How does amorphous silica differ from quartz?

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Solution

Difference Between Amorphous Silica and Quartz
Amorphous Silica Quartz
In amorphous silica, ${SiO}_{4}$ tetrahedra are randomly joined to each other. In Quartz, ${SiO}_{4}$ tetrahedra are linked in a regular manner.
They do not have particular melting point. They have a Sharp melting point.
They are isotropic in nature. They are anisotropic in nature.
They are considered as Pseudo solid. They are considered as True solid.
They are less rigid. They are more rigid.
They have short range order. They have long range order.

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Amorphous Silica	Quartz
In amorphous silica, ${SiO}_{4}$ tetrahedra are randomly joined to each other.	In Quartz, ${SiO}_{4}$ tetrahedra are linked in a regular manner.
They do not have particular melting point.	They have a Sharp melting point.
They are isotropic in nature.	They are anisotropic in nature.
They are considered as Pseudo solid.	They are considered as True solid.
They are less rigid.	They are more rigid.
They have short range order.	They have long range order.