extraction of metals Flashcards
1
Q
where can unreactive metals be found?
A
directly in the earth
2
Q
how does a displacement reaction work?
A
a more reactive element will push out or displace a less reactive element from its compound
3
Q
magnesium + iron oxide —> ?
A
magnesium + iron oxide—> magnesium oxide + iron
magnesium is more reactive than iron and will displace it
4
Q
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
A
the displacement of zinc and calcium is impossible because zinc is less reactive that calcium
