A solid is one of the fundamental states of matter in which molecules or atoms are closely bound together by strong intermolecular forces, resulting in a fixed shape and a definite volume that does not easily deform under external pressure. Unlike liquids or gasses, solids possess mechanical strength and rigidity because their particles vibrate in place rather than flowing freely. Materials science further classifies solids into crystalline substances with orderly atomic lattices and amorphous substances like glass.
1 votes
Marked as accepted