? Oxide belongs to the compound, it must be pure, its composition contains only two elements, one of which must be oxygen, and the other if the metal element, compared to metal oxide; if non-metallic, Metal oxide
Elements and oxygen compounds are called oxides (and only two elements). Such as carbon dioxide (CO2), calcium oxide (CaO) Depending on the chemical nature of the oxide, the oxide according to whether the formation of salt with water and the type of salt can be divided into acidic oxides, alkaline oxides, amphoteric oxides and non-salt oxides [1] four categories. There are also many complex oxides.
