Composition of glass and its usage

Question 1

State the characteristics of glass

Answer 1

• transparent
• chemically inert
• brittle
• waterproof (impermeable)

Question 2

State the types of glass

Answer 2

• Fused Silica glass
• soda lime glass
• lead crystal glass
• borosilicate glass

Question 3

State the characteristics of lead crystal glass and its usage.

Answer 3

• have high refractive index
• low melting point
• high density
• Use of decorations
• glass prism

Question 4

State the characteristics of fused silica glass and usage

Answer 4

• glass does not contract of expand during drastic change in temperature.
• Heat resistance
• chemically inert
• not malleable
• transparent to infrared ray
• use for telescope
• optical lens

Question 5

What glass has the lowest melting point. What is the usage of the glass stated?

Answer 5

• Soda lime glass
• cracks easily when temperature changes drastically
• low resistant to chemical
• glass containers.

Question 6

What are the characteristic of borosilicate glass?

Answer 6

• high melting point and resistant to heat
• does not crack easily at high temperature
• transparent to UV ray
• low expansion coefficient
• Laboratory glassware
• cooking utensils

Question 7

What are the physical and chemical characteristic of ceramic?

Answer 7

• opaque
• electrical insulator
• chemically inert
• porous
• brittle
• high thermal resistance
• high and strong ( resistant to compression)

Question 8

What is ceramic compose of?

Answer 8

• inorganic substances
• non metallic substances
• metalloid compounds

Question 9

There are 2 types of ceramic, the

• traditional ceramic
• advance ceramic

state the differences in terms of characteristics between both of these ceramics

Answer 9

Traditional ceramic
- made of clay and natural resources (kaolin)

Advance ceramic

• made of inorganic compounds
• has high resistance to heat
• more chemically inert
• more superconductivity property

Question 10

Why is traditional ceramic important?

Answer 10

1) Building materials
- can withstand high compression

2) Cooking utensils
- chemically inert
- withstand high temperature

Question 11

State the importance of advance ceramic.

Answer 11

1) Medical field
- chemically inert
- non brittle
- resistance to friction

2) Catalyst in reduce pollution