An oxide is a chemical compound that is
based on oxygen and other chemical elements having less electronegativity than
oxygen. When any element reacts with oxygen, it creates a single metal oxide,
for example, iron oxide or zinc oxide. A sub-oxide has smaller or larger
portions of oxygen than normal oxide. Various tiny particles which are turned
into a powder of metal oxide are considered micron powder. Oxide has a
crystalline structure, while some have an amorphous structure as well. In
metallurgy, oxide provides an initiating point for metal production by
reduction for most metals except sodium which is prepared from its own
chloride.