TED-Ed: The chemistry of cold packs - John Pollard

The video explains how cold packs provide instant cooling through an endothermic reaction involving ammonium nitrate and water. It delves into the chemistry of energetics and entropy, highlighting how particle interactions and random motion lead to the cooling effect. The video also discusses the concepts of temperature, kinetic energy, and the distribution of particles, providing a comprehensive understanding of how cold packs work to relieve pain.

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