Learning with Lyrics! on Instagram: "How do instant cold packs work? 🧐🥶 Instant cold packs work by using an endothermic reaction: you squeeze the pack to break an inner bag of water, which mixes with a solid compound like urea or ammonium nitrate. This mixing process absorbs heat from its surroundings, including the air and anything the pack touches, making it feel cold! #science #physics #technology #knowledge #howitsmade"
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Instagramlearningwithlyrics
Learning with Lyrics! on Instagram: "How do instant cold packs work? 🧐🥶 Instant cold packs work by using an endothermic reaction: you squeeze the pack to break an
4,519 likes, 57 comments - learningwithlyrics on November 12, 2025: "How do instant cold packs work? 🧐🥶 Instant cold packs work by using an endothermic reaction: you squeeze the pack to break an inner bag of water, which mixes with a solid compound like urea or ammonium nitrate. This mixing process absorbs heat from its surroundings ...
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