CHEM 1A Study Guide - Midterm Guide: Valence Electron, Covalent Bond, Nuclear Shell Model
Document Summary
Representaion of molecules: key idea: mater is composed of atoms bonded together in speciic paterns, wrap-up points: Molecular formulas show the idenity and the number of atoms in molecules. Structurual formulas indicate how the atoms are connected to one another. Space-illing models show the overall shape of molecules: topics for review: molecular formula, ball-and-sick model, structural formula, space- illing model. Periodic table, shell model, octet rule: key idea: the raio of elements in a compound depends on the number of valence electrons, wrap-up points: The valence electrons are involved in bonding between atoms. Atoms have noble gas envy which means the bond to try to obtain 8 valence electrons. A formal charge results if each atom in a bonded pair does not contribute equally to the bond: study guide notes: Interacive lewis structure builder! htp://www. stolaf. edu/depts/chemistry/courses/toolkits/123/js/lewis: topics for review: Molecular covalent, ionic, extended covalent, metallic: key idea: properies of mater depend on the types of bonds, wrap-up points:
