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.
(b) Write the balanced chemical equation for the reaction of aluminum oxide with nitric acid.2. Write the balanced chemical equation for the reaction between copper(II) oxide and sulfuric acid.3. Write the balanced chemical equation for the reaction of solid tetraphosphorus hexoxide with water. Alkali Metals (Gr 1A) â¢ Very reactive because of low ionization energy.