Getting Metals Flashcards

1
Q

Which metals are extracted using electrolysis

A

Potassium Sodium Calcium Magnesium

Aluminium

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2
Q

Which metals are extracted by reduction using Carbon

A
  • Zinc
  • Iron
  • Tin
  • Copper
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3
Q

How to get copper from electrolysis

A
  • 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)
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4
Q

Anode (+ve)

A

A lump of impure copper which will dissolve

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5
Q

Cathode (-ve)

A

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

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6
Q

Electrolysis

A
  • 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
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7
Q

O I L

A

Oxidation
Is
Loss of electrons

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8
Q

R I G

A

Reduction
Is
Gain of electrons

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9
Q

Bioleaching

A
  • 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
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10
Q

Phytomining

A
  • 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
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11
Q

Metal ore

A

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

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