Standard glass is not classified as a/an_________________?
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Answer: C. Material with sharp definite melting point
Explanation
Standard glass is an amorphous solid that softens gradually over a wide temperature range rather than melting abruptly. Because it lacks a crystalline lattice, it does not possess a sharp, well-defined melting point like crystalline solids. Upon heating, glass transitions smoothly from a rigid solid to a viscous liquid without a latent heat of fusion. Glasses are fundamentally supercooled liquids frozen into a rigid, non-crystalline amorphous atomic structure. Silicon dioxide serves as the primary network former in standard soda-lime silicate glass compositions. Modifiers such as sodium oxide and calcium oxide are added to lower the melting temperature and improve workability.
Standard glass is indeed classified as an amorphous isotropic material due to its uniform properties in all directions. Glasses are widely recognized in physical chemistry as supercooled liquids possessing high structural viscosity. Glass exhibits excellent dielectric strength, making it a reliable electrical insulator for numerous engineering applications.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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