More information: Yong Chan Cho et al, Impact of molecular symmetry on crystallization pathways in highly supersaturated KH 2 ...

According to this theory, a boiling liquid is a supersaturated solution of its own vapor. This is proved by holding a nucleus in any part of the liquid. It will instantly become covered with steam ...

A reusable hot pack made of a supersaturated sodium acetate solution that crystallizes spontaneously once triggered by a metal piece releases heat. A balloon filled with hydrogen gas also releases ...

Commercial heat packs (containing iron and water, or supersaturated sodium acetate) and cold packs (various ammonium salts) can be used to show exo- and endothermicity. Heat packs that contain iron ...