Edited sentence: A common example of a solid is the solid form of water, ice.Many solids, like rocks and concrete, have very high hardness and rigidity and will tend to break or shatter when subject to various forms of stress, but others like steel and paper are more flexible and will bend.Solids are characterized by a tendency to retain their structural integrity; if left on their own, they will not spread in the same way gas or liquids would.Solids are often composed of crystals, glasses, or long chain molecules (e.Some solids are amorphous such as glass.rubber and paper)