Question

Which of the following statement(s) is/are correct regarding amorphous solids:

• A. Do not have sharp melting points
• B. Are isotropic
• C. Have same mechanical strength, electrical and optical properties in all directions
• D. Lack of long range order

Answer 1

Answer: (A), (B), (C), (D)

Lack of long range order

Amorphous solids, lacking the three-dimensional long-range order of a crystalline material, possess a more random arrangement of molecules, exhibit short-range order over a few molecular dimensions, and have physical properties quite different from those of their corresponding crystalline states.
An amorphous solid does not have a sharp melting point but melts over a range of temperatures. For example, glass on heating first softens and then melts over a temperature range. Glass, therefore, can be moulded or blown into various shapes.
Amorphous Solid does not have a long-range order of arrangement of their constituent particles. However, they may possess small regions of orderly arrangement.