40. Glass is (a) Supercooled liquid (b) Crystalline solid (c) Amorphous solid (d) Liquid crystal
amorphous solid 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
