what causes soda pop to explode when mentos are dropped in?
538547
Not knowing what mentos are, I can't give you a full answer.  However soda pop has a lot of dissolved CO2, which I imagine is forced out of solution.  So you'll have one or both of the two options\n\n1 the mentos act as a surface catalyst for the CO2 to adhere to and congregate into gas bubbles\n\n2 something in the mentos dissolves into the soda pop forcing the "precipitation" of CO2 Gas
368950
It's the extreme pressure of the carbonation trying to force itself out of a small opening.  It's like when you hold your thumb over the end of a garden hose, it makes the spray harder because the pressure is backed up in the hose.  If you had a big enough opening, it wouldn't spew everywhere.
429336
I saw the other day you could mix Mentos and Soda with explosive results.  Jobwise, you could look at food manufacturing plants.  They always need people to test the viscocity of twinkies or the acidity of Coke.
634831
because den u are decreasin d volume taken up the gas molecules and so as in boyle's law d air presure wud increase causinin d molecules 2 push on d balloon wall harder and so it bursts
574653
Because if the composition is too acidic or too basic one way or the other, the soda could be toxic.\n\nAlso, it wouldn't taste good or sell well.
1025763
Mentos is not very dense and has air pockets in it.  Soda has a low pH and is considered much more acidic than the mentos mint, which is basic enough such that it gets dissolved by your own saliva.  When acids and bases mix, fizzing bubbling usually occurs.  In this case, carbon dioxide builds up in a sealed 2 liter bottle of soda.  The gas is building up and trying to escape, and with help of a little agitation, it ends up bursting through the top of the bottle.
1147577
I've never had this happen to me, but I have heard that it can.  In fact, my aunt told me that even after you take the cup out of the microwave and go to stir it, it can explode then.
683557
If it happens only when you drink the cola it is probably heartburn or gas, try drinking another cola.  You could also be having an allergic reaction to something in that particular soda.  I would stop drinking the soda.   If the problem continues without the soda you should contact your health care provider.
392814
exactly the same question was asked on brainiac, i was able to see it and it doesnt do anything tapping a soda can is useless\n\nhttp://www.g4tv.com/brainiac/episodes/4816/Episode_21_What_is_Faster.html\n\nhere a few links with tests of that question\nhttp://www.nerdygirl.com/sodascience.php\n\nquote : Based on the data we've collected (see Table 1), it seems certain that tapping has virtually no effect on the amount of foam one can expect from a soda can. The data in the Table 1 supports this -- you will notice, actually, that there is frequently more foam in the tapped cans than in the untapped cans.\nhttp://www.stevespanglerscience.com/experiment/00000024\nquote: Most people have learned to tap the top of the can before opening it. Scientifically speaking, THIS DOES NOTHING! However, tapping the side of the can knocks bubbles off the bottom and sides of the can, at which point they rise to the top. The trick is to dislodge the bubbles from the sidewalls and bottom of the can so they can float to the top of the can (because gas is lighter than liquid) and there is only a small amount of liquid blocking their escape when you open the can. Remember, SNAP the SIDE instead of tapping the top.\n\nas you can see it is scientifically proved that it is uselles :-)\n\nhttp://www.newton.dep.anl.gov/askasci/gen01/gen01124.htm\nmore proof\nand you will find even more if you search for : tapping soda can\nhope you like this answer\n\n:-)
604452
well you can't eat them BEFORE they are POPPED... so...\n\nwhat's the issue?
93225
The gas is under pressure, so when you press the nozzel the liquid ....mmmmmm better a picture than words..\n\n http://www.aerosol.com/
779016
Nothing.\nWhat happens w/ regular soda is that mentos have a large surface area of a matte glaze to which the CO2 gas molecules can attach. and they sink to the bottom of the bottle, ejecting the soda out. If there's no gas to attach to the mentos, nothing happens.\nThis is a process called nucleation.
1096258
There is a coating of natural gum on the surface of mentos which will reduce surface tension of liquids.  Reducing the surface tension will force the release of the gas bubbles from the liquid pronto.  A tube of mentos into a 2 litre bottle will produce an instant fountain around 5 metres high.  Note - use diet coke - it's easier to clean up (not so sticky).  Lots of web sites show videos of this.
33574
lol thats a funny question i think the reason they make those noises is because there are air pockets in them and when the air pocket bust it goes snap crackle pop lol
127517
When liquids freeze it expands...if the bottle is full with the lid closed, the drink will expand beyound the boundries of the bottle.....and explode.
731244
The same reason that bubble gum pops.
413944
Here's the basic idea. Hard candy (like a lollypop or a Jolly Rancher) is made from sugar, corn syrup, water and flavoring. You heat the ingredients together and boil the mixture to drive off all of the water. Then you let the temperature rise. What you are left with is a pure sugar syrup at about 300 degrees F (150 degrees C). When it cools, you have hard candy. \n\nTo make Pop Rocks, the hot sugar mixture is allowed to mix with carbon dioxide gas at about 600 pounds per square inch (psi). The carbon dioxide gas forms tiny, 600-psi bubbles in the candy. Once it cools, you release the pressure and the candy shatters, but the pieces still contain the high-pressure bubbles (look at a piece with a magnifying glass to see the bubbles). \n\nWhen you put the candy in your mouth, it melts (just like hard candy) and releases the bubbles with a loud POP! What you are hearing and feeling is the 600-psi carbon dioxide gas being released from each bubble.