david an inquisitive three-year -old, poked his fingers into warm water inside a metal pan on a stove, then toched the pan and got a nasty burn. explain why water in a metal pan heats up far more slowly than the pan itself??????
2006-06-18 14:58:40 · 9 answers · asked by best 1 in Education & Reference ➔ Homework Help
Metal is an excellent conductor of heat. Water has what is known as "surface tension", which in addition to allowing things to float, has certain bonds that are harder to break than that of metal, so it takes a longer time to heat up. In addition, when you cook on the stove, the flame is in direct contact with the metal. In a pan, the water is heated mostly be the metal itself and not a result of the flame. Hope this answers your question.
2006-06-18 15:06:40 · answer #1 · answered by Dr. Chris 2 · 0⤊ 0⤋
well the answer is quite simple it takes less time for hot water to freeze then it does cold. also it depends how deep the water is so the more deep the water takes longer it to cool off and to heat up but the reason the pan got hotter first was because as u probably already know metal is a conduct-er of heat so if the pan is filled with water its going to take longer to heat up while the pan is so hot trying to heat the water up just like when u put water to boil it takes 6 or7 minutes to boil while if u touch the pot or pan u will be in excruciating pain.
2006-06-18 22:07:07 · answer #2 · answered by bouldy789 1 · 0⤊ 0⤋
water molecules must reach a certain temperature to heat up - 100 degrees centigrade. The molecules of the metal pan are composed differently that those of water thus the metal would heat faster. Secondly, since the metal pan is in close contact with the heating element it is going to heat up before the water would.
2006-06-18 22:11:18 · answer #3 · answered by femmenoire@sbcglobal.net 4 · 0⤊ 0⤋
It is because the pan is in contacy with the heat. The water is not. Also, often there is more mass of water to heat then mass of the pan, usually though, the heat capacities are reversed (it takes more energy to heat cast iron 1 degree then water) so answers 2 and 3 are incorrect.
2006-06-18 22:05:16 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The heat source conducts through the metal. The metal in turn heats the water. The conductor has to heat up first.
2006-06-18 22:04:38 · answer #5 · answered by Ilene W 4 · 0⤊ 0⤋
Different materials conduct heat differently. The metal (and most metals) conduct heat very effectively and so will heat up in no time at all, water on the other hand is not such a good conductor of heat.
2006-06-18 22:02:11 · answer #6 · answered by MARTIN B 4 · 0⤊ 0⤋
the flame of the stove is heating the pan first, which in turn heats the water inside of it....the heat source (the flame, i'm assuming) is in direct contact with the pan, not the water.
2006-06-18 22:01:07 · answer #7 · answered by terryleonard7 2 · 0⤊ 0⤋
the pan is metal, which conducts heat faster than the water
2006-06-18 22:01:21 · answer #8 · answered by Styx are awesome!!!!!!!!!! 2 · 0⤊ 0⤋
different materials
2006-06-18 22:09:09 · answer #9 · answered by Library Eyes 6 · 0⤊ 0⤋