why does dry ice stick to our tongue?
360434
By dry, do you mean dry as in not wet? For example, ice pulled fresh from the freezer is all ice, and has no water on it.\n\nIn this case, the cold temperatures of the ice actually freeze little bits of your tongue directly to it, and they therefore stick.  If you pulled hard enough, you could get the ice off, probably ending up with a bloody tongue.\n\nPut some warm water on your tongue and the little bits of ice frozen to it will melt, thereby releasing your tongue.\n\nYou can get the same results at times by slightly wetting your finger and pressing it to the ice cube.  Either that, or sitting inside the freezer with your finger in the ice cube tray.
49651
Sorry freak...not nitrogen...frozen carbon dioxide is commonly referred to as "dry ice". And no way is it water in any sense.\n\nThanks Roscoe.
729423
It's colder outside, more wind and less humidity,less consumption of water and other liquids and of course the air inside is a lot drier and less humid because of heat. That's enough reasons for mine to be dry. Need a good moisturizing lip gloss. Chap stick doesn't really do it. Try a different brand.
373342
THAT'S BRAIN FREEZE.Thats a reaction  triggered by the cold food etc coming into contact with the roof of your mouth. It irritates nerves in the region causing them to spasm. These nerves cause the blood vessels in the brain to dilate. When vessels in the brain dilate, u get a headache. Putting your tongue to the roof of your mouth  can help the pain or drink room temp water.
1115534
Liquid Nitrogen IS dry Ice. Just add water and you get smoke! Whatever you do, don't put it in the toilet, it will be cute at first, but it could break the bowl. And NEVER ever NEVER put dry ice in a closed container. Just don't do it. It is not neat or cool and it is very expensive, painful and scary.
435058
When you first put your lips against the ice pop, they melt a small amount of the water at the surface.  As your lips cool, that water re-freezes, making a weak bond between the ice pop and your lips.
671597
From personal observation I would say not always.  When ice is frozen for a long time it seems to lose its freshness.  It picks up odors and when defrosted doesn't smell or taste like fresh water. These things would indicate physical changes probably due to evaporation and perhaps osmosis.  Both of these occurrences would produce a change in quantity.
1089269
well, I have melted dry ice, and I still get wet every time I swim.  The problem with swimming in dry ice, is that it sublimates meaning it goes directly from a solid to a gas with no liquid step in between.  so unless you can swim in gas the answer is no.
363445
It's actually a painful "freezing" of your esophagus. Many people claim putting your tongue on the roof of you mouth helps. When you do that it does apply a little pressure on your upper esophagus; maybe that does help?
1007161
It's the parotid gland....it contracts (sometimes painfully) when u eat something sour....
383295
Dry Ice is simply a solid form of Carbon Dioxide (it sublimes which means it has no liquid state at normal pressures - goes straight from solid to gas).\n\nAs carbon dioxide is not very reactive and non-flammable, as well as common in air itself, dry ice can be allowed dissipate into the atmosphere.\n\nHowever, if this is allowed to happy in a poorly ventilated space, the carbon dioxide (which is denser than air) will sink to the ground and can become a suffocation hazard in large quantities.  So it's best to used it outside, or at least in a well ventilated area.
857478
dissolution of glucose in water ( saliva) is an endothermic physical process. So heat gets absorbed & you feel cold in your mouth. but mind it that it is not a chemical reaction.
160040
Movies make out that the tounge is stuck for good.  A couple examples: "A Christmas Story," and, "Dumb and Dumber."  But you just need to exhale heavily and the tounge tip is defrosted.  It still isn't good for the tounge so it is unadvisable.
807251
dry ice\nRegular ice is water and melts at room temperature\nDry ice is carbon dioxide. it sublimated at room temperature
197725
An ER resident taught me this one.  Chew ice.  Not drink a cold drink, but chew the ice.  You will be amazed.
39540
What about discussing dry ice? As a student teacher, I have done many lessons with this. It's fun and fairly inexpensive. Get some dry ice and see what affects it and make a chart. List physical and chemical changes, etc. You can email me if you would like for further help if you like this topic.
1120704
Dry ice is frozen carbon dioxide (CO2).  As it warms it sublimates (changes from a solid state to a gaseous state without passing through a liquid state).  I believe it expands about 800 fold.  How quickly it would explode a given container depends on how much is in there plus the temperature.