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Chemistry
Chemistry (from Egyptian keme (chem), meaning "earth"[1]) is the science
concerned with the reactions, transformations and aggregations of matter, as
well as accompanying energy and entropy changes during such transformations. It
is also a field of study to investigate matter from the atomic to macromolecular
scale, such as molecules, crystals. According to quantum chemistry, all physical
and chemical properties of substances are a consequence of their structure at
the molecular or atomic scale.
Analytical chemistry is the analysis of material samples to gain an
understanding of their chemical composition and structure. Analytical chemistry
incorporates standardized experimental methods in chemistry. These methods may
be used in all subdisciplines of chemistry, excluding purely theoretical
chemistry.
Biochemistry is the study of the chemicals, chemical reactions and chemical
interactions that take place in living organisms. Biochemistry and organic
chemistry are closely related, as in medicinal chemistry or neurochemistry.
Biochemistry is also associated with molecular biology and genetics.
Theoretical chemistry is the study of chemistry via fundamental theoretical
reasoning (usually within mathematics or physics). In particular the application
of quantum mechanics to chemistry is called quantum chemistry. Since the end of
the Second World War, the development of computers has allowed a systematic
development of computational chemistry, which is the art of developing and
applying computer programs for solving chemical problems. Theoretical chemistry
has large overlap with (theoretical and experimental) condensed matter physics
and molecular physics. Essentially from reductionism theoretical chemistry is
just physics, just like fundamental biology is just chemistry and physics.
Other fields include Astrochemistry, Atmospheric chemistry, Chemical
Engineering, Chemical biology, Chemo-informatics, Electrochemistry,
Environmental chemistry, Flow chemistry, Geochemistry, Green chemistry, History
of chemistry, Materials science, Medicinal chemistry, Molecular Biology,
Molecular genetics, Nanotechnology, Organometallic chemistry, Petrochemistry,
Pharmacology, Photochemistry, Phytochemistry, Polymer chemistry, Solid-state
chemistry, Sonochemistry, Supramolecular chemistry, Surface chemistry,
Immunochemistry and Thermochemistry.Learn Chemistry, SCHOOLS Chemistry, COLLEGES
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