is glass a liquid or a solid?

Think of ice. It's solid when frozen, liquid when melted. Same with glass. It's solid when hard, liquid when melted. It's like that with a lot of things.

Glasses are are state of matter that are often separated out due to their unusual properties. As stated already in terms of molecular bonding glasses are a liquid with an immensely high viscosity. Viscosity is a property of liquids that determines how fast it flows. Glass does indeed flow, very, very, very slowly. In old windows you can see that the glass is thicker on the bottom of the pain than on the top because over the course of 50 years or so the glass has flowed down towards the bottom.

likewise glass does not break evenly because it has no ordered crystal structure. You may ask how can a liquid break, but all your doing is separating the glass. just like I can take a drop of water and separate it into two drops instead of one. The difference with glass is that it flows so slowly that when you break the pieces apart they more or less stay the way you broke them for a long time. If you shattered a piece of glasss and let it sit for 20 or thirty years you'd see that the sharp edges had become rounded because the glass flowed like a liquid.

In terms of "melting" a glass; the glass is not actually melted. Instead as the glass is heated the viscosity within the glass is lowered making it flow more freely. Most people have witnessed this during breakfast. A cold bottle of maple syrup can be hard to pour because it has a resonably high viscosity (not nearly as high as glass though), heat that up though and it pours just like water. granted maple syrup is not a glass. I admit that, but the visual is used to emphasize the point. The more heat you add the lower the viscosity goes. When you work with glass you add the heat to get it to flow more freely.

To surmise my point. From a molecular standpoint glass is indeed a liquid, but from a practical everyday use standpoint it may as well be considered a solid because we certainly can't wait around for it to flow anywhere.

Glass is a solid, like ice is. Ice is a solid form of water, but is a solid until it is melted. Glass is a solid until melted as well.

Now if you take a glass bottle, fill it with water, then pour out the water, the water is a liquid pouring out, but the air pouring in is considered a liquid and not a gas, while pouring. This is because the air is inverse of the water, thus having liquid characteristics.

The answer, from a molecular dynamics perspective, is semantic... Using the same rules used to say that glass is a liquid could be applied to say our atmosphere is a liquid as well.

While this holds up in a purely scientific discussion about the difinition of solid, liquid, and gas, in practical terms it's probably best to say that anything that would break if you put your hand through it (versus move away) is solid.

It is a solid with the same structure (random) as a liquid.

Though glass appears as solid but it is actually a liquid. It is defined as the super cooled soln of metal silicates & aluminates.

Solid, its melted sand then it hardens to make glass

It's a solid. It's not a highly organized crystal though.

SOLid

it starts as a liquid