c6.1.6 extracting metals Flashcards
1
Q
What is the ore to remove copper
A
malachite
2
Q
What is the ore to remove aluminum
A
bauxite
3
Q
What is the ore to remove iron
A
haematite
4
Q
stage 1 of extracting copper
A
2CuS + 3O2 -> 2CuO + 2SO2
5
Q
stage 2 of extracting copper
A
2CuO + C -> 2Cu + CO2
6
Q
what type of reactions are these?
A
redox reactions
7
Q
how can you extract anything above carbon
A
using electrolysis
8
Q
how can you extract anything below carbon
A
use carbon to reduce it
9
Q
describe the experiment used to extract copper
A
- Mix copper (oxide) with charcoal in a crucible with the lid on it and heat it strongly
- Allow it to cool
- Pull all the contents in a beaker of water
- Copper is dense so it will sink
- Separate it
10
Q
What is the ore to remove copper
A
malachite
11
Q
what must be in excess during the experiment?
A
charcoal
