8.7 metal oxides and redox

from what are some metals extracted from

metal ores mined from underground

what is a metal ore

rock(normaly oxide of the metal) that contains enough of the metal to be profitable to be extracted 

oxidation

gain of oxygen that forms metal oxide from its metal

how is magnesium oxidised

magnesium+oxygen=magnesium oxide

2Mg + O(2) =2MgO

copper +oxygen=copper oxide

Cu+O(2)=2CuO

reduction

loss of oxygen from a compound ,when oxygen has been removed from metal ore ,it is said to have been reduced

why is carbon used in reduction reaction 

carbon is more reactive then oxygen and so will displace it 

copper oxide + carbon = copper +carbon dioxide

2CuO+c=2cU = CO(2)

zinc oxide reduced to make zinc

2Zn + C= 2Zn +CO(2)

how are metals extracted by reduction with carbon

ore is reduced as oxygen is removed from it and carbon gains oxygen so it is oxidised

iron oxide + carbon +iron +carbon dioxide  explain + symbol equation 

iron oxide (ore ) is reduced in hot furnace to make iron. iron less reactive then carbon so when iron oxide and carbon react oxygen is removed from iron ore,leaving iron metal 

2Fe(2)O(3) + 3C = 4Fe + 3CO(2)

why can only metals lower then carbon in the reactivity series be extracted by carbon

carbon can only take away the oxygen from metals less reactive then itself