Glass and Ceramic

Glass and Ceramic

9.2

Glass and Ceramic

1. Glass is made of silica

contains silicon oxide

2. Type of glass

Glass and composition	Properties
Fused silica glass Silica	Resistant to heat Chemically inert
Soda-lime glass Silica Calcium carbonate Sodium carbonate	Low melting point Easy to shape
Borosilicate glass Silica Boron oxide Sodium oxide Aluminium oxide	High resistance to heat and chemicals compared to soda-limed glass
Lead crystal glass Silica Lead(II) oxide Sodium oxide	Low melting point High refractive index

3. Ceramic is made of clay

It is main component in clay is aluminium silicate
Can withstand high temperature and high pressure
Good insulator of heat and electricity

4. Application of glass

Applcation of glass	Explanation
Laboratory apparatus	Made of borosilicate glass High resistance to heat and chemicals
Bulb	Made of soda-lime glass Resistance to heat Easily to shape
Glass prism	Made of lead crystal glass High refractive index
Transparent glass window	Allows light to enter the house

5. Application of ceramic

Application of ceramic	Explanation
Tableware	Resistance to heat Resistance to corrosion
Dentures	High hardness Inert to chemical
Ceramic tiles	Sparkling property Make the floor look clean and nice
Ceramic flower pot	Hard Strong