what would be the world like if water were more dense as solid than a liquid?
466958
all of us will be in solid state, bearing in mind that the human body is made up of 50 to 75 percent water.  we can't move unless we are from planet Krypton.
273941
to take grandeyeglass's link one level further,\nhttp://www.lsbu.ac.uk/water/phase.html\nWould be nice to get this chart overlayed with adiabatic and iso-volumetric contours.\n\nSo the answer is YES there are pressure/temp regions where the only difference between liquid and solid is purely pressure.\n\nAt a temperature of -10C, and a pressure of 200MPa, H2O is liquid. But if you increase the pressure to 450MPa, H2O solidifies to ice-V with a density of 1.23 g/cc. Also, amazingly, if you decrease the pressure from 200 to 100MPa, it solidifies to ice-Ih with a density of 0.92 g/cc.\n\nAt room temp (20C) you have to increase the pressure to 900MPa to solidify it to ice-VI with a density of 1.31 g/cc.\n\nH2O is amazing stuff... I have learnt something here...
1018649
Water reaches a density maxima at 4C.
199332
Can't give you a definite answer but as the primary ingredient will be water it will have a density very similar to that of water which is 1.000.
271556
In addition to the fact that at 4 degrees celcius, water has an absolute density of EXACTLY 1 g/cc, at 0 degrees, it is in equilibrium with its solid phase (ice) which has a density of LESS than 1 g/cc due to its open cage like crystal structure. So, its exact density at 0 degrees is impossible to standardise.
838267
Density plays an important role in the working of the planet.  Less dense things rise above more dense things.  Also, density changes with state (solid, liquid, gas).  Consider water, it is the only substance where the solid form is less dense than the liquid form.  Because of this, ice floats.  Imagine if ice didn't float, but sank.  When the tops of lakes froze in the winter, the ice would sink down to even colder areas (and not melt), then the next layer would fall on top of that one.  Eventually the whole lake would be a block of ice.  There might even be similar events with entire oceans or at least in the polar regions.   Density also affects heat transfer.  The more dense something is, the more molecules there are in contact with each other.  What heats up faster, air or cement?  Cement, because the molecules constantly collide with each other whereas in air, there is so much empty space that they often miss each other.  Therefore there are fewer collisions and less heat is transferred.  Hope this helps get your mind jogging.
656289
ice floats in water because its 10% less dense than water, \n\nbut not all ice has to be ontop of water, so no not all the world's ice floating
494956
floating shows that an object is less dense than water.  Think cooking oil spilled into a kitchen sink.  Does it float on top, or does it sink?\n\nLet d=density:\nd(water)=1.00\nd(oil) < 1.00, therefore it will float\n\nBut also, a chunk of iron (I believe) has a density of around 5.00 (of some unit, it's been two years since I've dealt with density questions on a regular basis.  Someone want to patch my answer for me?).  Since it is greater than that of water, it will drop like a rock to the bottom.\n\nd(lead,iron, etc.) > 1.00, therefore it will sink.
507723
3,470 J/(kg*K)\n\nIt is close, but definitely less than for water. You can view human body as water+ some solids(protein, fat, bone). Very few materials come close or exceed water in specific heat capacity, and ones that do are liquids.
1046309
I am going to assume that you mean less dense.  The answer heat was correct. There are many chemicals that can be dissolved in water to make it less dense. \n\nBut, if your question really is to make a set amount of water lighter then the answer is no. Anything that you add to it would either have no measurable effect to its weight or would make it heavier even if less dense.  \n\nHowever because you are talking weight and not mass there is a possibility. If you put a jar of water on an oil proof scale inside of a larger jar and added oil to the larger jar the jar of water would weight less. So I guess there are things you can do to manipulate the weight and the density, but not the mass. \n\nExcept if you added enough pressure you could make the hydrogen and eventually even the oxygen to go through a fusion reaction and that would convert some of the mass into energy and therefore make it both weigh less under equal gravitational conditions and be less massive.\n\nI guess with such a loosely worded question there are lots of possibilities. Of course you could even go the route of adding a luminescent chemical to lighten it up. Add a colloidal oil that turns it white.\n\nYou could add a group I metal to it which would make it lighter by many different definitions of lighter and brighter, but I would not suggest doing this.
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.
1142972
In short, ice float in water because it is less dense.\n\nDensity = mass / volume\n\nFor a more thorough explanation, one needs to look at what happens when liquid water freezes into solid water (ice).\nAs the water freezes and becomes a solid, it expands.  The volume of a given mass of water becomes larger, therefore the density decreases.  Without going into the effects of buoyancy to explain "why" less dense things float (the weight of the fluid they displace is greater than the weight of the object), just accept that they do.\n\nTo be even more thorough,\nWater expands when it freezes because of the strong, "Hydrogen bonding", intermolecular forces which exist between the water molecules in the liquid/solid.\nWhen water is a liquid, the molecules have much more freedom to move around and rotate any way they please, but when the water freezes into a solid, the molecules have significantly less energy (thus less freedom to move around) and try to take on the most stable/low energy state they can...which happens to be in a lattice structure which has a higher volume that when the molecules were in the liquid state.  So it is because of the Hydrogen bonding present between the water molecules that solid ice float in liquid water.
162268
The density of the fluid and the density of the object.
685263
as you know the density of ice and water is slightly different.\n\nmultiply the height by the ratio of densities, i.e. density of water/density of snow.\n\nIce has a density of 0.917 g/cm³ at 0 °C, whereas water has a density of 0.9998 g/cm³ at the same temperature
680258
Water! Most of the earth is covered with water.
879719
They are actually not similar.\n\nWater, unlike most substances, becomes less dense when it freezes. This is why ice floats and (in a way) one of the properties of water that allows life as we know it to exist.\n\nEvaporation of sea water leaves behind solutes (salt, minerals, etc) that become more concentrated over time, increasing overall density of the water left behind (if it's not replenished with fresh water). This is why you see people float so easily on dead-sea type bodies of water (the Aral Sea, Great Salt Lake, the Dead Sea).
1108940
Well, it doesn't, really, except that since the law of definite composition says that substances always have the same ratio of the same atoms, they're going to have the same properties, including density (mass per unit volume).  Water is always two hydrogen atoms to one oxygen atom, and will always have a density of 1.00 grams per milliliter at 4 degrees Celsius.  Same applies to all other substances.  In terms of it relating directly to volume, though, it doesn't.