Extraction Of Metals

Question 0

What type of reaction extracts iron

Answer 0

Reduction reaction/ displacement reaction

Question 1

What is an ore

Answer 1

A rock which contains enough of a metal for it to be economically viable for it to be extracted - a metal combined with other elements usually oxygen

Question 2

Raw materials needed for this and what each is used for etc

Answer 2

Haematite - most common type of iron ore (iron 3 oxide (Fe2O3) and some sand)
Coke - made from pure carbon (coal) ‘reducing agent’
Limestone - remove impurities

Question 3

Briefly describe process of extracting iron using a blast furnace in 3 steps

Answer 3

1. Hot air blows in coke burns heats furnace produces CO2
2. CO2 reacts with coke to form carbon monoxide
3. Reacts with iron oxide displacing the iron. The pure molten iron flows to the bottom of the blast furnace

Question 4

What is done with the molten iron from a blast furnace

Answer 4

Some left to solidify in moulds - called cast iron or pig iron, other used in alloys

Question 5

Pig iron / cast iron

Answer 5

The iron left to solidify in moulds

Question 6

Cast iron % what main impurities

Answer 6

96% iron 4% impurities mainly carbon

Question 7

How do you decide how to extract a metal

Answer 7

It’s position on the reactivity series
Above carbon electrolysis
Between carbon and hydrogen reduction reactions
Below hydrogen found in native state

Question 8

Native state

Answer 8

Found as the metal below hydrogen

Question 9

Electrolysis

Answer 9

Substances broken down into single elements using electricity