Chapter Objectives
Chapter 9 & 2 - The Covalent Bonding Model
Sections 9.3 - 9.5

Be able to describe how nonmetal atoms combine to from covalent bonds.
- Assigned problem: 9.34
Be able to describe how bonding and lone pair electron pairs fill the outer (valence) level of each atom in a molecule.

Be able to describe how bond order, bond length and bond energy are related to one another.
- Assigned problem: 9.35, 9.36, 9.37
Be able to distinguish between bonding and nonbonding forces both within and between covalent molecules and describe how these explain the properties of covalent molecules and network covalent solids
- Assigned problems: 9.38

Be able to rank similar covalent bonds according to their length and strength
- Assigned problems: 9.39
- Sample problem: 9.2

Be able to discuss how a reaction can be subdivided into bond making and bond breaking steps.
- Assigned problems: 9.43, 9.44

Be able to use bond energies to calculate and enthalpy of reaction (ΔH^o_rxn).
- Sample problem 9.3
- Assigned problems: 9.46, 9.48, 9.49, 9.50, 9.51

Be able to describe the periodic trends in electronegativity and relate these to the periodic trends in atomic size.
- Assigned problems: 9.52, 9.53, 9.55
Be able to discuss how the electronegativity values for the atoms participating in a chemical bond can be used to predict the polarity of the the bond.
- Assigned problem 9.54, 9.69, 9.56, 9.84
Be able to describe how the degree of polarity for a chemical bond changes from ionic to polar covalent to nonpolar covalent as you move across a period and be able to relate this to the electronegativity values for the atoms participating in a chemical bond.

Be able to determine the relative polarity of a bond from the electronegativity values (EN) of the atoms participating in a chemical bond.
- Sample problem 9.4
- Assigned problems: 9.57, 9.59, 9.61, 9.62, 9.63, 9.64, 9.65, 9.66, 9.67, 9.6