How are pure substances and mixtures different

A pure substance, any compound or element, can't be separated into different atoms by physical methods. ... Remember that pure substances are compounds and elements (made up of the same atom or same molecule respectively), while mixtures are an assortment of different substances put together.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.