Commutator (electric) A commutator is a moving part of a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.
The word equation that would represent the formation of lithium oxide from lithium metal and oxygen is: lithium + oxygen to lithium oxide. In chemical symbols, the balanced chemical equation is expressed as: Li + O2 = Li2O.
From Wikipedia, the free encyclopedia. Aluminium(I) oxide is a compound of aluminium and oxygen with the chemical formula Al 2 O. It can be prepared by heating the stable oxide Al2O3 with elemental silicon at 1800 Â°C under vacuum.luminium (I) Oxide is formed by heating Al and Al 2 O 3 in vacuo while in the presence of SiO 2 and C, and only by condensing the products. Information is not commonly available on this compound due to instability, complex high-temperature spectra, difficult detection, and identification.