3.3.4 - metal extraction Flashcards
1
Q
what are the 2 ways of extracting metal?
A
- electrolysis
- carbon extraction
2
Q
what do we use to extract metals more reactive than carbon
A
electrolysis
3
Q
what do we use to extract metals less reactive than carbon
A
carbon extraction
4
Q
for example of carbon extraction, how can copper be displaced from its ore (copper oxide)?
A
by heating with carbon
5
Q
reduction definition (in terms of oxygen)
A
loss of oxygen
6
Q
reducing agent definition (in terms of oxygen)
A
takes oxygen away from something else
7
Q
oxidisation (in terms of oxygen)
A
gain of oxygen
8
Q
oxidising agent (in terms of oxygen)
A
gives oxygen to something else
9
Q
what type of reaction is carbon extraction
A
redox reaction
10
Q
redox meaning (in terms of oxygen)
A
reduction and oxidation at the same time
