully open the bottle of soda. Position the bottle on the ground so that it will not tip over.

 

3. Unwrap the whole roll of Mentos. The goal is to drop all of the Mentos into the bottle of soda at the same time (which is trickier than it looks). One method for doing this is to roll a piece of paper into a tube just big enough to hold the loose Mentos. You'll want to be able to position the tube directly over the mouth of the bottle so that all of the candies drop into the bottle at the same time.

 

4. Don't drop them into the bottle just yet! Warn the spectators to stand back. Okay, you're going to drop all of the Mentos into the bottle at the same time and then get truckin' (move out of the way... so long... bye- bye... hasta la vista!)

 

5. It's just like fireworks on the 4th of July. The spectators erupt, of course, in a chorus of ooohs and ahhhs. Someone yells out, "Do it again" and you do.

 

How it works:

As you probably know, soda pop is basically sugar (or diet sweetener), flavoring, water and preservatives. The thing that makes soda bubbly is invisible carbon dioxide gas, which is pumped into bottles at the bottling factory using tons of pressure. Water molecules, which are super attracted to each other, cling together and surround the tiny bubbles of gas in the liquid. The bond they form is called surface tension. Surface tension is measured by the amount of energy it takes to break the clinging water molecules apart. It takes a lot of energy! Until you open the bottle and pour a glass of soda, the gas mostly stays suspended in the liquid and cannot expand to form more bubbles, which gases naturally do.

 

If you shake the bottle and then open it, the gas is released from the protective hold of the water molecules and escapes with a whoosh, taking some of the soda along with it. When you add Mentos to the mix, get ready for an incredible explosive reaction--so explosive that the entire bottle is sometimes emptied of liquid. Why?

 

Mentos contain sugar, glucose syrup (more sugar), hydrogenated coconut oil, starch, gum arabic, an emulsifier and natural flavor. The gum arabic which makes Mentos chewy, cause the surface tension of the water molecules to break even more easily, releasing more carbon dioxide gas. This effect is enhanced by the fact that, as the candy dissolves, it forms nucleation sites -- tiny pits on the surface of the mint where more carbon dioxide bubbles can form. When all this gas is released, it thrusts the entire contents of the bottle skyward, in an incredible soda blast. Hopefully you've decided to use diet soda or you may be running for the shower!

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5. It's just like fireworks on the 4th of July. The spectators erupt, of course, in a chorus of ooohs and ahhhs. Someone yells out, "Do it again" and you do.

 

 

ha ha ha

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"Okay, you're going to drop all of the Mentos into the bottle at the same time and then get truckin' (move out of the way... so long... bye- bye... hasta la vista!)"

 

whoever wrote those directions needs to get fucking punched

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I think your going to have to take the cap off to drop the mentos in there shameless

and once the mentos are in, you aren't going to want to be

standing too close anymore...

 

soooo

drop and run

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Originally posted by JohnnyHorton@Dec 4 2005, 04:39 PM

I think your going to have to take the cap off to drop the mentos in there shameless

 

 

 

 

 

:haha:

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once, when people were setting off fireworks, a kid across the street made a soda bottle explode massively, the flames went all the way to my side of the street. he got a two liter bottle, made a small hole in the cap, took some fireworks apart and put the powder in the bottle, and put some toilet paper in the bottle. he lit it by putting a match in the hole. the only trace of the bottle found was a bit of the wrapper in my yard.

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