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TED-Ed

The chemistry of cold packs - John Pollard

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10,867 Questions Answered

TEDEd Animation

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If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere seconds? John Pollard details the chemistry of the cold pack, shedding light on the concepts of energetics and entropy along the way.

Watch the video and finish the Think section to complete the lesson.


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Meet The Creators

Educator
John Pollard
Animator
Henry Chung, Mark Storer, Noel Wong, Michael Field
Compositor
Ricky Earl
Artist
Ieuan Protheroe
Script Editor
Alex Gendler
Narrator
Addison Anderson

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