is glass a solid or liquid?
87050
This question has been beaten to death here.  Proponents of the "glass is a liquid" theory point to old window glass which seems to have become thicker on one edge.  This is simply urban legend, perpetuated by teachers who don't know any better.  \n\nIF a material with the extremely high viscosity of glass flowed, then the materials holding the glass in the frame (lead, in the case of stained glass windows in old cathedrals) would also have flowed, but much more, since they have much lower viscosity - and this just hasn't happened.  The glass is simply thicker in some parts due to the manufacturing process used.\n\nAnd glass is NOT a supercooled liquid; although it doesn't exhibit a first order phase transition, it DOES exhibit a second order transition between the supercooled liquid state and the glass state.\n\nBy definition, glass is an amorphous solid.\n\n1.   "A glass is an amorphous solid which exhibits a glass transition"\n2. "A solid is a material whose shear viscosity exceeds 10^14.6 poise" \n\nEstimates of the viscosity of glasses at room temperature run as high as 10 to the 20th power.\n\nAnd my favorite debunking page: http://tafkac.org/science/glass.flow/amorphous_solid_more.html
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.
18016
Since solids do not flow, then no for most.  Although, not all solids are the same.  Looking at amorpheous solids such as glass and newer metals that were supercooled as a liquid.  Glass has an extremely high viscocity because it is a liquid that is flowing really slowly.  If you look at the case of the cathedrals built in the old times, glass is thicker as it is closer to the ground.
771649
Do you mean supercooled substances?\n\nIf so, glasses are the best example and are made by melting a salt and quickly cooling it so that it does not return to its original form.  I don't believe you should have any trouble pointing out the various contributions of glass to our lives.
646733
glass has the property to transmit light from one side to the other side of it. other objects stop the light..or atleast do not pass the light fully.. thats why glass is tranparent to the other side
57967
a sol is colloid in which solid is dispersed in liquid.
422003
it's not that easy to define a "liquid" in a conventional way: take for example the glass for windows, it has its own volume and shape so we would define it a solid, but its microscopic disordered structure would make us call it a liquid! If we could wait ages we would see it flowing (as they say it happens for the windows in Chartres Cathedral.\nSo in material science liquid is a system that on ordinary observation time scale (years) shows a viscosity (the property of flowing  eg water is less viscous than honey) below 10^12 Pa*s
873092
Matter can exist in either a liquid, solid, or gaseous state.  \nA) Iron nail is a solid\nB) Gasoline is a liquid unless you are speaking of the fumes that can be seen or smelled and then it is a gaseous state.
199390
When you think of a liquid, you think of water and something that is free flowing.  It generally takes the shape of the container.  The molecules are held together through "loose interactions."  Amorphous solids differ because they are not quite solid, but can still have molecular mobility like a fluid.  I am not sure what background knowledge you have about polymers, glass transition temperatures, and amorphous solids, but i will try to explain.  Amorphous solids have molecular mobility that is dependent on the glass transition temperature of the compound.  Take a plastic bucket, at room temperature it appears hard if you bend it, it may crack and break.  If you leave that bucket outside, then it heats up and become bendable and flexible.  That is because it is above its glass transition temperature.  Amorphous also differ in the fact that you may not have content uniformity in the system either.  In other words, a liquid is the same no matter where you sample, but an amorphous sample may have areas that differ in composition.  Both have no cyrstalline structure which is important too.  I hope this helps... there are books that talk about this subject and i hope the links below give you some more insight.
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.
266559
Ignore First L.\n\nI don't think you can tell directly from the periodic table what is solid/liquid/gas. Typically the noble gases are, well, gases.
116361
It depends on the temperature at which you are talking about. At room temp glass is a solid. However, at a high enough temperature, glass can be in liquid form, much the same way that ice melts into liquid. It just takes a lot more heat. To clarify from one of the other responses, it is liquid as long as it is in it's liquid phase. Steel is still called steel, even when it is molten enough that it's flow properties are similar to that of water. However, as we interact with steel and glass it is in it's solid phase.
152501
You really should write a more detailed question.  But I think you're asking "why do things melt and boil?"\nA solid will convert into a liquid when the Intermolecular forces are over come by the raising average Kinetic engery(Temperature) and then it boils when those forces are over come enough to break away and become a gas.
804951
Solid- molecules move slowly, can not be compressed, do not take the shape of their container.\nLiquid- molecules slide past one another, can not be compressed and take the shape of their container.\nGas- molecules move in a rapid, random motion, can take the shape of their container and can be compressed
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
948057
Room temperature Seems like a trick question to to unless they are asking what physical state it is in at room temperature then that would be solid
364066
solid-most dense\nliquid-middle dense\ngas- least dense