The chemistry of cold packs – John Pollard – Video




The chemistry of cold packs - John Pollard
View full lesson: http://ed.ted.com/lessons/how-do-cold-packs-get-cold-so-fast-john-pollard If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then,...

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The chemistry of cold packs - John Pollard - Video

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