CHM101H1 Lecture Notes - Lecture 2: Maitotoxin, Archibald Scott Couper, Orbital Hybridisation
10 Apr 2014
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Early chemical history: alchemy: alchemy ( dawn of time current day! The four elements: air (anaximenses), earth (empedocles), Aristotle held that the four elements are associated with the qualities: hot, cold, wet and dry! Aether (the quintessence) is the fth element (extraterrestrial)! Similar elements were found in other ancient philosophies! Alchemical studies ultimately led to the development of both modern chemistry and medicine, both of which remain linked to this day. Hippocrates believed that illness was caused by an imbalance of the four bodily uids: blood, phlegm, black bile and yellow bile! Iatrochemists believed that physical well-being was dependent upon an appropriate balance of bodily uids. Paracelsus in particular developed the use of chemicals and minerals for medical treatments. R. batey, univ. of toronto, page b1! Early chemical history: the atom: democritus (ca. Coined the word atom which is derived from the greek word. The universe is composed of an in nite number of tiny particles called atoms!
