Noun
That branch of science which treats of the composition of substances, and of the changes which they undergo in consequence of alterations in the constitution of the molecules, which depend upon variations of the number, kind, or mode of arrangement, of the constituent atoms. These atoms are not assumed to be indivisible, but merely the finest grade of subdivision hitherto attained. Chemistry deals with the changes in the composition and constitution of molecules. See Atom, Molecule.
An application of chemical theory and method to the consideration of some particular subject; as, the chemistry of iron; the chemistry of indigo.
A treatise on chemistry.
Source: Webster's dictionaryChemistry has been termed by the physicist as the messy part of physics, but that is no reason why the physicists should be permitted to make a mess of chemistry when they invade it. Frederick Soddy
Men are not allowed to think freely about chemistry and biology: why should they be allowed to think freely about political philosophy? Auguste Comte
It is now quite lawful for a Catholic woman to avoid pregnancy by a resort to mathematics, though she is still forbidden to resort to physics or chemistry. H. L. Mencken
The ultimate aim of the modern movement in biology is in fact to explain all biology in terms of physics and chemistry. Francis Crick
While I thought myself employed only in forming a nomenclature, and while I proposed to myself nothing more than to improve the chemical language, my work transformed itself by degrees, without my being able to prevent it, into a treatise upon the Elements of Chemistry. Antoine Lavoisier
Nothing can be more incorrect than the assumption one sometimes meets with, that physics has one method, chemistry another, and biology a third. Thomas Henry Huxley