Extraction And Uses Of Metals

Question 1

Method to extract metal less reactive than carbon

Answer 1

React carbon with ore to so carbon displaces metal leaving it in its pure form

Question 2

Method to extract metal more reactive than carbon from ore

Answer 2

Electrolysis ( or displacement reaction with more reactive metal )

Question 3

Uses of aluminium and its properties

Answer 3

Aircrafts & cans - low density/resists corrosion
Power cables - conducts electricity/ductile
Pots and pans - low density/ strong (when alloyed)/ good conductor of heat

Question 4

Uses and properties of copper

Answer 4

Electrical wires - very good conductor of electricity
Pots & pans - very good conductor of heat/ unreactive / malleable
Water pipes - unreactive/ malleable
Surfaces in hospitals - antimicrobial properties / malleable

Question 5

Uses and properties of iron

Answer 5

Buildings - strong
Saucepans - conducts heat / high melting points / malleable

Question 6

Uses and properties of mild steel

Answer 6

Iron mixed with 0.25% carbon

Used for nails, car bodies, ship building and girders

Properties: strong and malleable. Rusts easily

Question 7

Uses and properties of high carbon steels

Answer 7

Iron mixed with 0.6 - 1.2% carbon

Used for cutting tools and masonry nails

Properties: harder than mild steel but more brittle

Question 8

Uses and properties of stainless steel

Answer 8

Iron mixed with chromium and sometimes nickel

Used from cutlery, cooking utensils, kitchen sinks

Properties: forms a strong, protective oxide layer so is very resistant to corrosion