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How To Make Instant Hot Ice watch!

hallpass.com — Create liquid that radiates heat and turns solid if something touches it.

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  • mb3581, on 10/11/2007, -15/+2just watched this a few minutes ago after watching how to make thermite.... i wondered how long it would take it to get submitted and front paged.... this stuff is pretty cool
  • IDuggDigg, on 10/11/2007, -12/+4Thats awesome Im impressed !!

    • ogsd89, on 10/11/2007, -0/+17I'm impressed too, but i thought the title said "instant hot rice".damn
  • drawkward84, on 10/11/2007, -32/+5Was a soundtrack really necessary?
    • NicksVideo, on 10/11/2007, -1/+59It would have probably been horribly boring if it was just 2 minutes of complete silence.
    • markperia, on 10/11/2007, -3/+16yes, yes it is.
    • pivovy, on 10/11/2007, -0/+1soundtrack is awesome and it fits in just fine
  • vednode, on 10/11/2007, -9/+12Safe to eat?
  • chrisp9446, on 10/11/2007, -2/+26Ah the glories of supersaturation!
    • Sealab2021, on 10/11/2007, -9/+49@chrisp9446 (#6993757)
      This video is BS. The guy in it has no idea what he is talking about. Here is Chem-101 for all of you who missed it. If you take a cup of water and add salt to it you will notice it "disappearing." What is going on is the salt is really dissolving into the water. The water molecules are breaking the salt molecule up. If you keep adding salt you will soon notice that it has stopped dissolving. The solution has become saturated, in laymen terms, there is no more room for the salt to dissolve. If you heated the water more salt can be dissolved. Now, if you take that hot water with more salt in it and cool it, well you just made a super saturated mixture. There is more salt than the water can hold at that temp. in the water. Nothing will happen until you add a seed crystal. If you drop on some salt into the super saturated solution, it will cause the rest of the salt to come out to. Because the salt is evenly distributed it will appear to "freeze" but really it is salt coming out. So, replace the salt with Sodium acetate and BAM, you get MAGIC WATER.

      Also, the video failed to mention that he had some Sodium acetate on the tip of his finger. You NEED a seed crystal to start the reaction. And it is not really solid ice but more of a mush like mud.

      A way easer way to get instant freezing water is to take an unopened non flavored water bottle and put it in the freezer for between 40-60 min. Then take it out and shake it, hit it or pour it out. The results are very similar.

      And finally this is not used in hand warmers. Most hand warmers use iron powder to cause oxidation which gives off heat.

      /rant
    • TCEuk, on 10/11/2007, -2/+9@Sealab

      http://www.mapsworldwide.com/sku_29087.htm:

      Not quite.. ones like these are based on the same type of reaction, i'd hazard a guess that they use the same chemical.. they are 'rechargable' by boiling them (to re-dissolve the sodium acetate). And geez.. what's the big deal.. so he doesn't explain why or how this happens? Does it really matter.. i dont think the point of the video was a science lesson.
    • LexisNexis, on 10/11/2007, -0/+11Yeah, I bought hand warmers that reacted exactly the same way as shown in the video. They could be 'recharged' by boiling them. I think you were kind of harsh sealab, he was just showing how, not explaining why.
    • tize, on 10/11/2007, -1/+3sealab just blew my mind
  • CptCancer, on 10/11/2007, -2/+20It's like a safe version of Ice-9. You know, without the whole "destroying the Earth" thing.
    • esotericguy, on 10/11/2007, -1/+17note to self: read Cat's Cradle
    • Drewsufer, on 10/11/2007, -3/+0Eh, note to you: Dont
    • icoup, on 10/11/2007, -0/+2@cptcancer (#6993767)
      exactly what i was thinking... going to have to go find that book.
  • MoonCheese916, on 10/11/2007, -3/+1that was sweet
  • JordanV32, on 10/11/2007, -3/+28its not really ice... its just a supersaturated solution crystallizing. so yeah, dont eat it. its solid sodium acetate
    • SpaceDreamer, on 10/11/2007, -0/+7wouldn't it work with another salt?
      such as... salt?
  • hbeierg, on 10/11/2007, -9/+3every good digg story deserves a wikipedia link http://en.wikipedia.org/wiki/Sodium_acetate
  • ryanonfire, on 10/11/2007, -1/+8"Sodium acetate is used in the textile industry to neutralize sulfuric acid waste streams, and as a photoresist while using aniline dyes. It is also a pickling agent in chrome tanning, and it helps to retard vulcanization of chloroprene in synthetic rubber production."
    • Walker2323, on 10/11/2007, -3/+40You said retard.
    • supermanred, on 10/11/2007, -11/+2Sounds safe to eat to me. We eat some ***** up ***** in the west.
  • BoomShake007, on 10/11/2007, -1/+6"Sodium acetate is also used in consumer heating pads or hand warmers. When sodium acetate trihydrate crystals (melting point 58 °C) are heated to around 100 °C, they melt. When this melt cools, it gives a supersaturated solution of sodium acetate in water. By clicking on a disc in the heating pad, a nucleation center is formed which causes the solution to crystallize into solid sodium acetate trihydrate again. The bond-forming process of crystallization is exothermic, hence heat is emitted."
    • JaYBrooks, on 10/11/2007, -0/+5I have a set of them. They are in a clear pouch and come with a fabric sock to put them in. You click the disc and it turns to ice that is hot. Its wacky. Very cool though. lately I have only been able to find the disposable hand warmers that get worm from a metal rusting in the pouch. It takes to long and they don't last nearly as long as the liquid filled pouches.
  • Daveecee, on 10/11/2007, -0/+8Can you re-liquify it and do the same thing again?
    • aclements, on 10/11/2007, -1/+6Yes.
    • Ageroth, on 10/11/2007, -0/+2yes you can, you put the pouch into a pot of boiling water and it turns the crystals back to a liquid. then all you have to do is put it in your freezer to cool down and you're ready to go.
  • orientis, on 10/11/2007, -8/+1WTF is that thing in the middle of the goddamn screen? Buried for I CAN'T SEE THE VIDEO
  • nemobushido, on 10/11/2007, -8/+0this is the same chemical process that occurs in liquid bulletproof vests.
    • eggo, on 10/11/2007, -0/+6No, it isn't. Those are what is called 'shear thickening' liquids, think water and cornstarch.
  • mal1964, on 10/11/2007, -0/+2all you have is cold beer? ya sorry dude i forgot you like it hot , wait a second i know this sweet trick!
  • schrags, on 10/11/2007, -0/+2Look's like the corona trick...
  • ryanonfire, on 10/11/2007, -0/+1Delicous as hell
  • CheapDigWannbe, on 10/11/2007, -0/+4I want that substance.... In my super soaker!
  • pentomino, on 10/11/2007, -0/+1Makes sense that you shouldn't eat it, for the same reason you don't drink sea water. Salt may be edible, and water may be potable, but sea water will kill you.
  • fuzzboxer, on 10/11/2007, -0/+1Am the only one that is trying to find a video of that quote in Rookie of the Year?

    HOT ICE!
  • weedancer, on 10/11/2007, -0/+0So thats how Iceman tricked shadowcat! I bet the science teacher was in on it!
  • scjones, on 10/11/2007, -0/+1Oh cool a French Tickler. Nice.
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