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Specialization is for Insects.
Posted on Nov 03, 2007 - 12:29am by John P. in Fun Stuff, Tutorials, Videos
Wow, this video is incredible. Perhaps we’ve got some chemist in the OMB readership who will care to explain exactly how the heck this works!
This video demonstrates how to make a liquid that turns to ice at the touch of a finger. Must be one of the strangest reactions I’ve ever seen.
It looks like the only real ingredient needed other than water is Sodium Acetate.
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I’m a chemist….what’s going on???
Supersaturation leads to an exothermic crystallization of the sodium acetate (aka, it’s not the water that crystallizes or “freezes”)
what is happening here is that the sodium acetate is super saturated so when the water cools it wont crystalise. when you touch it your finger is acting like a catalist and is allowing the crystals to form