SOLIDS br Solids are those substances which are rigid, hard, have definite shape and definite volume. br Types of Solids: br 1. Crystalline Solids br 2. Amorphous Solids br Properties of Crystalline Solids br 1. Geometrical Shape br 2. Melting Points br 3. Cleavage Planes br 4. Anisotropy br 5.