Term of the Day
An elementA substance containing only one kind of atom and that therefore cannot be broken down into component substances by chemical means. having properties intermediateIn chemical kinetics, a species that is formed in an early step in a reaction mechanism and then consumed in a later step; evidence of existence of an intermediate may be important for the interpretation of a rate law. between a metalAn element characterized by a glossy surface, high thermal and electrical conductivity, malleability, and ductility. and a non-metal.