2Cu+O2=2CuO
Fe2O3+H2=2Fe+3H2O
6Na+N2=2Na3N
2Fe+3Cl2=2FeCl3
BaCl2+K2S=BaS+2KCl
Zn+2HCl=ZnCl2+H2
Zn+N2=Zn3N2
N2+O2=NO3
Cr2O3+3H2=2Cr+3H2O
2AlCl3+3Na2S=Al2S3+6NaCl
2Na+H2=2NaH
CuO+2HCl=CuCl2+H2O
2Mg+O2=2MgO
2Al+6HI=2AlI3+3H2
3Cu+N2=Cu3N2
Fe2O3+3Zn=3ZnO+2Fe
H2S+CaO=CaS+H2O