Experiment in which we are going to make a rapid crystallization. To do this, we dissolve the potassium nitrate (KNO3) in water at 100ºC. The solution was then poured into a Petri dish which will be used as a crystallizer. As the solution cools down, potassium nitrate crystals are formed.
https://en.wikipedia.org/wiki/Crystallization
https://en.wikipedia.org/wiki/Potassium_nitrate
https://en.wikipedia.org/wiki/Solubility
https://en.wikipedia.org/wiki/Supersaturation
https://www.youtube.com/mopatin
