It must be cooled to 0 oC.
Hot Water
hot filtered water
No hot water freezes, it has to cool off first.
water, it freezes when it is cold and turns to steam when it is hot.
is when hot water freezes faster then colder water (or other liquids)
If you mean, compared with cold water, it doesn't. Hot water has to cool down first, before it freezes.
The process of water freezing into ice involves the temperature of water being lowered to 32 degrees Celsius. Hot water will take longer to freeze because the difference between the temperature of hot water and 32 degrees is greater than the temperature of cold water and 32 degrees.
I believe hot water freezes faster because it is supercooled. Cold water is non-supercooled. When cold water freezes ice crystals form and float to the top, forming a layer of ice over the top of the water, so the layer of ice stops evaporation . While the hot water, which is probably no longer hot in the freezer,when it does freeze, it freezes throughout, creating more or less of a slush before freezing solid.
A hypothesis for which freezes the fastest between cold and hot water could be that hot water freezes faster than cold water. This phenomenon, known as the Mpemba effect, has been observed under specific conditions where hot water cools faster than cold water due to factors such as evaporation and convection currents. This hypothesis would need to be tested through controlled experiments to draw a conclusion.
Cold water freezes faster because hot water has to cool down to the freezing temperature before it can freeze.
Cold water will freeze faster. Because the freezing point of water is 0oC, water that is closer to that point will freeze faster then hot water. This is because it will require less time to lower the temperature to the freezing point.
0 degrees CelsiusWater begins to freeze at 32 degrees Fahrenheit, or as stated 0 degrees Celsius. Hot water will take longer to freeze than cold water since the water will take time to cool to the proper freezing temperature. The freezing point does not change, however; water will have to be cold before it finally freezes.