it is because a crystalline is the solid material and an amorphous is the same
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Crystalline solids have a well-ordered arrangement of atoms or molecules in a repeating pattern, whereas amorphous solids lack a long-range order and have a random arrangement of atoms or molecules. This difference leads to variations in properties such as melting point, transparency, and mechanical strength between the two types of solids.
Amorphous solids do not have a regular repeating structure at the atomic level, resulting in a lack of long-range order, while crystalline solids have a well-defined, repeating atomic arrangement. Amorphous solids exhibit properties like isotropy and lack a sharp melting point, in contrast to crystalline solids that have distinct melting points and crystal structures.
Crystalline solids have an ordered and repeating atomic structure, resulting in a specific geometric arrangement of atoms. In contrast, amorphous solids lack a defined long-range order and have a disordered atomic structure with no specific pattern. This difference in atomic arrangement leads to variations in physical properties such as melting point and transparency.
An amorphous solid doesn't contain any crystal.
Diamonds are very hard, and graphite is very soft.
Crystalline solids have a highly ordered and repeating atomic structure, while amorphous solids lack a regular arrangement of atoms. Crystalline solids have a distinct melting point, while amorphous solids soften gradually over a range of temperatures.