Topic 5 Cersmics Composites Wmd Polymers

Question 1

What are ceramics

Answer 1

Nonmetal size with high melting points that arent made from carbon-based compounds

Question 2

What can ceramics made of

Answer 2

Clay

Question 3

What is clay

Answer 3

A soft material when is dug up from the ground so can be moulded into different shapes

Question 4

What happens to Clay when is fired at high temperatures

Answer 4

Hardens to form clay ceramic

Question 5

What is clay ideal for

Answer 5

Pottery and bricks

Question 6

What is another example of a ceramic

Answer 6

Glass

Question 7

What is glass generally

Answer 7

Transparent and can be moulded when hot and brittle when thin

Question 8

What is soda lime glass made from

Answer 8

By heating a mixture of limestone sand and sodium carbonate until it melts

Question 9

What is borosilicate glass

Answer 9

Another glass with a high melting point

Question 10

How is borosilicate glass made

Answer 10

A mixture of sand and boron trioxide

Question 11

What are composites

Answer 11

One material embedded into another

Question 12

Fibres or fragments of a material known as reinforcements are surrounded by what

Answer 12

A matrix acting as a binder

Question 13

What are the properties of a composite depend on

Answer 13

What it is made from

Question 14

Fibreglass and its properties

Answer 14

Consist of fibres of glass embedded in a matrix made of a polymer (plastic)
Has a low density like plastic but he’s very strong like glass

Question 15

What is fibreglass used for

Answer 15

Skis boats and surfboards

Question 16

Carbon fibre and its properties

Answer 16

Have a polymer matrix the reinforcement
is either made from long chains of carbon atoms bonded together (carbon fibres )
or from carbon nanotubes
these composite a very strong and light so I use an aerospace and sports car manufacturing

Question 17

Concrete and its properties

Answer 17

Is made from aggregate (a mixture of sand and gravel) embedded in cement
Is very strong which makes it useful as a building material

Question 18

Wood and its properties

Answer 18

Natural composite of cellulose fibres how together by an organic polymer matrix

Question 19

What two things influence the properties of a polymer

Answer 19

How it is made and what it is made from

Question 20

What are the properties of poly ethene depend on

Answer 20

The catalyst that was used in the reaction conditions ( temperature and pressure) that it was made under

Question 21

What is low-density polyethylene made from

Answer 21

Ethan at a moderate temperature under high pressure is it is flexible and used for bags and bottles

Question 22

What is high-density polyethylene made from

Answer 22

Ethan but at a lower temperature and pressure with a catalyst it’s more rigid and use for water tanks and drain pipes

Question 23

What are the monomers that a polymer is made from determine

Answer 23

The type of bonds that form between the polymer chains

Question 24

What are thermosetting polymers

Answer 24

Contain monomers that conform cross links between the polymer chains hole in the cheese together in a solid structure unlike Thermo softening polymers these polymers don’t soften when heated Thermo Setting polymers are strong hard and rigid

Question 25

What are Thermo softening polymers

Answer 25

Contain individual polymer chains in together with weak forces between the chains you can Maltese plastics and remould them