| Crystalline solid | Amorphous solid |
| 1. Solids which have regular orderly arrangements of constituent particles (Long range order) | 1. Solids which have irregular arrangement of constituent particles Short range order |
| 2. They have sharp melting point. | 2. They melt over a range of temperature. |
| 3. They give regular structure on cleavage. | 3. They give irregular structure on cleavage. |
| 4. They are anisotropic, i.e. ; they have different optical and electrical properties in different directions due to different arrangements of particles in different directions. | 4. They are isotropic, i.e. ; the value of physical properties is same in all directions due to irregular arrangement in all directions. |
| 5. They have high and fixed heat of fusion. | 5. They do not have fixed heat of fusion. |
| 6. Diamond, Graphite, NaCl, Metal (Fe, Cu, Ag etc) ice. | 6.Glass,rubber,plastics, Quartz glass |
