When a can of pop soda is shaken, and u open it, the pop will burst out of the can. why?
99440
http://www.pa.msu.edu/sciencet/ask_st/111192.html
629212
The pressure between the inside of the can and the outside will equalize. It won't blow up in the sense of destroying the can. What might happen is that the metal near the puncture will tear a bit as the escaping gas rushes past it- in the same way a hole in a dam would 'grow' as water flows through it.\n\nProbably of more interest is that the escaping gas will be at a much, much colder temperature as it expands. This can lead to a surprising freezing effect at, on and near the can.\n\nIt is much more dangerous to heat a pressurized can without puncturing it. In this case, the can can fail as the pressure increases (due to the heating) and burst along a large seam instead of a small hole. Pieces of the can can be ejected quite powerfully in this scenario. The puncture scenario doesn't give you this effect at all.
259953
All of the previous answers are right.  In order to produce carbonic acid (for taste) you have to inject CO2 gas into a liquid but in order for it to stay in solution this has to be done under high pressure.  That is why when you open the can you are releasing the pressure inside of it exposing the liquid to the atmosphere.  Atmospheric pressure isn't strong enough to keep the CO2 in solution (because CO2 is not very soluble in water at atmospheric pressure) so the reaction that was poster earlier works in reverse, and the carbonic acid breaks down to CO2 and water.  The CO2 forms bubbles that are less dense than water so they rises to the surface of the liquid and out into the atmosphere.  That is why flat soda tastes different than "fresh", because most of the carbonic acid has broken down and you can't enjoy its flavor anymore.  This is the same principle behind "the bends", when nitrogen becomes insoluble in a diver's bloodstream and forms bubbles which can clog blood vessels.
132256
ACTUALLLY, HICCUPS ARE CAUSED BY A SPASM OF YOUR DIAPHRAM. I HAVE NOTICED BEFORE THAT AFTER I DRINK A COKE THAT HICCUPS MAY START BECAUSE OF THE CARBONATION IN THE COKE, SO IT MAY BE A COINCEDENCE.
145784
Water expands when it freezes. The drink was mostly water. That broke the glass, but it brokr before the drink was completely frozen, so the carbonation caused the drink to spray all over the freezer.
115627
when u eat fast or drink fast the air in the stomach is traped in and then it trys to come out and this makes you have the hickup sort of pressue inside and out is not the same so there is the contraction and relexation.
858849
Easy. You heated the can, which means the air inside the can, including steam, was at a high temperature. That means it occupied more space. When you dunked it into cold water, the steam turned back into water, and the air in the can became more dense. The can crumpled because you basically created a vacuum effect. You decreased the volume suddenly by reducing the temperature.\n\nEnough?
731244
The same reason that bubble gum pops.
94679
carbonated drinks [COKE] have co2 which  is the gas that cause the foam,bubbles when you pour it. I dont think it really burns but it gives you that sensation because when you BURRRRRP! {EXCUSE ME} the gas is rushing out escaping thru your nostril bring your inner body temperature to ambient tempeerature usally cooler that body temperature
1013945
shaking it releases alot of gass out, thats why.
349341
Thats why soda is so bad for you.  Your basically dumping a can of acid into your body.  I can't even imagine the damage it does in there.
85146
When you freeze water it expands, which increases it's volume. With a closed bottle, the pressure gives the expanding water no where to go, therefore the bottle must expand with the water, making it explode.
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.
454772
This could be caused from tension, and when your muscles relax, where the spinal column meets the back of the head it will crack and pop.  kinda like cracking the nuckles?
159953
When moist air cools (air collects moisture through evaporation) that moisture starts to condense (think the side of your can of pop in the summer with all the droplets on it).  That's what clouds are, condensation.  Back to the pop can, when too much moisture collects on the side, it starts to run down the can.  That's what happens in the cloud -- too much moisture causes precipitation (rain).
479009
Pressure increases when dissolved gases come out of solution (leave their dissolved state and become a free gas).\n\nMany things will cause some of the dissolved carbon dioxide in soda to go from dissolved to gas form.  Heat, dissolving something in the soda that is more soluble than CO2 (like salt), impurities in the liquid, and shock or vibration - which create "nucleation" sites that the dissolved gas can collect around and become gaseous.\n\nShaking creates nucleation sites.
116754
In a bottle of softdrink carbonic gas is filled under pressure. So you get the bubbles when you open it. The pressure decreases in the bottle when you open it and so the volume increases.\nIt's due to Volume to Pressure's Inverse Proportionality.