Glass, however, is actually neither a liquid—supercooled or otherwise—nor a solid. It is an amorphous solid

—a state somewhere between those two states of matter. And yet glass's liquidlike properties are not enough to explain the thicker-bottomed windows, because glass atoms move too slowly for changes to be visible.

Is glass a solid object?

In reality, glass isn't a liquid at all. It's a special kind of solid known as an amorphous solid. This is a state of matter in which the atoms and molecules are locked into place, but instead of forming neat, orderly crystals, they arrange themselves randomly.

Why glass is considered a solid?

Glass is a solid. It has a definite shape and volume. It does not flow. Specifically, it is an amorphous solid because the silicon dioxide molecules are not packed in a crystal lattice.