Instantly Freeze Soda Experiment [13+]

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Freezing Carbonation Instanly Experiments Chemistry Physics Science Solubility Sodas Chem Demo
kentchemistry.com
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  • Added: 27-Jan-07

This works with any carbonated beverage (never use beer). Take your beverage and cool it down to a temperature around 20F or -7C. Either the freezer or outside if it is cold enough. When opened it will freeze instantly.The reason:This demonstrates the principle of freezing point depression. Pure water at 1 atm will freeze at 0C or 32F. When something is dissolved in it the freezing point drops to a lower temperature. This is why when roads are salted there are puddles even though the temperature is below freezing. The more salt the lower the temperature must go before it freezes. When you open the bottle it does the opposite. The freezing point goes from (a guess) -10C to around 0C when the CO2 leaves the solution (the concentration decrease). Since the soda is at -7C it freezes instantly when the CO2 leaves the solution.

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Comments on

Instantly Freeze Soda Experiment

39 Comments | Add Comment
  • why not beer?

    .....explain

    By andres245 1169950152 Reply Spam [+15] Moderate Up Moderate Down
  • Easy

    It is a simple Physics application of Boyle's Law. Liquids under pressure have a lower freezing point (and a higher boiling point - hence the pressure cap in your car radiator) than liquids at normal atmospheric pressure (NAP). When you unscrew the cap, the CO2 escapes, the liquid in the bottle is returned to NAP and then because it is at a lower temperature than 32 Fahrenheit (freezing point at NAP) it instantly freezes.

    By alexthe great 1169951709 Reply Spam [+10] Moderate Up Moderate Down
    • Bango

      The man's got it. I was hoping I wouldn't have to post this explanation myself.

      By RoughingMinor 1170004242 Reply Spam [+1] Moderate Up Moderate Down
    • not correct by any stretch

      boyles law relates pressure and volume of ideal gases by the relation

      P1V1=P2V2 or stated in another form PVαk

      where k is a constant

      it says nothing about about the freezing point of liquids

      in fact boyles law only governs gases and not liquids. so i have no idea where youre coming from

      and i've never heard of the acronyme NAP i think you might mean SATP which is Standard Ambient Temperature and Pressure

      By UofTchem 1195710036 Reply Spam Moderate Up Moderate Down
  • nope. i dont get it either

    what exactly do you do? step by step please

    By bmxicano 1171930114 Reply Spam [+2] Moderate Up Moderate Down
    • all

      you do is take an unopened bottle of soda and put somewhere at about 20 Fahrenheit and then once its at the designated temp you open it and it freezes. look at alexthe great's comment. i dont want to explain it.

      By happyymeal 1191203909 Reply Spam [-1] Moderate Up Moderate Down
  • I still dont understand?

    Do you have to squeeze the bottle as you break the seal?

    By AUSTINSLACKER 1169973198 Reply Spam [+1] Moderate Up Moderate Down
  • huh?

    Well i tried to do this experiment , i put the bottle in the freezer (and i shaked it before, maybe i wasn't supposed to do that),took it out later but it was already half-frozen and when i turned off the cork the icy mush started spraying out.LOL!Was that supposed to happen :) ?

    By HuntedTom 1236375761 Reply Spam Moderate Up Moderate Down
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    By jolaya 1216984630 Reply Spam Moderate Up Moderate Down
  • Них не понялЪ...

    В чем приколЪ?

    By ArkanoII 1216921510 Reply Spam Moderate Up Moderate Down
  • dumb

    how the freak do we do it bright guy

    By sicko200 1209924546 Reply Spam Moderate Up Moderate Down
  • 13 ?

    y is this 13 rated?

    By Roragon 1208558850 Reply Spam Moderate Up Moderate Down
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    By jeannettesoccerbroad 1191521726 Reply Spam Moderate Up Moderate Down
  • gross

    who threw up in the sink?

    By bushwick99 1179286279 Reply Spam Moderate Up Moderate Down
  • WELL HOW COME

    They didnt teach us how to do it in the video???? Cuz i wanna know

    By Anjelica420 1176683679 Reply Spam Moderate Up Moderate Down
  • dude

    all u have to do is put it in the freezer for a couple of hours then open it and it will freeze on the spot!

    By D13GO 1173398462 Reply Spam Moderate Up Moderate Down
  • Wait a second...

    You mean to tell me that before the drink freezes, you have to cool the drink down to below freezing??? Holy crap science rules.

    By athenaze 1170110516 Reply Spam Moderate Up Moderate Down
  • cos of the gas expanding?

    is it cos beer contains alcohol and will have a lower freezing point?

    i though it happened because of the cooling effect of expaning gas? the liquid was almost frozen anyway and the action of opening the bottle and letting the gas out cools it that little bit more?

    By steveoplymouth 1170102765 Reply Spam Moderate Up Moderate Down
    • Nothing to do with alcohol

      this was done with soda, and if beer was used alcohol does not cause this effect, its the presure relesed when he opend the bottle. when done with beer the alcohol actualy freezes before the rest.

      By seth845 1173476290 Reply Spam Moderate Up Moderate Down
  • indeed

    Not meaning to diss your explanation but I, and im sure many people have seen this done with water.

    i dont know the exact chemistry but water will not freeze at like -5C if it is kept STILL. as soon as it is stirred or moved, it will start to go solid. i get the feeling this is kinda the same with the bubbles 'moving around' the liquid.

    By tattster 1169993244 Reply Spam Moderate Up Moderate Down
    • Close

      The principle is similar, but what your talking about involves some impediment to the formation of a crystal structure. This has to do with pressure instead.

      By RoughingMinor 1170004382 Reply Spam [+2] Moderate Up Moderate Down
    • actually..

      he has it more correct than you or alex

      and it does involve disorder in the crystalline structure (its ice ffs crystalline water....)

      the release of CO2 removes the causes of disorder

      By UofTchem 1195710596 Reply Spam Moderate Up Moderate Down
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    By abbismallbroadth 1189212358 Reply Spam [-1] Moderate Up Moderate Down
  • -7C

    at -7C, isn't the soda already frozen in the freezer? LOL

    By P-BB2 1175636375 Reply Spam [-1] Moderate Up Moderate Down
  • Science explained

    Alright, this reaction is NOT caused because you are "releasing CO2 from the beverage." It has to do with Boyle's law for those of you that are into physics. There is a direct relationship between pressure and temperature. More pressure equals higher temperature; release the pressure and the temperature drops like a brick! The reason the drink ices over when you open it is the same reason that a compressed air duster gets cold when you use it awhile. When you open the bottle, you release pressure on the liquid, which instantly lowers the temperature of the liquid and simultaneously raises the freezing point. Even with BEER! Try it with a beer in the freezer, but don't leave it there too long or it will raise the pressure inside the bottle so much it EXPLODES in your freezer!

    By tpartida 1170552730 Reply Spam [-1] Moderate Up Moderate Down
  • I don't get it...

    ...I didn't see the soda freeze at all!

    By fewdisgewd! 1170027034 Reply Spam [-1] Moderate Up Moderate Down
  • I don't get it

    Where is the "instant" freezing in that?!
    He's saying cool down the temp to -7C then open the cap and it freezes, but if we cool down the soda to -7C it'll freeze anyway!
    Or he means: Take the soda somewhere at -7C and wait for 15 minutes then come back in and open?
    Hmmmmm

    By HumanH 1171366668 Reply Spam [-2] Moderate Up Moderate Down
39 Comments | Add Comment