Cold water...but if the water is heated than let still to room temp, it will freeze faster than regular room temp water *Because the time taken for something to cool to the temperature of its surroundings is proportional to the temperature (Newton's Law of Cooling and proceeding from there), the object with the higher temperature will take longer, thus the cold water freezes first. If the objects have the same initial temperature, they will take the same time to freeze (assuming identical conditions and a constant temperature in the surroundings for all objects). The above answer would be correct in realistic terms because boiling 'hard' water removes the dissolved ions from it (you may have noticed the "fur" in an electric jug) and raises the freezing temperature compared to unboiled water.
Cold water will freeze first. Before hot water can freeze, it must dissipate its stored heat. Its stored heat is what makes it hot. Cold water does not have to do this before freezing.
its based on what kind of jar it is in and and if u put the same amount of hot or cold water in it
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.
discovered that hot water freezes earliar than cold water.
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.
Usually not, but it is known that in some very special cases, hot water freezes faster.
Isn't cold water already cold? I would say cold water gets cold first. I've heard that hot water freezes faster than cold water.
No hot water freezes, it has to cool off first.
If you mean, compared with cold water, it doesn't. Hot water has to cool down first, before it freezes.
Hot Water
water, it freezes when it is cold and turns to steam when it is hot.
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.
It has been proven that hot water freezes faster than cold water.
Cold water. It doesn't have to cool as much as hot water does, thus it freezes faster. Under VERY specific labratory conditions, it can be made possible to have warmer water freeze faster, however, these conditions will not be present when you fill your ice tray. If you want ice, use cold water.
It would be cold water because if the freezing point for water is 0 degrees. and say the cold water is 10 degrees and the hot water 90 degrees, the cold water is closer to the freezing point than the hot water and so freezes quicker
its based on what kind of jar it is in and and if u put the same amount of hot or cold water in it
Cold water freezes faster because hot water has to cool down to the freezing temperature before it can freeze.
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.