Freezing and Boiling Water....?
966113
Water molecules are constantly moving.\n\nWhen water warms up, they move faster and when it boils they move even faster.\n\nWhen water cools down they move slower and when it freezes, they stick together and slow down a whole lot.\n\nHowever, even when water is frozen, the molecules still move around, just much slower than we can observe.\n\nThis is true for all molecules.  At temperature absolute zero, all molecular and atomic movement would theoretically stop.  This temperature has never been achieved.\n\nPS - water molecules tend to be attracted to each other, which is why they stick together when they freeze.  when you pour some water on a table, it will stay together in a "puddle" because the water molecules are attracted to each other.
67706
Yes. It takes more time for hot water to freeze - the cooling process takes longer when you start from a higher temperature.\n\nDifferent liquids freeze at different temperatures.\n\nIt depends how cold the place where you're putting the boiling water is, how much boiling water there is, etc.\n\nI think that each liquid has a specific temperature at which it freezes - it may not be associated with thickness.
552808
Write your own essay...but water freezes when it is cold and becomes ice which expands causing the pipes to burst, that's why they need lagging/insulating to prevent this happening.
599551
Try this - predict, to the second, how long it will take to boil 1 liter of water. \n\nThen, test it. You will quickly see that there are MANY factors involved (is the pan a good conductor of heat? Electric or gas stove? Is the water 100% pure? What is the barometric pressure? What setting are you using to heat the cooktop?) and that it is impossible to predict with 100% certainty what will or won't happen. \n\nThat is essentially what meteorologists do - They try to predict the occurrence of something we know is possible by knowing very limited information.
530330
Ice melting\nWater freezing\nWater boiling\nAmmonium chloride subliming
780627
WATER BOIL AT:  27*C at 26.739 (pressure(torr)  thru 30*C at 31.824\n pressure(torr)
156495
If it had boiled dry it was way to hot and you don't know what that did to the internal components. With the fire risk that could impose, I would either have it looked at by a certified repair center for that brand or buy a new one. If there was still liquid in the pot, the risk would be greatly decreased. My husband is the world’s most forgetful person so eventually we had to get one that automatically shuts off an hour after it brews. Lots of them have this feature.
331943
Should think so.\n\nYou can take a pot of water and an intense laser with you to space (Combustion may not be your best bet, even if you are taking oxygen cylinders. It may get too unpredictable).\n\nOnce in space, direct the laser at the pot. In due time, it should 'boil'.\n\nWell actually, the behaviour of water at zero pressure is quite peculiar. It can be seen from the phase diagram that water skips the liquid state at low pressures, and exhibits sublimation. \nSo even if you manage to keep the water liquid until you ready it for boiling, the moment you expose it to space(meaning zero pressure) some of the water will immediately turn into vapour. The remaining mass, will, in the absence of any heat source, freeze. \n\nIf you do provide heating, it will obviously vapourize. \nThus, strictly speaking, it will not 'boil'.
431610
putting you hand in boiling water
299546
water "boils" when the Kinetic energy (energy of motion and heat) cause the molecules of water to expand or separate far enough away that it changes from a liquid to a gas. The greater the force keeping the molecules together, the more energy it needs. On Earth, the force is air pressure. At sea level where the pressure is greatest, water boils at about 100 degrees Celsius. Up in the mountains at 7000 feet it would boil at 80 -90 degrees or even less. In space even the smallest amount of energy would cause it to "boil".\nIt takes one calorie to raise one gram of water one degree Celsius. If you trap the water in a container, you can get the heat of the water much higher than the boiling point. But it could explode if the container is too weak to handle the pressure. So don't try it.
461815
you do the experiment yourself places a cup of cold and hot water in your freezer, the hot water will freeze first, the\nhotter the water the faster it will freeze
725234
DUE tomorrow..not do tomorrow. Boil the water and capture the steam..it should be fresh water.
2167
You can't make water boil by compressing it directly.  If you compress it, but allow the hest caused by compressing to leave, then you'll get nothing.  It is possible if you have an insulated system to compress it in such a way that temperature of the water rises, but at higher pressures, the temperature needed to boil water increases.  If the water, once heated by comprsession, were to be rapidy brought to a lower pressure through a throttling valve, it could be vaporized.\n\nBut really, if you want water to boil, you should *DECREASE* the pressure.  In out space, water at room temperature would instantly boil due to the low pressure involved.
971810
If the water is already frozen and you remove more heat, all you will get is colder ice.  Otherwise, we need to know at what point is it at in the latent heat of fusion.
789964
The best way I know how to do it is through electrolysis.  I don't think just heating it up will work; that will just cause the water to boil.
27311
The normal freezing temperature for pure water is 0c.  However, as the additives are mixed in the pure water (in this case sugar), there will be a depression in freezing point (means lower than zero).  Ultimately it dependends on the sugar concentration in the water.  For an example, you can add few crystal in water and it will still freeze around 0c (slightly below unless you have accurate thermometer) vs sugary syrup that will require much lower temp.\n\nYou can llok up more of these in any Physical Chemistry book (mine is by author ATKINS) under "Depression in Freezing Point, Elevation in Boiling Point).
920933
The water in the tank is cold. This is condensation dripping down on the burner formed when hot air touches the cold tank. \n\nOnce the water is heated it never gets cold again so you should not hear it again.\n\nGet an "A"