is glass a liquad or a solid?

Answer 1

An extremely viscous liquid

EDIT

I stand corrected, there actually IS a second transition. So it's an amorphous solid

Answer 2

In room temperature, glass is a solid. However, there is no clear answer to the question "Is glass liquid or solid?".

In terms of molecular dynamics and thermodynamics it is possible to justify various different views that it is a highly viscous liquid, an amorphous solid, or simply that glass is another state of matter which is neither liquid nor solid.
The difference is semantic. In terms of its material properties we can do little better. There is no clear definition of the distinction between solids and highly viscous liquids.

All such phases or states of matter are idealisations of real material properties. Nevertheless, from a more common sense point of view, glass should be considered a solid since it is rigid according to every day experience.
The use of the term "supercooled liquid" to describe glass still persists, but is considered by many to be an unfortunate misnomer that should be avoided.

In any case, claims that glass panes in old windows have deformed due to glass flow have never been substantiated. Examples of Roman glassware and calculations based on measurements of glass visco-properties indicate that these claims cannot be true. The observed features are more easily explained as a result of the imperfect methods used to make glass window panes before the float glass process was invented.


FYI,
The most viscous liquid is bitumen used to make roads... Takes about 7 yrs for it to drip a drop (if placed in a funnel).

Answer 3

It's similar to lead in that it's amorphous and, although classed as a solid, has a small degree of fluidity. Go into a church and find an old stained glass window, the glass will be thicker at the bottom where it has flowed due to the force of gravity.

Answer 4

Glass at room temperature (25 C/77 F) is a solid, since it will not readily conform to the shape of a container in which it is placed, however over time it can exhibit fluid characteristics. In Europe for example, the windows on some of the cathedrals, that have stood for centuries, are thicker at the bottom due to the forces of gravity causing the glass to flow downward.

Answer 5

As whether the state of an object is a liquid or a solid depends on the distance between the molecules, I would say that it is generally a solid.but has some properties of a liquid, i.e. it is able to flow, but in very small amounts. It's vicosity can be said to be extremely high.

Answer 6

All core materials on the Periodic Table other than Mercury can be solid, liquid and gas at different temperatures - although not at the same time.

So it's all 3, dependant on the temperature, I should think.

Answer 7

Glass is a liquid. If you look at very old glass on churches you can sometimes see how it has run to the bottom of the pane, so this is thicker than the top.

Answer 8

Glass is a solid

Answer 9

Sorry for saying but it should be liquid. Actually at room temprature (27 degrees celcius) it is solid. It melts at a temprature of 1100 degrees celcius.

Answer 10

i remember watching discovery channel once about glass. they say glass is a very slow moving liquid. i t is said that a glass window will be thicker at the bottom than the top in ten years...
that's what i remember anyway..
maybe i got some stuff wrong...