Incorrect statement among the following about amorphous solids is -
| 1. | On heating they may become crystalline at a certain temperature. |
| 2. | They may become crystalline on keeping for a long time. |
| 3. | Amorphous solids can be moulded by heating. |
| 4. | They are anisotropic in nature. |
HINT: Amorphous solids are isotropic in nature.
Explanation:
Amorphous solid, any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel.
Amorphous solids are isotropic in nature because it has no long-range order and any physical property will be same on all direction.
On the other hand, anisotropic nature is a characteristic feature of crystalline solid.
They may become crystalline at some temperature. Some glass objects from ancient civilizations are found to become milky in appearance because of some crystallization.
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