Science glossary film: Endothermic

A chemical reaction or process that absorbs heat from the surroundings. The melting and evaporation of water are both endothermic processes, as is dissolving ammonium nitrate in water, a trick that's exploited in some chemical cold packs.

The melting and evaporation of water are both endothermic processes, as is dissolving ammonium nitrate in water, a trick that's exploited in some chemical cold packs.