extraction of metals

Question 1

where can unreactive metals be found?

Answer 1

directly in the earth

Question 2

how does a displacement reaction work?

Answer 2

a more reactive element will push out or displace a less reactive element from its compound

Question 3

magnesium + iron oxide —> ?

Answer 3

magnesium + iron oxide—> magnesium oxide + iron

magnesium is more reactive than iron and will displace it

Question 4

one of these reactions is impossible. identify which one and why

lithium + mag oxide—> lithium oxide + mag

zinc + calcium oxide—> zinc oxide + calcium

carbon + copper oxide—> carbon dioxide + copper

Answer 4

the displacement of zinc and calcium is impossible because zinc is less reactive that calcium