The chemistry of cold packs - John Pollard
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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.
Imagine you were going to design a heat pack that worked in a similar fashion as the cold pack described in the video. Describe how the solid dissolution would occur and how the device would work as a heat pack instead of a cold pack.
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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
