Engineering Board Exam Reviewer · Engineering Materials · easy

A solid that lacks long-range atomic order, such as glass, is called:

1. Polycrystalline
2. Single crystal
3. Isotropic crystal
4. Amorphous (noncrystalline)

Answer

D. Amorphous (noncrystalline)

Solution

Amorphous materials soften over a temperature range rather than melting sharply.

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