Wonders in the world of Chemistry!

Hot ice/Instant Ice-Sodium Acetate




Damn cool weh!

When sodium acetate is heated to around 100 C it melts and when it cools it becomes a supersaturated solution in water.This solution is capable of supercooling to room temperature, well below its melting point, without forming crystals. By clicking on liquid, a nucleation center is formed which causes the solution to crystallize into solid sodium acetate again. The bond-forming process of crystallization is exothermic, hence heat is emitted.

In other words,when the sodium acetate is heated in the water,it melts and dissolved in the water,turning the water into solution that contains more of the dissolved material than could be dissolved by the solvent(supersaturated solution).

This solution can be cooled/crystallized into solid in an instance in room temperature because the freezing point of this solution=room temperature.

So when the solution is taken out from the refrigerator,it's below room temperature.
When you touch that solution,it quickly turns into a ice,because of it's freezing point.

Heat is emitted when the bond is formed between the particles to form the solid.

Understand?
I hope my explanation is right~