2Na + 2H2O = 2NaOH + H2
Zn + S = ZnS
Zn + O2 = ZnO
Zn + HCl = ZnCl2 + H2
Zn + FeCl2 = ZnCl2 + Fe
Mg + H2O = Mg(OH)2 + H2
3Mg + 2P = Mg3P2
Cu + H2SO4 =
Mg + Cl2 = MgCl2
Mg + ZnO =
Mg + NiSO4 = MgSO4 + Ni
Al + Br2 = AlBr3
Al + FeSO4 = Al2(SO4)3 + Fe
Al + HI = AlI3 + H2