Amorphous solids are materials that lack a well-defined, ordered structure. Unlike crystalline solids, which have a regular arrangement of atoms, amorphous solids have a random arrangement. This irregular structure gives them unique properties, such as varying degrees of transparency and flexibility. Common examples include glass and certain plastics. These materials do not have a specific melting point; instead, they gradually soften when heated. This behavior makes them useful in various applications, such as in the production of glassware and optical fibers. Their disordered nature also contributes to their ability to absorb shock and resist breaking.