Does boiling water freeze faster than cold water?

Question

and what about room temperature water?

Answer 1

Yes it does don't be fooled by those who have no knowledge of science. The links below explain why. If you are still a non-believer just try it yourself. Take two ice trays and fill one with cold water and the other with boiling water. Let it freeze for a while then go back and see which one is freezing faster.

This is what I pulled from the second link: "Hot water freezes faster than cold water. Most experts say that, all things being equal, cold water freezes faster. However, things are not always equal. A curious phenomenon known as the Mpemba effect can, under some very specific (and poorly understood) circumstances, result in hot water freezing faster than cold water. One of the several possible explanations for this effect involves evaporation: if you start with extremely hot water, a good bit of it will evaporate (and a smaller quantity of water will freeze faster than a larger quantity). And so, according to chemists, this one is not a myth, and this is presumably what my high school chemistry assignment was getting at."

Answer 2

Does Boiled Water Freeze Faster

Answer 3

No. The hotter water is to begin with, the longer it will take to freeze under a particular freezing method. So cold water freezes faster than boiling or room temperature water.

However, the rate of temperature change usually depends on the difference between two temperatures. So very hot water will initially cool at a faster rate than water that is already cold. However, the hot water has so much more heat energy that it will still take much longer to reach freezing temperature than water that is already cold.

Also, please note that the answerer below who references the Mpemba effect may not have read the entirety of the second article she cited; the author of that piece clearly states that he or she found experimentally that hot water took much longer to freeze that cold water, despite the theoretically justification for why it might not.

Answer 4

This has been seriously debated. Given a well-cleaned freezer surface, cold water wins, since hot water has to become cold water before it freezes. With an older-type freezer, the hot water would melt the ice below the tray it was in, and the rate of heat transfer improved.

Answer 5

Your plumber is a chemistry moron. to confirm that water to freeze, the molecules ought to pass slower, no longer speedier. a stable is the portion of count the place the molecules have so little ability that they only vibrate in place. the standard temperature of the water, to confirm that it to freeze, could be 32°F or 0°C. It of course takes much less ability loss for something to pass from 20°C (room temperature) to 0°C than from 35°C (regarding the temperature of a heat bathe) to 0°C. So, in comparison to what your plumber instructed you, chilly water freezes speedier than heat water. worry-free try: place an ice tray crammed with chilly water and yet another ice tray crammed with warm water into 2 seperate freezers (they must seperate or warmth substitute will take place between the two ice trays). verify them at periods of time. I assure the chilly water tray will turn to ice in the past the warmth water tray does.

Answer 6

of course not.

there may be a small difference in freezing time for two samples of water at the same termperature, one boiled then cooled, the other from the tap. I don't know if the minute amount of dissolved air in the tap water would make a measureable difference.

Answer 7

YES!!