Chapter 7: Periodic Properties and Trends

Chapter 7 General Instructional Objectives (GIOs)

Section 7.1. Development of the Periodic Table

1. Explain why some elements are easier to locate/identify than others in nature.

2. Identify elements with similar properties and why they share these properties.

Section 7.2. Effective Nuclear Charge

1. State Coulomb's law and how it relates to atomic structure.

2. Define effective nuclear charge.

3. Know the trend for effective nuclear charge.

Section 7.3. Sizes of Atoms and Ions

1. Distinguish between nonbinding and bonding atomic radii.

2. Know the trends for atomic radii and ionic radii.

3. Be able to predict relative sizes of atomic and ionic radii. Sample exercises 7.2-7.3.

4. Define isoelectronic groups and arrange ions in order of increasing/decreasing size. Sample exercise 7.4.

Section 7.4. Ionization Energy

1. Define ionization energy.

2. Distinguish between first and second ionization energy.

3. Know the trends in ionization energy. Sample exercises 7.6-7.7.

Section 7.6. Metals, Nonmetals and Metalloids

1. Know important properties of metals, nonmetals and metalloids.

Section 7.7. Trends for Groups 1A and 2A Metals

1. Know important properties of the alkali and alkaline earth metals.

Section 7.8. Trends for Nonmetals

1. Explain why hydrogen is reactive and unique.

2. Explain why oxygen is reactive with metals.

3. Explain how ozone forms.

4. Explain why sulfur is slightly less reactive than oxygen.

5. Know important properties of the halogens.

6. Explain the importance of chlorine and how it reacts with water.

7. Explain why group 8A elements are typically non-reactive.

BE SURE YOU CLEARLY UNDERSTAND THE TRENDS AND USE THEM TO IDENTIFY 'UNKNOWN' ELEMENTS!

Chapter 7 Practice Quizzes

Chapter 7 Self Quiz

Click HERE to complete the Chapter 7 self-quiz.

Questions: 15

Attempts: 3

Time limit: 20 minutes

Score: Not graded

Purpose: Determine how well you understand the material from chapter 7.

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