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Ch 2: Praxis General Science: Matter

About This Chapter

When studying for the Praxis General Science exam, use the lessons in this chapter to improve your understanding of the chemical and physical properties of matter. Brief quizzes can test your comprehension.

Praxis General Science: Matter - Chapter Summary

This chapter can help you prepare for matter questions on the Praxis General Science exam by providing information on the physical and chemical properties of matter and early theory. The lessons are taught by our professional instructors and can improve your ability to do the following:

  • Explain the Bohr model and atomic spectra
  • Identify atomic and mass numbers
  • Explore electron configurations in atomic energy levels
  • Detail fusion, fission, carbon dating, tracers and imaging
  • Discuss the physical and chemical states of matter
  • Define radioactive isotopes and radioactive decay

For a text-based review of the material presented in the videos, you can also read the lesson transcripts. To test your retention, take the lesson quizzes. Questions about matter can be submitted to our experts via the dashboard.

9 Lessons in Chapter 2: Praxis General Science: Matter
Test your knowledge with a 30-question chapter practice test
Matter: Physical and Chemical Properties

1. Matter: Physical and Chemical Properties

How are substances identified? There are two major ways we can describe a substance: physical properties and chemical properties. Learn about how chemists use properties to classify matter as either a mixture or a pure substance.

States of Matter and Chemical Versus Physical Changes to Matter

2. States of Matter and Chemical Versus Physical Changes to Matter

The world around us is constantly changing. Chemists put those changes into two main categories: physical changes and chemical changes. This lesson will define and provide examples of each.

Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

3. 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

4. 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

5. 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

6. 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.

Radioactive Isotope: Definition & Uses

7. Radioactive Isotope: Definition & Uses

There are over 1,000 known radioactive isotopes of elements in the periodic table. There are many applications of radioactive isotopes in various fields. In this lesson, we will learn all about radioactive isotopes and their uses.

Radioactive Decay: Definition, Formula & Types

8. Radioactive Decay: Definition, Formula & Types

In this lesson, we'll discuss radioactive decay and learn the terms parent nucleus, daughter nucleus, and half-life. We'll also examine three types of radioactive decay.

Fusion, Fission, Carbon Dating, Tracers & Imaging: Applications of Nuclear Chemistry

9. Fusion, Fission, Carbon Dating, Tracers & Imaging: Applications of Nuclear Chemistry

What can the sun do that we can't? How do carbon atoms 'date'? Are radioactive isotopes helpful in the medical field? The answers to these questions can be found in this lesson on the applications of nuclear chemistry.

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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