Propperties Of Materials

Question 1

Wood (timber )

Answer 1

Soft wood and hard wood and manufactured boards

Question 2

Hardwood e.g

Answer 2

Oak
Mahogany
Beech
Walnut
Elm
Teak
Balsa

Question 3

Soft wood e.g

Answer 3

Line
Redwood
Spruce
Cedar

Question 4

Manufactured board e.g

Answer 4

Ply wood
Chipboard
Mdf
Osb
Hard board

Question 5

Mdf board

Answer 5

Sawdust is mixed with resin and compressed under heat it is cheaper than hardwood and easy to cut won’t split

Question 6

Chipboard

Answer 6

Uses wood chips and resin compressed under heat

Question 7

Hard board

Answer 7

Fibers of wood are mixed with resin compressed under heat

Question 8

Ply wood

Answer 8

Ply is stacked layers of birch in opposite directions the grain to get uniform strength

Question 9

Block board

Answer 9

Strips of timber stuck to together for strength

Question 10

Metals

Answer 10

Alloys
Non ferrous
Ferrous

Question 11

Ferrous metals

Answer 11

Are magnetic and rust

Question 12

Non ferrous metal

Answer 12

Found in the ground don’t contain iron and tarnish

Question 13

Alloys

Answer 13

Mixture of two or more metals e.g pewter tin and copper

Question 14

E.g of non ferrous metals

Answer 14

Iron
Steel
Cast iron

Question 15

E.g ferrous metals

Answer 15

Aluminium
Lead
Copper
Zinc
Tin

Question 16

E.g alloys

Answer 16

Stainless steel
Brass
Solder
Bronze

Question 17

Plastic

Answer 17

Thermo plastic
Thermos plastic setting (thermosets)

Question 18

Thermo plastic is

Answer 18

Can be melted and re shaped
Like ice heated set into shape and reformed

Question 19

Thermo plastic example

Answer 19

Polyethylene (LDPE/HDPE)
Polystyrene ( PS)
Polypropylene (PP)

Question 20

Thermo setting plastic is

Answer 20

Can be heated and shaped if re heated can’t be reformed just burns and cross link appears

Question 21

Thermo setting plastic example

Answer 21

Polyester
Urea formaldehyde
Melamine formaldehyde
Epoxy resin

Question 22

HDPE

Answer 22

high density polyethylene buckets

Question 23

PVC

Answer 23

Polyvinyl chloride guttering

Question 24

PET

Answer 24

Polyethylene under shop water bottles

Question 25

LDPE

Answer 25

Low density polyethylene Tesco plastic bags that break

Question 26

pP

Answer 26

Polypropylene Tic tac box

Question 27

PS

Answer 27

Polystyrene Biscuit tray

Question 28

Urea formaldehyde

Answer 28

Is like resin example of it is light switches not always clear more expansive than thermoplastic