which is more dense , glass or water and why ?
480536
should be glass. unless in its original form of sand than should be water. Remember Super-man made that huge piece of glass to reflect the sun an blind those crazy alien people!
1044414
Other substances that have a solid less dense than their liquid include the elements bismuth, gallium, and germanium.  Bismuth has a liquid density of 10.05g/cm^3, and a solid density of only 9.78g/cm^3.  Gallium has a liquid density of 6.095g/cm^3, but a solid density of 5.91g/cm^3.  Finally, germanium has a liquid density of 5.60g/cm^3 and a solid density of 5.323g/cm^3.\n\nJust for comparison, water has a liquid density of about 1.0g/cm^3 and a solid density of 0.917g/cm^3.\n\nI think I have heard of other materials that also posses this unusual property, but I can't remember them off the top of my head.  I hope this has been helpful.
144832
Oops! Wrong answer.\n\nWhat I should have done first is check the density of both liquids before answering.\n\nWhole milk has a density of 1030 km/m3,\nwhile water at 20 degrees C is 998.21 km/m3.\n\nIf they have the same volume, than whole milk is a little heavier than water. Which isn't surprising, since milk is about 87% water.
1005144
Yes, Glass is considered both a solid and a liquid. That is why old glass windows are thicker on the bottom then on the top.
629297
Answer is DRY AIR!!!\n\nTo see WHY HUMID AIR IS LESS DENSE THAN DRY AIR, we need to turn to one of the laws of nature the Italian physicist Amadeo Avogadro discovered in the early 1800s, which you might recall from your high school chemistry class.\n\nIn simple terms, Avogadro found that a fixed volume of gas, say one cubic meter, at the same temperature and pressure, would always have the same number of molecules no matter what gas is in the container. Most beginning chemistry books explain how this works. \n\nImagine a cubic foot of perfectly dry air. It contains about 78% nitrogen molecules, which each have an atomic weight of 28. Another 21% of the air is oxygen, with each molecule having an atomic weight of 32. The final one percent is a mixture of other gases, which we won't worry about. \n\nMolecules are free to move in and out of our cubic foot of air. What Avogadro discovered leads us to conclude that if we added water vapor molecules to our cubic foot of air, some of the nitrogen and oxygen molecules would leave — remember, the total number of molecules in our cubic foot of air stays the same. \n\nThe water molecules that replace nitrogen or oxygen have an atomic weight of 18. They are lighter than both nitrogen and oxygen. In other words, replacing nitrogen and oxygen with water vapor decreases the weight of the air in the cubic foot; that is, it's density decreases. \n\nWait a minute, you might say, "I know water's heavier than air." \n\nTrue, liquid water is heavier, or more dense, than air. But, the water that makes the air humid isn't liquid. It's water vapor, which is a gas that is lighter than nitrogen or oxygen.\n\nCompared to the differences made by temperature and air pressure, humidity has a small effect on the air's density. But, humid air is lighter than dry air at the same temperature and pressure
885641
Assuming that they have equal masses, it would be whichever material has the highest specific heat, because that defines how much heat energy is required to increase a unit mass of material by a unit temperature.  Water is known for having a very high specific heat, so it could be that, but you should really look up the specific heat (or "specific heat capacity") for all of these materials in your text book.
886442
most solids are more dense than the same substance in liquid phase and will sink.  Water/ice is an exception to this rule.
454982
A crystal shape is the arrangement of the molecules in a compound...carbon fiber is a crystalline structure since it is arranged in a pattern when observed under a microscope. Glass, however isn't a crystalline structure, and will be disorganized. Also, a quick fact is that glass will always be in motion due to it's non-crystalline structure. The bottom of a pane of glass will be thicker than the top after many years :) A high melting point means that it will take more heat to induce a state change... Metal is frozen at room temperature and has a high melting point, as opposed to water, which has a melting point around 33 degrees farenheit.
975645
the particles of water are far more closely packed than the particles of air. air is mostly empty space and therefore with fewer particles colliding with your hand, its going to be much easier to move your hand through the air than water.
58570
Density is measured by weight per unit of volume, such as the density of water is 62.4 pounds per cubic foot.\n\nViscosity is a measurement of the rate at which a liquid flows or more accurately, its resistance to flowing. Water has low viscosity, honey has high viscosity.
338498
There are different types of glass, with different specific heat values.  Specific Heat is also called Heat Capacity.\n\nFlint Glass   0.503 Joules / gram Kelvin\nPyrex Glass   0.753 Joules / gram Kelvin
56527
Believe it or not, glass is actually considered a liquid.  But, it flows very very very slowly over time.  That is why, eventually, windows and mirrors are a bit thicker at the bottom than at the top.
194414
Water is denser than air and transfers heat more rapidly.
855088
Wood floats in water becuase water is more dense (higher weight for the same volume) than wood. Boulders or rocks are much more dense than water so they sink. It isn't the total weight that's important but the density.
803324
It has to do with density and bouyancy. A apple is spread out and light, the molecules allow it to be lighter than the H20 molecules letting it float on the water. A grape is small and dense, the molecular structure sinks because the H2O molecules cannot support the weight.
8835
less dense... it is common sense the density of substances go from solid liquid to gas (most dense to least) neon is a gas thus it would be less dense than water which is a liquid
236798
The density of water is 1 gram/cubic centimeter.\nThe density of ice, due to hydrogen bonding, is .931\ngrams/cubic centimeter. Therefore the less dense mass\nof ice is "lighter" than the more dense mass that is water.\n\nWhy is this important? because if ice did find some sinister\nway to be heavier than water, i would not be able to crunch\nice when i drink my favorite beverage... that is until the\nbeverage is all gone, and by that time, i'm just out of the\nmood.