Crystalline solids and Amorphous solids.

Solids have properties like rigidity a definite shape and a define volume. If intermolecular forces are greater than thermal energy, substances exist as solid. Solids can be classified into two types. Crystalline solids and amorphous solids, Crystalline solids have regular arrangement of particles, definite geometric shapes, sharp melting points and definite heat of fusion. They are anisotropic and undergo clean cleavage. On the other hand, amorphous solid have no regular arrangement of particles, irregular shapes, melt over a range of temperature, no definite heat of fusion. They are isotropic and undergo irregular cleavage. The melting point of crystalline solids is sharp due to:

Solids have properties like rigidity a definite shape and a define volume. If intermolecular forces are greater than thermal energy, substances exist as solid. Solids can be classified into two types. Crystalline solids and amorphous solids, Crystalline solids have regular arrangement of particles, definite geometric shapes, sharp melting points and definite heat of fusion. They are anisotropic and undergo clean cleavage. On the other hand, amorphous solid have no regular arrangement of particles, irregular shapes, melt over a range of temperature, no definite heat of fusion. They are isotropic and undergo irregular cleavage. Solid X is very hard, electrical insulator in solid as well as molten state and melts at extremely high temperature. Name the type of solid is it?

Give examples of (1) Crystalline solids (2) Amorphous solids.

Crystalline solid are

Crystalline solids have

Amorphous solids are

What is the principle differnece between crystalline and amorphous solids? {:("Crystalline solids", "Amorphous Solids"), ("(a) ionic bonding","Covalent bonding"), ("(b) Higher molar masses", "Lower molar masses"), ("(c) Stoichiometric solids", "Non-stoichiometric solids"), ("(d)Long-range order", "Lack of long-range order"):}