ah so the Mg+2 swaps with Cu(II)SO-2 to make Mg+2SO-2 + Cu?
btw i check the test tube it smells like the iodine and sulphur have joined and the metals have sunk to the bottom
AAAAAAAAa so the Mg never reacts with oxygen.
and the potassium reacts with the copper
so then i get potassium oxide and the copper is separate ??