A crystalline solid differs from an amorphous solid in that a crystalline solid
- A. has a long range ordered arrangement of particles and a sharp melting point
- B. has no definite shape
- C. softens gradually over a range of temperature
- D. is always transparent
Explanation
In a crystal every particle occupies a regular repeating position, so all the bonds are identical and break at one definite temperature, giving a sharp melting point. An amorphous solid such as glass or rubber has only short range order and therefore softens over a range instead. Glass is sometimes called a supercooled liquid for exactly this reason.
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