October 19

Ice is the name given to any one of the 14 known solid phases of water. It is a crystalline solid, which can appear transparent or an opaque bluish-white color depending on the presence of impurities such as air.
The most common phase transition to ice occurs when liquid water is cooled below 32 °F at standard atmospheric pressure. It can also deposit from a vapor with no intervening liquid phase, such as in the formation of frost.
 

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