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Question

What are amorphous and crystalline solids??

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Solution

Amorphus solids refer to solid materials that do not exhibit any regular and definite arrangement of atoms and molecules in their crystal structure.

A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly, repeating pattern extending in all three spatial dimensions.



More details

Amorphous solids

Crystalline solids

1

Have irregular shape

1

Have definite characteristic geometrical shape

2

Have only short-range order in the arrangement of constituent particles

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Have long-range order in the arrangement of constituent particles

3

Gradually soften over a range of temperature

3

Have sharp and characteristic melting point

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When cut with a sharp-edged tool, they cut into two pieces with irregular shapes

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When cut with a sharp-edged tool, they split into two pieces with plain and smooth newly generated surfaces.

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Do not have definite heat of fusion

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Have definite and characteristic heat of fusion

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Isotropic in nature

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Anisotropic in nature

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Pseudo solids or super-cooled liquids

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True solids


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