What are differences and similarities between a pure substance and a homogeneous mixture?

1 Answer
Jul 31, 2017

Pure substances are composed of a single element or compound while homogeneous mixtures are composed of multiple different elements or compounds.


A pure substance is composed of a single element or compound. Some examples of a pure substance are:
salt (NaCl), copper (Cu), and atmospheric oxygen (#O_2#)

A homogeneous mixture (also known as a solution) is composed of multiple pure substances in a uniform composition. Some examples are:
air (#N_2#, #O_2#, #CO_2#, etc), salt water (NaCl and #H_2O#) and brass (Cu and Zn)