an icecube floats in a glass of water, as the ice melts will the level of the water decrease,increaase or same
310551
The water level will neither go up nor down.\nSuppose we have an ice cube of mass m floating in the water. In equilibrium, it will have to displace enough water to support its weight. It is V=m/d\nNext when the ice has melted, it turns into water of volume: V= m/d! exactly the same volume as it displaced before. So the added volume is the same, so the level of the water will not change.
832904
The melted ice cube does affect the water level. Global warming is causing the sea level to rise because the polar ice caps are melting and adding to the amount of liquid in the sea.
970947
Strange question.  First, it says z% of Earth's total icecap volume is floating, then it breaks down the total floating icecap as x% above water and y% below water.  Given that, what is the point of telling us that z% of the ice is floating?  \n\nMy real issue though, is that, since we are talking about FLOATING ice, the ocean level won't change at all.   Remember that a floating object displaces its weight (Archimedes Principle).  When the ice melts, the weight of the water stays the same - you just have the melted ice now occuping the same 92% of space in the ocean that the ice used to occupy.\n\nBy the way, the reason melting glaciers will raise ocean levels is because the glaciers are NOT floating ice until they break off - they are on land.  Actually, the ocean level rises as soon as the glacier hits the water.  After that, it doesn't matter how long it takes for the glacier to melt.
251316
It expands.  \n\nHere's an interesting point... becauase it expands, the same molecules of water take up more space as a solid than as a liquid, so it's less dense.  If it contracted (like most other things do when they go from liquid to solid) it would take up less space and be more dense... so frozen water would be heavier than liquid water.  If that were the case, ice would sink, which would be a serious bummer for fish.  As it is, since water expands, solid water (ice) is lighter than liquid water, so it floats - a serious bummer for the Titanic, but a good thing for cold drinks and fishies.\n\nI love this stuff.
215770
depends on the ice...\n\nmany different types of ice in different states of being 'frozen' and at different temperatures and with\ndifferent degrees of purity of the water or other frozen substance...\n\nthe answer would be yes more often than no...
319184
if the cold thing is cold and crystaline, like pyrex or ice, the object cracks because of rapid localised expansion.\n\nIf it is really really cold, the water will crystalise.\n\nIf cold water hits something hot it forms little drops with a protectice steam jacket and they bounce around for ages, a cool experiment for home on a hot frying pan. (only uses drops of water though)
937218
ice is converted to water and water to gas.
323097
Ice has a lower density than water. When water freezes, the way in which the molecules rearrange to make a solid means that they are slightly further apart than in liquid water. Since density = mass/volume, and in ice there is slightly less mass in the same volume, ice is less dense.\n\nTherefore, because of Archimedes' buoyancy principle (the upward force on an object in liquid is equal to the mass of substance *displaced* by the object), ice floats. The ice displaces a volume of water equal to the volume of ice, but that volume of water has more mass than the same volume of ice, so the upward force is greater than the mass of ice. So the ice floats.
730140
The ice would gain 124.3 kJ in moving from -10 °C to zero.\nThe water would lose 252.0 kJ in moving from +10°C to zero.The difference in the two energies is sufficient to melt 383 g of ice.\nSo the mixture will be at 0 °C and will consist of 6383 g of water and 5617 g of ice.
706444
Density= Mass/Volume.  When water freezes, its volume increases. This is why a frozen bottle of water expands to the point of bursting. By the formula, if volume increases and Mass stays the same, then the value of density decreases.  Thus, this is why ice floats and is less dense than water.  When the ice melts, the reverse happens in that its volume decreases and again by the formula, density will increase.   Tahdaaaa!!
53097
well, ice is solid, water is liquid, and air is gas, and the potential energy increases as the stages change.  in other words, air is the warmest, water next, and ice last.  air being the warmest will warm up the ice faster and therefore melt it quicker.\n\nthe only reason that i can see why it'd be in water is if there's been a sudden change in temperature and the water is still warm but the air is cooler (cold front after a week of mid 60s or 70s weather).
524116
Thanks to the wonderful nature of the water molecule, ice is the only product in nature that actually expands as it cools. Once water gets to be less than 4 degrees C, its crystalline nature takes over and the molecules start to line up and push each other apart. This is why ice floats on water. The colder the ice, the less dense it becomes, the higher it floats. EXPERIMENT: Take a thin glass and fill it halfway with water. Mark the level of the water with a grease pencil. Put the glass in a cold refrigerator. The water level will go down. Now put the same glass in the freezer overnight. The water level will go up. The colder the freezer, the higher it will go.
530819
Com'on people, you should know this.\n\nPut in the ice cube slowly, some water spills out, most of the ice is under water (about 92% due to lower density).  Ice melts in time and the water level drops very slightly due to: 1) water temperature drops a bit (higher density, lower volume), 2)evaporation.
160755
depends what depth.\nAt surface around -2degC\ndeeper you go (especially below the halocline) the warmer you get. -2degC is possible because the salt in the water lowers the melting point of ice to ~ -4degC.
786403
a) a lower freezing point than pure water
902687
The density of pure water is 1.0\nThe density of ice is .92 (ice expands when it freezes, so the density drops)\nThe density of sea water is 1.025 (sea water is denser then pure water because it is salty).\n\nAn ice cube floating is a glass of water is 92% submerged (compare their densities.)\n\nAn ice berg floating in sea water is 90% submerged (.92/1.025)
147051
i guessing that one of them will fall out of soln at a colder temp.  it'll crystalize.  maybe around 33 degs.