give classification of solid
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.A crystalline solid is a substance whose constituent particles possess regular orderly arrangement e.g. Sodium chloride, sucrose, diamond etc.
An amorphous solid is a substance whose constituent particles do not possess a regular orderly arrangement e.g. glass, plastics, rubber, starch, and proteins.
Though amorphous solids do not possess long range regularity, in some cases they may possess small regions of orderly arrangement. These crystalline parts of an otherwise amorphous solid are known as crystallites.
An amorphous solid does not possess a sharp melting point. It undergoes liquefication over a broad range of temperature.
The amorphous solid do not possess any characteristic heat of fusion.
When an amorphous solid is cut with the help of sharp edged knife it results in an irregular cut.
Amorphous substances are also, sometimes, referred to as super cooled liquids because they posses disorderly arrangement like liquids. In fact many amorphous solids such as glass are capable flowing. Careful examination of the window panes of very old houses reveals that the panes are thicker at the bottom than at the top because the glass has flown under constant influence of gravity.
An amorphous solid is a substance whose constituent particles do not possess a regular orderly arrangement e.g. glass, plastics, rubber, starch, and proteins.
Though amorphous solids do not possess long range regularity, in some cases they may possess small regions of orderly arrangement. These crystalline parts of an otherwise amorphous solid are known as crystallites.
An amorphous solid does not possess a sharp melting point. It undergoes liquefication over a broad range of temperature.
The amorphous solid do not possess any characteristic heat of fusion.
When an amorphous solid is cut with the help of sharp edged knife it results in an irregular cut.
Amorphous substances are also, sometimes, referred to as super cooled liquids because they posses disorderly arrangement like liquids. In fact many amorphous solids such as glass are capable flowing. Careful examination of the window panes of very old houses reveals that the panes are thicker at the bottom than at the top because the glass has flown under constant influence of gravity.
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Depending on orderly arrangement of the constituent particles, the solids are classified into two types:
(1) Crystalline solids. For example, diamond, NaCl, KSO4. ete.
(2) Amorphous solids or non-crystalline solids.
For example, tar, glass, plastics, rubber, butter, etc.
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