in order to cool something you cannot add cold, you can only remove heat.
in order to freeze water, you must remove enough calories of heat energy from the water to bring it to 0 degrees celsius( 32 degrees fahrenheit)
one calorie is the unit which increases the temperature of one gram (one cubic centimeter of water) of water by one degree celsius.
so to answer the question it depends how quickly your cooling apparatus is removing the heat. you could theoretically freeze hot water as quickly as cold water if you used a better freezer on the hot water or put it in a colder place. If the location is constant for the hot water and the cold water, and they are being cooled at the same rate, then the cold water will freeze faster.
When I'm going to make pasta on my stove, I take 190 degree water from the instant hot water tap and then put that on the stove, it boils much quicker than if I had put the cool tap water in the pot on the stove. same concept
cold water
Cold water freezes faster because hot water has to cool down to the freezing temperature before it can freeze.
Cold air and hot water makes water freeze faster simply because the hot water is steaming and so the result is that there is less water to freeze. hot water = steam = less water less water = faster freeze cold air = faster freeze
Kinetic energy
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.
The time it takes for hot water to freeze depends on factors such as the initial temperature of the hot water and the surrounding temperature. In general, hot water will freeze faster than cold water due to the Mpemba effect, which is the phenomenon where hot water freezes faster than cold water under certain conditions.
The purpose of conducting the "Does hot water freeze faster than cold water" project is to investigate and understand the phenomenon known as the Mpemba effect, which suggests that hot water can freeze faster than cold water under certain conditions. This project aims to explore this concept and potentially uncover new insights into the freezing process of water.
The fact that hot water may freeze faster than cold is often called the Mpemba effect
No. It takes longer to freeze because cold water is closer to it's freezing point.
In some cases, hot water can freeze faster than cold water due to the Mpemba effect. This phenomenon occurs because hot water can evaporate more quickly, which reduces the volume of the water and leads to faster cooling. However, there are many variables at play, so it is not a reliable method for freezing water quickly.
cold water is best because it will freeze faster
The materials needed for the experiment are: two containers to hold the water, hot water, cold water, thermometers to measure the temperature, a freezer to freeze the water, and a timer to record the time it takes for each to freeze.