How glass is made from raw materials

Glass is made using three different minerals:

1. Sand (silica) - intense heat changes sand into a fragile form of glass.

2. Soda ash (sodium carbonate) - this is a powdery white material that is added to the mixture to lower the melting temperature of the sand.

3. Limestone (calcium carbonate) -
this is added to make the glass stronger.

Click on Forward to continue.