Before revision: 300px|Partial ordering of the sciences proposed by Balaban and Klein Chemistry is often called the central science because of its role in connecting the physical sciences,John M. Malin "International Year of Chemistry - 2011 Chemistry – our life, our future" which include chemistry, with the life sciences, pharmaceutical sciences and applied sciences such as medicine and engineering.
After revision: 300px|Partial ordering of the sciences proposed by Balaban and Klein Chemistry is often called the cental science because of its role in connecting the physical sciences,John M. Malin "International Year of Chemistry - 2011 Chemistry – our life, our future" which include chemistry, with the life sciences, pharmaceutical sciences and applied sciences such as medicine and engineering.