Copyright

Ch 4: Praxis General Science: Atomic Structure

About This Chapter

Refresh your memory and prepare for the Praxis General Science exam using the lessons in the Atomic Structure chapter of our Praxis General Science study guide. The material you will cover will enable you to approach the exam with confidence.

Praxis General Science: Atomic Structure - Chapter Summary

Reinforce or expand your knowledge of basic atomic structure in preparation for taking the Praxis General Science examination. You will find the following information in this chapter's videos:

  • Contributions of Dalton, Thomson, Millikan and others
  • Understanding the Bohr model
  • Atomic and mass numbers
  • Configurations of electrons in atomic energy levels
  • Understanding principal, angular momentum, magnetic and spin numbers
  • Understanding and using Avogadro's number

Our instructors are here for you whenever you need them. You have ready access both to the lesson instructors and our subject-matter experts for questions, clarification or any other assistance you may need. Fully written transcripts accompany each video lesson, and key vocabulary is highlighted for your convenience.

6 Lessons in Chapter 4: Praxis General Science: Atomic Structure
Test your knowledge with a 30-question chapter practice test
Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

1. 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.

The Bohr Model and Atomic Spectra

2. 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.

Atomic Number and Mass Number

3. 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.

Electron Configurations in Atomic Energy Levels

4. 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

5. 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.

Avogadro's Number: Using the Mole to Count Atoms

6. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the Praxis General Science (5435): Practice & Study Guide course

Support