extraction of metals Flashcards
1
Q
unreatcive metals found in earth such as
A
gold
2
Q
most metals in earth have reacted with
A
oxygen, so they have been oxidised eg iron oxide
3
Q
what does a more reactive element do in a compund?
A
the more reactive element will push out (displace) a less reactive element from its compund
4
Q
whats happends to magnesium + iron oxide
A
mg displaces fe as its more reactive
magnesium oxide + iron
mg atoms have been oxidised as it gained oxygen and iron atoms have been reduced
5
Q
carbon + iron oxide
A
= carbon dioxide + iron
carbon displaces iron
