does water than longer than metal to heat and why?
596165
Given a fixed power of heat input water would take longer due to its specific heat capacity being large.  4180Joules/kg/degree, compared with 450 for iron & 880 for Aluminium (figures STRICTLY only from memory and not to be relied on)\nOther than that are consideration of good conduction of heat in metals versus convection transporting the heat quickly within the water.\nAlso practically speaking, you might need to allow for evaporative heat loss from the water surface.
199763
What context are you describing (or is that what you are asking)?\n\nHot water will freeze slower than cold water.  In order to freeze the water temperature must be dropped to freezing temperature, and the farther away you are from freezing, the longer it will take to 'bleed' the temperature away by any known method.\n\nI am not aware of any condition where hot water will freeze faster than cold water, assuming the water in both situations is exactly the same (i.e., not water made of different material, or with another chemical in aqueous solution), so if someone can give this example, I would be very curious to see it.\n\nPerhaps there is a situation where you can heat a liquid to convert it into gas, and then from gas directly to solid (frost formation is an example of this).  I am not sure, but this might be one approach to try getting water to go to a solid state faster when the water temperature is initially higher.  The key is you are bypassing the liquid state.\n\nAddendum:\nActually now that I think about it, I have an aswer.  If you have supercooled water, i.e. water that is below freezing, it could stay in that metastable state indefintely.  So here is a case where hot water would cool faster.  The hot water will cool down to freezing and will freeze, while the supercooled water may never turn solid.\n\nAddendum:\nWow, this link that someone below posted is interesting:\nhttp://math.ucr.edu/home/baez/physics/General/hot_water.html\n\nI was going to say that it is impossible, since water at a higher temperature would have to pass through all lower temperatures, but this article pretty much explains it (in that, well, we just don't know).  It has been observed, but there is no explanation that can be agreed upon.\n\nTo be completely pedantic, I note that most of the explanations point to what I would consider to be "experimenter's errors" in the set up of the experiments (if more dissolved gas is in hotter water, than the two water mixtures are certainly not the same, so this is an invalid experiment... if there is a 'hot top', then the experimenter did not start with a homogenious mixture, and that has to be mentioned in the experiment... if the surrounding environment is not the same, then the ambient conditions are changing which not an assumption in a traditional experiment, but rather a source of error... if evaporation is allowed than some quantifiable mass of the water is not turning solid, so this again is invalid).  The only explantation that doesn't result from a poorly set up experiment is supercooling.
888554
Strangely enough, the HOT water would freeze first.  There is a chemical explanation for this.
805636
Unfortunately the answer above is not entirely correct for this context. (although the statement is correct).\n\nThe reason why water is used is because of its large specific heat capacity.  \n\nThat is also the reason why when we run (and because our bodies are mainly water), the the body temperature does not rise excessively because of the body’s high heat capacity.
178888
just saying a heat absorber is not enough , for what purpose , this is science and accurate answer , cooper , aluminium , water , oil. ..etc , pls define more
1134140
Depends on the thermoconductive properties of a certain material. Copper for example will heat up or cool down very fast.
27145
Heat of course is not a substance like water or steel or gas, but rather manifests itself in the energy contained within the electrons surrounding elements and molecules.  For example when the electromagnetic energy of a photon interacts with electrons, the electrons move to higher energy states (and shells) until the energy is released.  The atoms and molecules vibrate more and more as energy is added.  When enough energy is added, the bonds between close atoms or within molecules may be broken and the substances may melt or even dissociate.  The energy level is sometimes (but not always) indicated by temperature.  If you heat steel, it will get hotter and hotter until cherry red as atoms and molecules within it vibrate more and more.  At one point the steel will melt and at another it will vaporize and with still more energy the electrons may be stripped ionizing the atoms.\n\nWater works the same way, however as you heat ice the temperature will remain at 32F until all ice is melted because the crystalized links between water molecules require heat to break (latent heat) and the water will remain at 212F until all water is boiled away because the attraction of liquid molecules must be broken by supplying enough (latent) heat to allow water to leave the liquid surface as steam and travel at far greater velocity.
520362
since the specific heat capacity of water is more than ethyl alcohol it absorbs more heat and retains it longer.
849685
Water has a very high " specific heat ".  Specific heat is a measurement of how much energy is needed to raise the temperature of a substance. \nHere is a table of a few specific heats:\nhttp://hyperphysics.phy-astr.gsu.edu/hbase/tables/sphtt.html\n\nIf you notice, water is much higher than anything else on that list.\nFor comparison, it would take you 5 times more energy to increase the temperature of water by 1 degree than it would take to increase the temperature of solid granite by 1 degree.  \n\nWater has some very strange properties, but because it is so common, we think nothing of it!
597803
D) It's heat of fusion is higher than its heat of vaporization.\n\nWater's heat of fusion is: 334.5 kJ/kg\nWater's heat of vaporization is: 2256 kJ/kg\n\n\nE IS NOT CORRECT BECAUSE: Water is denser than ice. If water was not denser than ice, ice would not float.\n\nAnd Mr. the_bendude, you must have never taken chemistry. Heat is not the same as temperature. Yes, water boils at 100C and freezes at 0C, but that does not mean those are the heats for which it does.
216074
They don't!  The temperature of the water would actually take LONGER to drop than cold water would.  This is simple and very BASIC science!  Just like that stupid myth that cold water comes to a boil faster than hot.... damn, think for yourself and test it!
119158
All Metals are tend to loose their electrons easily.\nSo if U heat an metal Rod then it's electrons gets energy by heating and start transferring to the other end of the Metal rod. So the other end is seemed to hot
111874
Once something has already burned, it will not burn again. Water is the result of hydrogen burning.
726971
h2o has a higher specific heat, meaning it takes a greater amount of energy to change the temperature of the h2o than the metal.  That is why it takes a long time for lakes to freez, ect.
758754
materials usually expand when heated. Notable exception is ice which contracts when heated to form water.
1050458
Metals have a much higher thermal conductivity than similar non-metals.  This is because, in addition to the transport of heat by atomic vibration, heat is also carried very efficiently by the mobile electrons.  The electrons in a metal create something called an electron gas, and this gas actually has a temperature.  The electrons in this gas are free to move around carrying heat with them, and the electron gas heats the bulk of the metal.\n\nNote that it is not the individual electrons which are "hot", it is the statistical properties of huge numbers of electrons all moving at once that leads to us calling the electron gas "hot".  In a hot electron gas, some electrons are in a higher energy state than they need to be because there are empty quantum states at lower energies that can accept them.  The electrons can drop into those states by giving up some kinetic energy to an atomic nucleus, effecitvely injecting heat into the system at that point.  When you heat up one part of the metal, that heat kicks electrons out of their lowest energy states, making a hole that another electron can drop into, and the effect is that heat is moved from one part of the metal to another.\n\nNon-metallic solids do not have this electron gas conduction mechanism, so thermal conductivity in those substances is generally much lower.
984537
What you are constructing is similar to a "thermocouple".\nA thermocouple works on the principle that in any two dissimilar metals there is a potential (voltage) difference;  Meaning simply, that one has more electrons than the other.  And like water, electrons seek equilibrium. So,  metal "A"can have a positive charge compared to metal "B" but have a negative charge compared to metal"C" because it posses more or less electrons when compared.  This potential difference and electron exchange is called "electrolysis" and will fluctuate with temperature changes.  According to how large your contact surfaces are may determine the tapering off of the potential difference due to equilibrium being reached quickly near the area of contact making it more difficult for electrons further away from this area to cross over. (I am assuming that these metals are not in solution).  \n  FYI.  You can make a thermometer out of these dissimilar metals by changing the temp at point of contact and recording the voltage at different temperatures.