06 Covalent Compd

Objectives

Section 1: Covalent Bonds

• 1. Explain the role and location of electrons in a covalent bond.

  2. Describe the change in energy and stability that takes place as a covalent bond forms.

  3. Distinguish between nonpolar and polar covalent bonds based on electronegativity differences.

  4. Compare the physical properties of substances that have different bond types, and related bond types to electronegativity differences.

Section 2: Drawing and Naming Molecules

• 1. Draw Lewis structures to show the arrangement of valence electrons among atoms in molecules and polyatomic ions.

  2. Explain the differences between single, double, and triple covalent bonds.

  3. Draw resonance structures for simple molecules and polyatomic ions, and recognize when they are required.

  4. Name binary inorganic covalent compounds by using prefixes, roots, and suffixes.

Section 3: Molecular Shapes

• 1. Predict the shape of a molecule using VSEPR theory.

  2. Associate the polarity of molecules with the shapes of molecules, and relate the polarity and shape of molecules to the properties of a substance.