what temp does water boil at?
103065
212 degrees farenheit,at sea level.
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!
844535
If you think about a comparison scale, water boils at 100 degC and 212 degF.  If you equate the units and heat water to 100 degC it will boil, but if you heat water to 100 degF, you have a nice bath.\n\nSo, an increase in temp of 1 degC if more than 1 degF.\n\nOr, imperically:\n\ndegF = 1.8(degC) + 32.
836671
At an atmosheric pressure of 101.3 KPa (14.7 psi), the usual pressure at sea-level (it DOES vary a bit with the weather), water boils at 212 deg.F or 100 deg.C.  However, the boiling point goes down as the atmospheric pressure goes down, which is what happens when you go up in elevation.  Where I live, the elevation is about 4600 ft.  In a physics lab I took here, one of the experiments was to measure the B.P. of water.  It turned out to be 92 deg.C.
195177
It  isn't boiling.\n\nIt steams because it is well above the temperature of the surrounding air.\n\nWhen the air heated by the hot water in the teacup rises, and reaches the cooler room of the air, the moisture condenses.\n\nBoiling is 212 F. Room temperature might be 70 F.
1117920
It will be water at 100 degrees that will stay that temperature longer b/c of the increased volume.  The only way to increase the temp is to increase the energy (temperature) while keeping the same mass (like putting flame under the container of water).  Since you are increasing mass AND energy, it balances out.
795407
Of course it does.  If your water is at 99C, it will boil a lot faster than if you heat it from a 4C temperature.\nSame is true fro the freezing part; although variations would depend on the presence of an open or closed container, as evaporative cooling will take place is water is allowed to escape.
786932
Boiling point is the temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure.  Raising the temperature of a liquid increases the vapor pressure.  The higher the vapor pressure of a liquid already is, the lower the temperature required for it to boil.  Oxygen has a lower boiling point than hydrogen because it has a higher vapor pressure.  The reason for this is because there are less intermolecular forces holding oxygen together than there are intermolecular forces holding together hydrogen chloride.  In oxygen, there are weak London forces and nonpolar-covalent bonds.  In hydrogen chloride, there are London forces AND a polar-covalent bond.
734492
Heat = mass x specific heat of material x change of temperature.\nSpecific heat of water is 1. So the amount of heat needed to be added is the mass of the water x the amount of change needed to get to boiling. So cold water does not boil faster. \n\nsalt will cause it to take longer. \n\nPeople think that tea tastes betterr if you start with cold water, which holds more oxygen. As you heat the water, the oxygen comes out. This may look like boiling.
147894
Depends on the tempertaure of the water amongst other things.
15822
It mainly depends on the pressure (if we are talking about pure water). The higher the pressure, the higher the boiling point - it can be much lower (ex. high in the mountains) or much higher than 100 degrees C (the boiling point under normal atmospheric pressure). If we don't talk about pure water, then adding other chemicals (for example, table salt - sodium chloride) can raise the boiling point as well.
297542
well lets see, if cold water is anything above 0 Centigrade and hot water is anything under boiling....my money is on the hot winning. What I can not understand is why you asked?
64882
Water's boiling point is 100 degrees Celcious (212 Fahrenheit), at zero altitude. Altitude can change the boiling point for water.\n\nYou can calculate that if you know your altitude, by following the link provided below.
209192
Boiling Point: \n204C (399F) \nMelting Point: \n100C (212F) \n\nCHECK IT OUT BUT I THINK ITS CORRECT
253095
Did you try boiling water?
872856
It will eventually melt at 2572C, and it will boil at 2850C.\n\nHeat does not cause it to react, typically.
601632
Water boiling has to do with air pressure.\n\nThe higher your elevation, the less pressure exerted on the water, so it can boil at a lower temperature.\n\nThe closer to sea level you get, the more air pressure there is, so it requires more energy to boil.  (Going lower then sea level will still increase the boiling temperature).\n\nIt's also important to note, that when water is boiling, it keeps a constant temperature.  So if you look at this graph of time vs average temperature....\n\n|.........../..\n|........../..\n|....------.... <---  Boiling Temperature\n|../...........\n|./............\n\nYou see that when the boiling occurs, the temperature does not increase.  Only when all the water is evaporated does the temperature increase.  This ALSO works for ice in water.  The water will remain at 0 degrees celcius till all the ice is melted.\n\nHope this helps you understand melting/boiling points.