Distinguish between crystalline solid and amorphous solid.
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↪Crystalline & Amorphous Solid↩
● Crystals have an orderly arrangement of their constituent particles.
● In comparison, amorphous solids have no such arrangement.
● Crystals are also known as True Solids, Whereas another name for Amorphous Solids is Super-Cooled Liquids.
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Answer:AMORPHOUS SOLIDS:
- the solids which have no definite geometric shape are called amorphous solids
- they do not have regular arrangement of atoms, ions or molecules. therefore , they may be called as super-cooled liquids
- they do not posses sharp melting point. they are soft on heating.
- these have indefinite heats of fusion
- they are called pseudo solids
- they do not have water molecules
- they soften on heating and ultimately become mobile over a wide range of temperature.
Examples: glass, rubber, plastic etc
CRYSTALLINE SOLIDS:
- the solids which have a definite regular and three- dimensional geometric shape are called crystalline solids e.g NaCl has cubic shape.
- they have complete regular arrangement of atoms, ions and molecules.
- they posses sharp melting point
- they have definite heat of fusion
- they are called true solids
- they may have water in their crystals called water of crystallization.
- they do not soften on heating . instead they melt at a fixed temperature.
- Examples: diamond, NaCl etc.
Explanation:
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