The stoichiometry of compounds and chemical reactions. Properties of gases. Periodicity and chemical bonding. Energy changes in chemical systems. Electronic structure of atoms and molecules; correlation with the chemical reactivity of common elements, inorganic and organic compounds. [Note: Offered: F, W. Science students must also take CHEM 120L. Successful completion of Grade 12 U Calculus and Vectors and Grade 12 U Chemistry or equivalent courses is required] Also offered Online