Ch 19: GACE Physics: Atoms

About This Chapter

Get ready for questions you'll see on the GACE Physics assessment with this chapter. Engaging video lessons will refresh your memory on important topics concerning atoms.

GACE Physics: Atoms - Chapter Summary

Reinforce what you've learned about atoms by completing the short, fun video lessons in this chapter. You'll leave the chapter well-prepared for any GACE Physics assessment items about the following:

  • Mass number and atomic number
  • Early atomic theory
  • Average atomic mass
  • Avogadro's number
  • Electron configurations
  • The four quantum numbers
  • The Bohr model

Use our unique tagging system to skip to the topics you need to study and follow along with text transcripts. The practice quizzes allow you to quickly confirm your understanding of the material.

7 Lessons in Chapter 19: GACE Physics: Atoms
Test your knowledge with a 30-question chapter practice test
Atomic Number and Mass Number

1. Atomic Number and Mass Number

Atoms are the basic building blocks of everything around you. In order to really understand how atoms combine to form molecules, it's necessary to be familiar with their structure. In this lesson, we'll dissect atoms so we can see just what really goes into those little building blocks of matter.

Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

2. Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

Imagine firing a bullet at a piece of tissue paper and having it bounce back at you! You would probably be just as surprised as Rutherford when he discovered the nucleus. In this lesson, we are going to travel back in time and discuss some of the major discoveries in the history of the atom.

Isotopes and Average Atomic Mass

3. Isotopes and Average Atomic Mass

When you drink a glass of water, you are actually drinking a combination of heavy water and light water. What's the difference? Is it harmful? This video will explain the difference between the two types of water and go into detail on the significance of the different isotopes of elements.

Avogadro's Number: Using the Mole to Count Atoms

4. Avogadro's Number: Using the Mole to Count Atoms

How do we move from the atomic world to the regular world? Because atoms are so tiny, how can we count and measure them? And what do chemists celebrate at 6:02 AM on October 23rd each year? In this lesson, you will be learning how Avogadro's number and the mole can answer these questions.

Electron Configurations in Atomic Energy Levels

5. Electron Configurations in Atomic Energy Levels

This lesson will explain what the electrons are doing inside the atom. Tune in to find out how we specify where they are located and how this location description will help us predict an element's properties.

Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin

6. Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin

Each electron inside of an atom has its own 'address' that consists of four quantum numbers that communicate a great deal of information about that electron. In this lesson, we will be defining each quantum number and explaining how to write a set of quantum numbers for a specific electron.

The Bohr Model and Atomic Spectra

7. The Bohr Model and Atomic Spectra

Do you ever wonder where light comes from or how it is produced? In this lesson, we are going to use our knowledge of the electron configurations and quantum numbers to see what goes on during the creation of light.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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