Chemical : Definition
A chemical is any substance that is composed of one or more atoms of an element
or of a compound consisting of different elements. The term chemical is used to
refer to a specific substance composition as if it were in its pure form. For example,
when speaking about sodium chloride (NaCl), one refers to the specific NaCl molecule
and not to any mixture of it. Here, NaCl is understood as a pure substance that
cannot be separated further into multiple components by physical separation, such
as, filtration or distillation. Filtering a solution of NaCl still yields solid
NaCl after the liquid is removed.
Published on: 10 Dec 2017 1910.
Last updated: 10 Dec 2017 1910.