Ceramics And Composites

Question 1

Types of glass

Answer 1

Soda lime glass- windows
Borosilicate glass- cookware

Question 2

What’s soda lime make from

Answer 2

• Sand (SiO2)
• Limestone (CaCO3)
• Soda (Na2CO3)

Question 3

Describe borosilicate

Answer 3

• made from sand (SiO2) and boron trioxide (B2O3)
• has a higher melting point than soda-lime glass and is used for ovenware and test tubes

Question 4

Properties of both glasses

Answer 4

• hard
• transparent
• electrical insulator

Question 5

Difference of the glasses

Answer 5

Borosilicate melts at a higher temperature

Question 6

How to make ceramics

Answer 6

By heating wet clay in a furnace

Question 7

Describe clay

Answer 7

• hard, brittle, insulators which are unreactive.
• contains ionic metal compounds and covalently bonded non metal molecules

Question 8

Describe a composite

Answer 8

• composed of at least two different types of material.
• properties of the finished object depend on a combination of the properties of the materials combined to make them

Question 9

How to make a composite

Answer 9

• made of a matrix (or binder) of one material surrounding fibres or fragments of another material = process called reinforcement

Question 10

Describe reinforced concrete

Answer 10

• contains a steel mesh embedded in the concrete
• concrete provides compressive strength

Question 11

How to make soda lime glass

Answer 11

Mix sand, sodium carbonate and limestone
Heat mix in a furnace until it melts
When it cools it solidifies into any shape we want

Question 12

Dis of making soda lime glass

Answer 12

Low melting point
= limits it’s uses

Question 13

Describe borosilicate glass

Answer 13

Higher melting point than soda lime glass
= more useful for objects that require heating eg kitchenware

Question 14

How to make borosilicate glass

Answer 14

Melting a mixture of sand and boron trioxide

Question 15

Adv of carbon fibre composite

Answer 15

Very strong and light
= useful for aircraft’s or car parts