It was claimed that in this way the presence of specks of oxide was avoided.
In general, then, an oxide is a compound of oxygen with another element.
If more hydrogen is admitted, some of the oxide will be reduced to metal.
Iron, for example, occurs largely in the form of the oxide Fe2O3.
It is composed of silica, alumina, carbonate of lime, magnesia and oxide of iron.
The oxide zones of many ore bodies are formed by these processes.
The oxide and the carbonate are probably products of surface weathering.
In the oxide zone, native mercury and the chloride, calomel, are formed.
In storage, no self-polymerization of 1,2-butylene oxide has been detected.
In some varieties the oxide of uranium is also present in traces.