| Property |
Crystalline solids |
Amorphous solids |
| Shape |
Definite characteristic geometrical shape |
Irregular shape |
| Melting point |
Melt at a sharp and characteristic temperature |
Gradually soften over a range of temperature |
| Cleavage property |
When cut with a sharp edged tool, they split into two pieces and the newly generated surfaces are plain and smooth |
When cut with a sharp edged tool, they cut into two pieces with irregular surfaces |
| Heat of fusion |
They have a definite and characteristic enthalpy of fusion |
They do not have definite enthalpy of fusion |
| Anisotropy |
Anisotropic in nature |
Isotropic in nature |
| Nature |
True solids |
Pseudo solids or super cooled liquids |
| Order in arrangement of constituent particles |
Long range order |
Only short range order |
