(a) List out any four points of difference between crystalline and amorphous solids. (b) A list of solids are given below:

Question

Based on the nature of order present in the arrangement of the constituent particles, solids are classified into two, crystalline and amorphous.

(a) List out any four points of difference between crystalline and amorphous solids.

(b) A list of solids are given below:

Quartz, glass, iodine, ice.

From this, identify crystal (s)

(i) having sharp melting point.

(ii) which is/are isotropic

Answer 1

(a)

 

Crystaline	Amorphous
(i) Long -range order (ii) Sharp melting point (iii) Newly formed surface is smooth (iv) Anisropic	(i) short - range order (ii) Range of melting point (iii) Newly formed surface is rough. (iv) Isotropic

(b) 

(i) Quartz, Iodine, Ice

(ii) Glass