Metal reactions Flashcards
1
Q
what is a thermit reaction
A
between aluminium and iron (3) oxide
2
Q
what happens during a thermit reaction
A
the aluminium is more reactive and displaces the iron and gets oxidisied whilst the iron is reduced
3
Q
we can also displace iron with carbon, how does this reaction work
A
the carbon is more reactive then iron so it displaces the iron (better at oxidising)
4
Q
what other metals can carbon be used to extract
A
copper (malachite ore)
lead (galena ore)
Zinc
Tin
5
Q
what are the limitation of using carbon extraction
A
it only works for metals less reactive then carbon
not good for metals above and including aluminium
impure substances are formed after meaning you need to do futher purification or alloying
