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.
Prove that rust is a new compound. Another word for rust is 'iron oxide'. An oxide is a compound that contains a metal or a non-metal combined with oxygen. Oxidisation is the chemical process of combining a substance with oxygen. When iron comes into contact with the oxygen in water, a chemical reaction occurs to make a new compound. This new compound is made up of iron atoms and oxygen atoms bonded together. These molecules are rust, or iron oxide. Iron oxide contains two atoms of iron and three atoms of oxygen.