How are gla

There are different types of glasses. The different constituents are used for their manufactures.

i. Soda lime glass/Soda glass/Soft glass

Constituents used in the manufacture:

a) Silicon dioxide (SiO₂)

b) Calcium carbonate (CaCO₃)

c) Sodium carbonate (Na₂CO₃)

ii. Hard glass

Constituents used in the manufacture:

a) Silicon dioxide (SiO₂)

b) Potassium carbonate (K₂CO₃)

c) Calcium carbonate (CaCO₃)

iii. Borosilicate glass

Constituents used in the manufacture:

a) Boron oxide (B₂O₃)

b) Aluminum oxide (Al₂O₃)

c) Silicon dioxide (SiO₂)

iv. Find glass/Optical glass/lead glass

Constituents used in the manufacture:

a) Silicon dioxide (SiO₂)

b) Potassium carbonate (K₂CO₃)

c) Lead oxide (PbO)

The raw materials needed for hard glass and borosilicate glass are:

For hard glass: Silicon dioxide (SiO₂), potassium carbonate (K₂CO₃), calcium carbonate (CaCO₃)

For borosilicate glass: Boron oxide (B₂O₃), aluminium oxide (Al₂O₃), silicon dioxide (SiO₂)