Kẽm:
1, `Zn(OH)_2`$\buildrel{{t^o}}\over\longrightarrow$`H_2O+ZnO`
2, `2HCl+ZnO`$\buildrel{{t^o}}\over\longrightarrow$`H2O+ZnCl_2`
3, `2AgNO_2+ZnCl_2`$\buildrel{{t^o}}\over\longrightarrow$`2AgCldownarrow+Zn(NO3)_2`
4. `2H_2O+2NH_3+Zn(NO_3)_2`$\buildrel{{t^o}}\over\longrightarrow$`2NH_4NO_3+Zn(OH)_2downarrow`
Natri:
1, `4Na+O_2`$\buildrel{{t^o\ cao}}\over\longrightarrow$`2Na_2O`
2, `Na_2O+H_2O->2NaOH`
3, `C+6NaOH→3H_2uparrow+2Na+2Na_2CO_3`
4, `Li_2SO_(4\ (text(đậm đặc)))+Na_2CO_3`$\buildrel{{t^o\ phòng}}\over\longrightarrow$`Li_2CO_3downarrow+Na_2SO_4`
5, `BaCl_2+Na_2SO_4->2NaCl+BaSO_4`
Nhôm:
1, `2Al(OH)_3`$\buildrel{{t^o\ phòng}}\over\longrightarrow$`Al_2O_3+3H_2O`
2, `Al_2O_3+6HCl->2AlCl_3downarrow+3H_2O`3.
3, `AlCl_3+3NaOH`$\buildrel{{t^o}}\over\longrightarrow$`Al(OH)_3+3NaCl`
4, `Al(OH)_3+NaOH`$\buildrel{{t^o}}\over\longrightarrow$`2H_2O+NaAlO_2`
