CLASS CONCEPTS 1. Introduction to Chemistry 2. The Periodic Table 3. Quantum Numbers 4. Electron Configuration 5. Chemical Families 6. Oxidation Numbers 7. Chemical Formulas 8. Chemical Names 9. Formula Mass 10. Percentage Composition 11. Reaction Types 12. Balancing Equations 13. The Mole Concept 14. Solution Concentration 15. Stoichiometry 16.