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Ch 5: Praxis General Science: States of Matter

About This Chapter

Through these well-designed and information-packed video lessons, you can refresh your understanding of the behavior of gases and the scientific laws that affect them. Use this chapter as preparation for the Praxis General Science exam.

Praxis General Science: Gases - Chapter Summary

Get ready to take the Praxis General Science exam. Review the theories such as the kinetic molecular theory as you work through this chapter. The videos include information that can help you do the following:

  • Understand the ideal gas law and the gas constant
  • Calculate pressure, volume, temperature or quantity of a gas
  • Explain phase diagrams of critical point, triple point, and phase equilibrium boundaries
  • Diagram phase changes and heating curves

Take your Praxis General Science study guide with you wherever you go. This study guide can be accessed and worked through from your smartphone, tablet, laptop or notebook computer. You need only a location with Internet access to continue with your studies. This convenience helps you maximize the use of your time.

6 Lessons in Chapter 5: Praxis General Science: States of Matter
Test your knowledge with a 30-question chapter practice test
The Kinetic Molecular Theory: Properties of Solids and Liquids

1. The Kinetic Molecular Theory: Properties of Solids and Liquids

This lesson explores the kinetic molecular theory and how it pertains to the properties of solids and liquids. You'll learn the properties of solids and liquids, discover the types of intermolecular attractions that occur between them and gain an understanding how phase changes happen.

Phase Diagrams: Critical Point, Triple Point and Phase Equilibrium Boundaries

2. Phase Diagrams: Critical Point, Triple Point and Phase Equilibrium Boundaries

Learn what a phase diagram is and how to interpret phase diagrams. Discover how to use a phase diagram to locate the phase equilibrium boundaries. Also, learn what a triple point and critical point are and how to locate them on a phase diagram.

Phase Changes and Heating Curves

3. Phase Changes and Heating Curves

Learn the phases - gas, liquid, solid and plasma. Learn what a phase diagram is and what terms describe the movement between phases: melting, sublimating, freezing, vaporization, condensation, and deposition. Discover why heating curves have plateaus, what a phase transition is, and what happens during this transition.

The Kinetic Molecular Theory: Properties of Gases

4. The Kinetic Molecular Theory: Properties of Gases

What makes a gas ideal? What types of characteristics do ideal gases have? In this lesson, we will discuss the many characteristics of gases and how knowing the microscopic properties of gas particles will help you understand the macroscopic properties of a gas.

The Ideal Gas Law and the Gas Constant

5. The Ideal Gas Law and the Gas Constant

Have you ever wondered why the pressure in your car's tires is higher after you have been driving a while? In this lesson, we are going to discuss the law that governs ideal gases and is used to predict the behavior of real gases: the ideal gas law.

Using the Ideal Gas Law: Calculate Pressure, Volume, Temperature, or Quantity of a Gas

6. Using the Ideal Gas Law: Calculate Pressure, Volume, Temperature, or Quantity of a Gas

In another lesson, you learned that the ideal gas law is expressed as PV = nRT. In this video lesson, we'll go one step further, examining how to rearrange the equation to solve for a missing variable when the others are known.

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

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