Investigation of Action of Saliva and Hydrochloric Acid in Carbohydrate Solution

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Chapter 8

Covalent Bonding and Molecular Structure

Chapter 8: Covalent
Molecular Structure



Chapter In Context
In this chapter and the next, we examine chemical bonding in detail. We examined ionic
bonding briefly in Chapter 2 and will do so in more detail in Chapter 11. We will also
examine intermolecular forces in detail in Chapter 11. Here we will apply what you have
learned about atomic structure (Chapter 6), electron configurations, and periodic trends
(Chapter 7) to the chemical bonds formed between atoms and ions and the shapes of
molecules and ions that contain covalent bonds.


Biology: Molecular shape of enzymes specifically allow only certain reactions to
occur. Drugs are developed that specifically fit into active sites in the enzyme to
affect or even stop its action.

Chapter 8
8.1 Interactions Between
Particles: Coulomb’s
8.2 Covalent Bonding
8.3 Lewis Structures
8.4 Bond Properties
8.5 Electron Distribution
in Molecules
8.6 Valence-Shell
Repulsion Theory
and Molecular Shape
8.7 Molecular Polarity

Chapter Goals
• Apply Coulomb’s Law.
• Understand forces
involved in covalent
• Write Lewis symbols and
Lewis structures.
• Predict bond properties.
• Understand charge
distribution in molecules.
• Use VSEPR theory.
• Identify polar and
nopolar species.

Chapter 8

Covalent Bonding and Molecular Structure


8.1 Interactions Between Particles: Coulomb’s Law
OWL Opening Exploration
8.1 Coulomb’s Law

Matter is made up of atoms and ions that experience both attractive and repulsive forces.
The strength of the force holding oppositely charged particles together in any material is
described by Coulomb’s Law (equation 8.1). According to this law, force of attraction
or repulsion between two charged species is directly proportional to the magnitude of the
charge on the particles (qA and qB in equation 8.1)…...

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