Mpemba effect👉👉👇

Hot water freezes faster than cold, known as the Mpemba effect. ... Evaporation is the strongest candidate to explain the Mpemba effect.
As hot water placed in an open container begins to cool, the overall mass decreases as some of the waterevaporates. With less water to freeze, the process can take less time.
The freezing point is governed by impurities in the water that seed ice crystal formation. ... It was dubbed the Mpemba effect in the 1960s when schoolboy Erasto Mpemba from Tanzania claimed in his science class that ice cream would freeze faster if it was heated first before being put in the freezer
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