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Thread: freezing hot and cold water

  1. #1 freezing hot and cold water 
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    ok so i researched about this, in regarding to this question: which water freezes longer between cold and hot water?";and it is most likely that hot water would freeze first.
    I tried the experiment but cold water seems to freeze faster than hot water.

    cold water is about 4ºC (39.2ºF?)
    hot water is about 80ºC (176ºF?)

    so is it the temperature of the water m getting wrong, or something else?
    I really need help as the results of this experiment need to be included in my science open-ended investigation- and im hoping the results are accurate before proceeding with conclusion, etc.

    THANKS IN ADVANCE :-D


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  3. #2  
    Universal Mind John Galt's Avatar
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    That looks like too large a difference in temperature. I would have thought cold would have been more like a cool room temperature - say 60 farenheit.

    I would scan the hits you got from searching for this on google. One of these should lead you to a link where the detailes of an experiment are discussed.


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  4. #3  
    Forum Isotope Zelos's Avatar
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    first of all, dont use farenheit because we are on a science forum and in the world of science u use celcius. capish?

    secondly i saw that on tv. and they said the hot water freezes faster than the cold one, why i dont know.
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  5. #4  
    Universal Mind John Galt's Avatar
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    Quote Originally Posted by Zelos
    first of all, dont use farenheit because we are on a science forum and in the world of science u use celcius. capish?
    Technically you may be correct, but:
    a) I grew up with Farenheit. I understand Farenheit. It is in my blood.
    b) I work in an industry that measures fluid densities in pounds per gallon, or pound per cubic foot, and yield point in lbs/100 sq ft, and mixes and matches three or four different unit systems with gay abandon.
    c) I lacked the time to make the conversion to a figure that I thought out in Farenheit.
    4) The original poster provided both scales and was therefore familiar with both.
    5) I am the reincarnation of Joule.


    Capish?
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  6. #5  
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    There is a very narrow temperature window where hot water can freeze faster than cold water - it's caused by the fact that some of the hot water will evaporate, so in the end you have less of the hot water to freeze than cold water. But if the difference is too great you still end up with the cold water freezing first.
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  7. #6  
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    5) I am the reincarnation of Joule.


    i have also seen this experiment, and i never did see the point of it
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  8. #7  
    Forum Isotope Zelos's Avatar
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    Ophiolite
    a/b) who cares?
    c) learn the correct system then
    4) who cares use correct system
    5) hu?
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

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  9. #8  
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    It’s a matter of taste, whether you use Fahrenheit or Celsius.

    For chemistry, I would always fine Kelvin the best, dealing with gasses its handy. all up to whoever’s using it!

    So he cares, it’s not absolutely the correct system and joule was a very famous scientist!
    Stumble on through life.
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  10. #9  
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    Quote Originally Posted by Zelos
    first of all, dont use farenheit because we are on a science forum and in the world of science u use celcius. capish?
    If you can't figure out how to quickly and easily convert one to the other, you probably have close to zero chance of engaging in a meaningful discussion anyway.
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  11. #10  
    Forum Isotope Zelos's Avatar
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    it aint so hard, 32F=0C
    98,7~100F = 37C
    212~200 = 100C
    0F=18C
    with that knowledge u can pretty fast do a approximate value on what kind of temperature we are talking about in the normal range of temperatires
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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  12. #11  
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    um.. so exactly, what temperatures should i use for cold and hot water because i think my first experiment failed?
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