IntroductionSupercooling is the procedure of cooling a liquid below its normal freezing point without freezing (Science Daily). How does it do that? Why does it do that? Who invented it? Get ready, because supercooling is super cool. Supercooling is a condition in which liquids do not freeze below their normal freezing point of 32 degrees (ESRF). The liquid is stuck in what is called a metastable state. This is a state in which something can exist in long-lived states that are less stable than the most stable form of liquids. This can only be achieved if there is no seed to trigger the crystallization process. High altitude clouds are a good example. Clouds contain tiny drops of water and when there are no seeds to trigger crystallization, they do not turn into ice no matter how cold it is. However, in everyday life there are seeds that trigger crystallization. The answer to why this works can be found in the physics of crystallization. To form a crystal, you need something that allows crystals to grow around a nucleus of regularly arranged atoms (School Science). Crystallization most often occurs when a liquid touches a solid surface or when the liquid contains crystalline impurities. It's a bit as if the liquid copies the ordered structure of the solid. This is also known as heterogeneous nucleation. In the liquid state, neighboring atoms touch each other as if they were a solid, the individual atoms move forming the perfect regular pattern of a crystal (Science In School). The density of a liquid is not that different from the density of a solid. To form an ice crystal, you need a structure that can be repeated periodically (ESRF). This is not possible with coordinated quintuple groups. In a... middle of paper...... but if the soft drink is poured into an icy bowl that has just come out of the freezer, it will freeze before your eyes. In the glass, ice crystals may accumulate at the top, to solve this problem, take a spoon or straw and stir the drink, instantly the soft drink will freeze. Try to keep the soft drink liquefied by pouring it into a clean bowl. Then freeze it by placing a small piece of ice on it. The ice crystals will grow until the bowl is filled with another supercooled soft drink. This trick works just as well with a can, but only if the pressure releases very, very slowly, otherwise it will crystallize inside the can. .businessinsider.com/easy-slushie-soda-at-home-2013-7 http://lybio.net/self-freezing-coca-cola-the-trick-that-works-on-any-soda/science- technology/http://www.scienceinschool.org/print/1953