Getting Metals

Question 1

Which metals are extracted using electrolysis

Answer 1

Potassium Sodium Calcium Magnesium

Aluminium

Question 2

Which metals are extracted by reduction using Carbon

Answer 2

• Zinc
• Iron
• Tin
• Copper

Question 3

How to get copper from electrolysis

Answer 3

• Electrons are pulled off copper atoms and the anode (+ve) causing them to go into solution as Cu2+ ions.
• Cu2+ ions near the cathode gain electrons and turn back copper atoms
• The impurities are dropped at the anode as sludge, whilst pure copper atoms bonds to the cathode (-ve)

Question 4

Anode (+ve)

Answer 4

A lump of impure copper which will dissolve

Question 5

Cathode (-ve)

Answer 5

Starts as a thin piece of copper and more pure copper adds to it

Question 6

Electrolysis

Answer 6

• Breaking down of a substance using electricity
• A liquid conducts the electricity (electrolyte)
• Electrolytes are metal salt solutions (e.g copper sulphate )
• The electrolyte has free ions (conduct electricity makes it work)
• Electrons are taken away by the +ve and given away by the -ve

Question 7

O I L

Answer 7

Oxidation
Is
Loss of electrons

Question 8

R I G

Answer 8

Reduction
Is
Gain of electrons

Question 9

Bioleaching

Answer 9

• Uses bacteria to seperate copper from copper sulphide
• The bacteria get energy from the bond between copper and sulfur, separating out the copper from the ore on the process
• The leachate contains copper, which can be extracted

Question 10

Phytomining

Answer 10

• Growing plants in soil that contains copper
• The plants can’t use or get rid of the copper so it gradually builds up in the leaves
• The plants can be harvested, dried and burned in s furnace
• The copper can be collected from the ash left in the furnace

Question 11

Metal ore

Answer 11

A rock which contains enough metal to make it worthwhile extracting the metal from it