Metals

Question 1

What are the properties of aluminium?

Answer 1

Soft, greyish-white, malleable metal that is conductive to heat and electricity that can be welded and is corrosion resistant

Question 2

What are the properties of copper?

Answer 2

Red, tough, ductile metal that is an excellent conductor in electricity and is corrosion resistant

Question 3

What are the properties of brass?

Answer 3

Very corrosive, yellow metal that tarnishes easily and is harder than copper. Good conductor in electricity

Question 4

What are the properties of lead?

Answer 4

Soft, shiny, bright and malleable metal when new, but turns dull grey when oxidised. Resistant to corrosion

Question 5

What are the properties of zinc?

Answer 5

Bluish-white metal that has a layer of oxide that protects it from corrosion

Question 6

What are the properties of tin?

Answer 6

White and soft metal that is resistant to corrosion

Question 7

What are the uses of aluminium?

Answer 7

Aircrafts, boats, window frames, saucepans, packaging and insulation, pistons and cranks

Question 8

What are the uses of copper?

Answer 8

Electrical wires, cables and conductors, water and central heating pipes, printed circuit board

Question 9

What are the uses of brass?

Answer 9

Castings, ornaments, valves, forgings

Question 10

What are the uses of lead?

Answer 10

Protection against X-rays, roof coverings, paints, flashings

Question 11

What are the uses of zinc?

Answer 11

Making brass, tanks, buckets, rust-resistant paint

Question 12

What are the uses of tin?

Answer 12

Making bronze, tinplate

Question 13

What are the properties of mild steel?

Answer 13

Tough, high tensile, ductile metal that cannot be hardened or tempered because of its low carbon content. It must be case hardened.

Question 14

What are the properties of high speed steel?

Answer 14

Can be hardened or tempered, retains hardness in high temperatures

Question 15

What are the properties of stainless steel?

Answer 15

Resistant to corrosion

Question 16

What are the properties of high tensile steel?

Answer 16

Very strong and very tough

Question 17

What are the properties of high carbon steel?

Answer 17

Strongest of the carbon metals. Less ductile, tough and malleable

Question 18

What are the properties of medium carbon steel?

Answer 18

Stronger and harder than mild steel. Less tough, ductile and malleable

Question 19

What are the properties of cast iron?

Answer 19

Hard, brittle, strong, cheap, self-lubricating metal

Question 20

What are the uses of mild steel?

Answer 20

Plates, nuts and bolts, general purpose

Question 21

What are the uses of high speed steel?

Answer 21

Cutting tools for lathes

Question 22

What are the uses of stainless steel?

Answer 22

Kitchen draining boards, pipes, cutlery, aircraft

Question 23

What are the uses of high tensile steel?

Answer 23

Gears, shafts, engine parts

Question 24

What are the uses of high carbon steel?

Answer 24

Chisels, drills, hammers, files, lathe tools, taps and and dies

Question 25

What are the uses of cast iron?

Answer 25

Heavy-crushing machinery, car cylinder blocks, vices, machine tool parts, brake drums, machine handle and gear wheels

Question 26

What are the uses of medium carbon steels?

Answer 26

Metal ropes, garden tools, springs, wires