Key term for AQA GCSE Chemistry, used in Energy Changes in Reactions.
Single-use first aid devices that rely on the endothermic dissolving of a salt, like ammonium nitrate in water, to absorb heat and cool injuries.
Instant cold packs appears in AQA GCSE Chemistry revision content for Energy changes, especially Energy Changes in Reactions and Exothermic and Endothermic Processes.
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