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Is it true that hot water freezes faster than cold water?

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Hot water does not freeze faster than cold water. Nor does cold water boil faster than hot water. For water to freeze, you must remove enough heat to bring its temperature down to 0 C. The colder the water is, the less heat you have to remove before it freezes. Answer I have no idea why this rumor is cirulating the net and the world. It is just totaly insane to even think that that could be true. If you have just heated the water to 100 degrese, then it has that much more to cool down to 0. If the waterisat 30 then it is obvious that the 30 degree would cool faster. Really now. Answer It's not exactly a rumor, it's true...at least sometimes. In scientific communities it's called "The Mpemba Effect" and was named after a Tanzanian student named Erasto Mpemba who first raised the question in the late 60s. When a container of water is placed in a freezer, there are many factors which can affect the length of time it will take to freeze, and under the proper combination of circumstances, a given volume of hot water in a container may freeze faster than the same volume of cold water. So, the best answer is, "Sometimes."
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Does hot water freeze faster than cold water?

Can hot water freeze faster than cold water? It depends. Hot watercan in fact freeze faster than cold water for a wide range ofexperimental conditions. This phenomenon is extr

Why does hot water freeze faster than cold water?

Two small identical containers (ice cube trays, for example) with  equal volumes of water are placed in a freezer - the only  difference is one container holds hot water, an

Does cold water freeze faster than hot water?

Yes. Water of any starting temperature must be cooled to 0 oC in order to freeze.

Can hot water freeze faster than cold water?

Think about it this way... If you start out with hot water, it has to cool its freezing temperature before it will freeze. Somewhere along the process it will become the sam

Why does hot water freezes faster than cold water?

Known as the Mpemba Effect after the one who bought it to modern notice. Yet too be explained satisfactorily, but much experimented. Archimedes knew that to have some wate

Does hot water freeze faster than cold inside?

  No, hot water does not freeze faster since hot water has molecules that move around faster than frozen water. It would take a higher cooling point before it would freeze

How does hot water freeze faster than cold water?

answ2. This was first bought to the attention of science in recent times by Mpemba, and the Mpemba Effect is named after him. Optimal temperatures for this astonishing exper
In Science

Can hot water freez faster than cold water?

Hot water freezes faster than cold because of the Mpemba effect because water molecules move by a stream of moving cytoplasm which causes the hot water that its molecules to m
In Science

Why would hot water freeze faster than cold water?

No. Imagine if you have two people falling from the sky. One person is 1000 feet up while the other is 10. The one closer to the goal (which in your case is freezing water) wi

How come the hot water didnt freeze faster than the cold water?

Sounds as if you were trying to repeat the Mpemba Effect. Apparently it was even known to Aristotle that to get a liquid to freeze faster, "warm it in the sun first". Enter
In Science

Does hot water freezes faster than cold water when kept under insulation?

The question is unclear - Which, if not both, temperature waters are insulated? Do the insulations, if both, vary? I am assuming we are purely talking liquids freezing here