Chapter 8: Concepts of Chemical Bonding

Chapter 8 General Instructional Objectives (GIOs)

Chapter 8 Introduction.

1. Define chemical bond.

2. Distinguish (how are they different) ionic, covalent and metallic bonds.

3. Explain why metals (due to their metallic bonding) are ductile, shiny and malleable. In addition, explain how metallic bonds form and how they are different from ionic and covalent bonds. Use this videos:

Metallic Bonds and Metals and their bonds

Section 8.1. Lewis Symbols and the Octet Rule

1. Define valence electrons.

2. Draw lewis structures for elements.

3. Explain what the octet rule is and it's role in understanding chemical bonding.

4. Be able to draw Lewis structures and write formulas for a hydride. Gleaned from in-class activity, "Making Hydrides"

Section 8.2. Ionic Bonding

1. Explain how and why ionic bonds form (use the formation of sodium chloride as an example).

2. List properties of ionic substances.

3. Know that it requires energy to create a cation and energy is released to make an anion. No need to get into lattice energy!

4. Predict the charge on an ion. Sample Exercise 8.2.

5. Identify transition metal ions and their electron configurations.

Section 8.3. Covalent Bonding

1. Define covalent bond and explain how they form.

2. Be able to draw lewis structures for covalent compounds. Sample Exercise 8.3.

3. Identify lone (nonbonding) and bonding electron pairs and what they signify (mean).

4. Explain how double and triple bonded compounds form.

5. Know the relationship between length of bond and number of shared electron pairs.

Section 8.4. Bond Polarity and Electronegativity

1. Define bond polarity, nonpolar covalent and polar covalent bond.

2. Define electronegativity and it's role in chemical bonding.

3. Know the electronegativity trend.

4. Be able to determine which bond is more polar. Sample Exercise 8.4.

5. Define dipole.

6. Differentiate ionic, metallic and covalent bonding.

a. provide explicit models of how they bonds form.

b. use electron configurations to explain differences.

c. compare the properties of substances with these kinds of bonds.

Section 8.5. Drawing Lewis Structures

1. Use the "rules" for making Lewis structures. Sample Exercises 8.6-8.8

Section 8.6. Resonance

1. Define resonance and understand it's meaning and implication for making Lewis structures.

2. Identify compounds that have resonance and draw Lewis structures that have resonance. Sample Exercise 8.10

Section 8.7. Exceptions to the Octet Rule

1. List exceptions to the Octet Rule.

2. Be able to draw Lewis structures for compounds who are 'exempt' from the Octet Rule (if you can homework set question 8.63, you'll be fine!)

Chapter 8 Practice Quizzes

Homework Set 7

Page 329: 8.1

Page 330: 8.4, 8.9, 8.13, 8.15, 8.17, 8.19

Page 331: 8.31, 8.33, 8.35, 8.39, 8.41

Page 322: 8.47, 8.59

Chapter 8 Self Quiz

Click HERE to complete the Chapter 8 self-quiz.

Questions: 11

Attempts: 3

Time limit: 16 minutes

Score: Not graded

Purpose: Determine how well you understand the material from chapter 8.

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