About chemistry

what is chemistry? Chemistry  is the science of matter and the changes it undergoes. Disciplines within chemistry are traditionally grouped by the type of matter being studied or the kind of study. These include inorganic chemistry, the study of inorganic matter; organic chemistry, the study of organic (carbon based) matter; biochemistry, the study of substances found in biological organisms; physical chemistry, the study of chemical processes using physical concepts such as thermodynamics and quantum mechanics; and analytical chemistry, the analysis of material samples to gain an understanding of their chemical composition and structure.
 Atom, molecule, element, substances, ions and salts, equilibrium, energy, chemical reactions, acidity and basicity are all about chemistry.