Is glass a solid or a liquid? Real answers only- no opinions!!?
117364
I have heard that glass is a very viscous liquid.  A bit of evidence for this is that old cathedral windows tend to be very thin at the top, and thicker at the bottom, because the glass has flowed that way over the centuries.  I believe this bit of wisdom came from an art historian, though, as opposed to a physicist.  For a better discussion, look at the link below.
290836
Solid. Most elements at standard atmospheric temperature and pressure are solids. Some of the non-metals are gases, but only Mercury and Bromine are liquids at STP.\n\nEDIT: Gloo-gal, why answer if you don't know or don't care?
59308
Contrary to what some science teachers and tour guides may say, glass is NOT a "slow-moving liquid". That's an urban legend.\n\nMany years ago, the method of making glass panes involved spinning a glob of glass on a flat disk until the glass flattened, which caused the outside edge to be thicker than the center. When the disk of glass was cut into panes, one edge was always slightly thicker.\n\n"Estimates of the viscosity of glasses at room temperature run as high as 10 to the 20th power Scientists and engineers may argue about the exact value of that number, but it is doubtful that there is any real physical significance to a viscosity as great as that anyway. As for cathedral windows, it is hard to believe that anything that viscous is going to flow at all.\n\nIt is worth noting, too, that at room temperature the viscosity of metallic lead has been estimated to be about 10 to the11th power, poises, that is, perhaps a billion times less viscous-or a billion times more fluid, if you prefer than glass. Presumably, then, the lead caming that holds stained glass pieces in place should have flowed a billion times more readily than the glass. While lead caming often bends and buckles under the enormous architectural stresses imposed on it, one never hears that the lead has flowed like a liquid."\n-Dr. Robert Brill, Corning Museum of Glass\n\n\np.s. \n\n1. The more viscous a liquid, the higher its resistance to flow - not the other way around. \n\n2. It's "Newtonian", not "Neutonian".\n\n3. Although glass exhibits characteristics of both liquid and solid, it's categorized as an amorphous or "pseudo" solid.
930979
If you are talking about regular soda-lime glass, the reason why it is brittle is because its molecular structure resembles that of a liquid.  HOWEVER, it does not have a liquid structure.  Glass is composed of tetrahedral crystals.  That these crystals did not achieve regular, repeating crystalline structure does not mean glass is a permanent liquid.  My Glass Ceramics prof nearly shot me for saying that in class one day.\n\nBut that's exactly it:  Glass is brittle because it does not have good large-area orderly crystalline structure.  If it did, it would be like sheetmetal steel, where it dents and deforms instead of shattering.\n\nI would like to point out something else though:  The strongest fiber ever tested was a glass fiber drawn and tested in an inert atmosphere.  Also, you can take a glass fiber by the ends and bend it into a circle, much like any metal wire.  Hence it is elastic.  BUT if you touch that same fiber in several places, then try to bend it again it will shatter in your hands.
1031001
You could class them as soft solids, since they do not flow. They may be very viscous liquids... but solid is the closest definition.\n\nThe are not truley fluid {which means "gas or liquid" in Physics}, since I can put it in a bowl and it won't coat the bottom.
84127
No....glass is considered an amorphic substance. In other words, its structure looks the same in all directions from within the material.
979941
Completely exothermic. The atoms are losing energy to get to a solid state. Gases have most energy since they are free and unbonded to neighbouring molecules. Liquids have enough energy to stay together but still move about one another. In solids they have just enough energy just to vibrate about in a fixed point, closely bonded to neighbouring atoms. As you can there is an energy loss as you go from gas state to solid state. Loss of energy is exothermic.\n\nYes it is a reaction to change of heat.
32278
you bet.  the old "solid, liquid, gas" classification is about as accurate as saying "animal, vegetable or mineral".  many substances DO fit into these categories, but these days there are a lot of forms of matter that do not fit neatly into any of them.\n\nthere are multiple types of solids:\n-crystalline solids\n-polycrystalline solids\n-amorphous solids\n\nmultiple types of liquids:\n-plain ol' regular liquids\n-solutions\n-superfluids\n\nmultiple types of gases:\n-plain ol' regular gases\n-plasma (ionized gas)\n\nand there are a lot of unusual forms of matter that don't fall neatly into these categories:\n-colloids (suspensions of particles in a fluid)\n-gels\n-quantum condensates (bose-einstein or fermionic condensates)\n-supersolids\n-some exotic ones found in high-energy and astro- physics, like neutron condensates, quark-gluon plasma, degenerate matter and strange matter\n\nthere are also some other types of thermodynamic phases:\n-the various kinds of magnetism (ferromagnetism, ferrimagnetism, antiferromagnetism, paramagnetism) are considered thermodynamic phases\n-when a material becomes superconducting it involves a phase transition of the electrons in the material\n\nand certainly there are others.  all of this depends on how you define a "form of matter."\n\nwikipedia has a list, though it is not complete:\nhttp://en.wikipedia.org/wiki/Phases_of_matter\n\ncheers
438731
I'm really not sure but it seems as though a glass of soda with ice covers it...the gas is in the carbonation; the liquid is of course the soda itself, and the ice is the solid?
598488
Solid.  If the temperature is below the melting point, then it will be a solid.  Unless you want to get into changing pressures, or something.
780172
Teacher is wrong. This is a popular misconception, but the usually cited "proof", that old windows are thicker at the bottom, only proves that old glass was irregular in thickness. A smart glazier would install a pane thick edge down for better strength.\n\nEvidence to the contrary includes the fact that large telescope mirrors and lenses, which must be figured  to within less than 100 nanometers (4 micro-inches), maintain this figure indefinitely. Telescopes over 100 years old are still in use. Also, glass artifacts over 3000 years old still hold their shape.\n\nThis misconception arises because glass, being an amorphous, as opposed to crystalline solid, has no clearly defined melting point. However, at temperatures below the glass transition temperature, glass is most definitely solid. Actually, metals exhibit more "liquid" behavior than glass does, because they will creep under load, something glass does not do.
1032546
Glassy solids are considered amorphous solids.  An amorphous solid is a solid in which there is no long-range order of the positions of the atoms.  Common window glass is an amorphous ceramic.\n\nPerhaps you meant what is the difference between "rubbery" and "glassy" states?  The temperature at which there is a  transition between the glassy and rubbery states is called the glass transition temperature.  An amorphous material in the rubbery state is flexible.  In the glassy state, it is brittle.
648266
liquid? if u mean state of matter.
685755
Ice water.  Ice is the solid phase and the water is the liquid phase.
949274
in a liquid-they have no distinct order and move freely but cramped.\nin a solid-they are in a fixed position.\nin a gas-they move freely and are extremely active\nin plasma- they move like gasses and liquids
803008
1. MATTER - Anything that has Mass and takes up Space.\n\n2. MASS - The measurement of the amount of Matter in an object.  We use a Balance to determine Mass.\n\n3. Matter is Classified (divided) into FOUR STATES:\n\n    a. SOLID - Anything that has BOTH A DEFINITE VOLUME and a DEFINITE SHAPE.  A rock is a solid, solid matter can be picked up and carried around without having to place it in a special container.\n\n    b. LIQUID - Anything that has DEFINITE VOLUME but NO DEFINITE SHAPE.  A key property of a liquid is that they FLOW and can be POURED.\n\n    c. GAS - Has NO DEFINITE VOLUME and NO DEFINITE SHAPE.  A gas ALWAYS TAKES BOTH THE VOLUME AND THE SHAPE OF ANY CONTAINER INTO WHICH IT IS PLACED.  If a gas is NOT in a container, it will spread out as far as it can.\n\n    d. PLASMA - Has NO DEFINITE VOLUME OR SHAPE AND IS COMPOSED OF ELECTRICAL CHARGED PARTICLES.
53419
Answer 1:\n"Glasses" are amorphous solids, that is, they don't have a regular shape.\nEssentially the opposite of crystalline solids which have a defined shape.\nWhen you break a crystalline solid, it will give flat, well defined faces.\nCrystals melt or decompose at definite temps and the change from s to l\nis usually abrupt.  Glass (say window glass) will shatter into irregular\nfaces and curves.  There are many different kinds of glass and none really\nhave a melting point.  All pretty much have silicon dioxide as a principle\ningredient then something else added:  Here are some numbers...keep in mind\nthese are all SOFTENING  points and NOT melting points:\nsilica glass: 1580 Celsius   soda-lime glass: 695 C\nborosilicate glass: 820 C    aluminosilicate glass: 915 C\nleaded glass: 630 C\nWhat I'm trying to say is:  glass isn't a liquid.  It's a solid with so\nmany 'defects' that the order inherent in a crystal is absent.  When I\nsay defects, I'm talking at the molecular level, not physical scratches,\nand so on. You may want to recheck that 100 K number you presented.\nThat's 173 degrees Celsius below zero (-280 F)!\nAm I going to get some arguments about my stance?  I'll find out more\nfrom our resident glassblower here at the university.\n-Joe Schultz\n\nAnswer 2:\nI very much agree with J. Schultz's response...  Here are a couple\nof other observations:\nGlass is formed by melting silicon dioxide (SiO2) which has a\nmelting point of 1710 deg. C..  In its crystalline form, SiO2\nhas a very ordered structure with each Si atom bonded to 4 O atoms\nand each O atom attached to two Si atoms.  If the SiO2 is quickly\ncooled after being melted, the SiO2 "molecules" do not have a chance\nto get completely lined up in their solid crystalline form and thus\nan amorphous solid (glass) is formed.\nOften we like to categorize substances as gas, solid, or liquid..\nobviously, glass is somewhere between a solid and a liquid --\nsome scientists refer to it as a pseudo-solid\n-Dr. Brown