CHEM 022 Lecture Notes - Lecture 1: Dmitri Mendeleev, Electron Shell, Atomic Nucleus
24 Jun 2017
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Online chem class notes 1 transmogrification, the transition of one metallic solid into another. not all alchemy was completely useless. The arts of distilling one compound from a mixture, the creation of early pharmaceuticals, the creation of soap, making glass from sand, making paper from plant matter, and refining dyes were all the result of alchemical inventions. One of the key figures of atomism is democritus atoms democritus and his colleagues were talking about were theoretical elementary particles that formed four basic elements, fire, earth, wind, and water. 18th century, john dalton proposed the atomic theory, which returned science to the idea that matter was made up of identical, invisible particles, and that atoms made up the chemicals being studied in chemistry. Lavoisier discovered 33 different elements that were combining and recombining into different compounds by means of those chemical reactions. This is true of the third shell as well.
