`@` Oxide acid

`-` `CO_2:` Carbon dioxide

`-` `P_2``O_5:` Diphosphorus pentoxide

`-` `SO_2:` Sulfur dioxide

`-` `SO_3:` Sulfur trioxide

`@` Oxide basic

`-` `CaO:` Calcium oxide

`-` `K_2``O:` Potassium oxide

`-` `Al_2``O_3:` Aluminium oxide

`-` `FeO:` Iron `(II)` oxide

`-` `BaO:` Barium oxide

`-` `Fe_2``O_3:` Iron `(III)` oxide