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Ch 6: Praxis General Science: Thermodynamics

About This Chapter

Watch the tutorial videos and complete the self-assessment quizzes in this chapter so that you can accurately answer related Praxis General Science examination questions. The chapter consists of definitions, examples and equations related to thermodynamics.

Praxis General Science: Thermodynamics - Chapter Summary

This chapter on thermodynamics will enable you to brush up on thermodynamics before you sit for the Praxis General Science examination. Study the animated video lessons in order to identify the four phase changes of matter, understand the relationship between temperature and heat, and solve equations involving linear thermal expansion. The lessons will explain how electricity is created from energy, and they'll remind you of what happens during isothermic and adiabatic processes. When you've watched the chapter's videos, you might have the ability to:

  • Define heat, temperature and thermal expansion
  • Explain the concept of a heating curve
  • Illustrate temperature and heat changes to water
  • Provide examples of endothermic and exothermic reactions
  • Understand the laws of thermodynamics and the zeroth law of thermodynamics
  • Describe how the Carnot Cycle works

Teachers present these topics in easy-to-understand language, and you may email our experts for help with your questions about thermodynamics. Whether you'd rather learn visually or study primarily by reading, this chapter can help you prepare for the Praxis General Science examination. Learn from written transcripts in addition to the narrated, animated videos. Worksheets and quizzes are also included in the chapter, and they can be used as extra study tools when printed out.

Praxis General Science: Thermodynamics - Chapter Objectives

This chapter's lessons will prepare you for questions on the Praxis General Science examination's Physical Science content category. One of five main sections and the largest on the assessment, this category contains 51 questions and has an approximate test percentage of 38%. You'll have 2.5 hours to answer 135 selected-response questions, several of which will reflect the lessons you've reviewed here. This is a computer-delivered examination.

9 Lessons in Chapter 6: Praxis General Science: Thermodynamics
Test your knowledge with a 30-question chapter practice test
What is Heat? - Definition & Explanation

1. What is Heat? - Definition & Explanation

In this lesson, you will learn the definition of heat and find out how it differs from temperature. You will also explore practical applications of heat such as expansion, thermodynamics, heat transfer, specific heat, phase transitions, and heat engines.

What is Temperature? - Definition & Measurement

2. What is Temperature? - Definition & Measurement

In the most intuitive terms, temperature refers to how hot or cold something is. Learn more about temperature as a measure of the average kinetic energy of the particles in an object and test your knowledge with quiz questions.

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.

Changes in Heat and Energy Diagrams

4. Changes in Heat and Energy Diagrams

Did you know that temperature and heat are not the same thing? Did you know that the temperature of water doesn't change when it boils? This lesson describes the relationship between heat and temperature. Diagrams are used to illustrate the relationship between heat and temperature during phase changes.

Endothermic and Exothermic Reactions

5. Endothermic and Exothermic Reactions

Explore a chemical reaction at the molecular level. Learn about exothermic and endothermic reactions, what they look like and what happens when they occur. Understand enthalpy and how you can use it to predict whether a reaction will be exothermic or endothermic.

Thermal Expansion: Definition, Equation & Examples

6. Thermal Expansion: Definition, Equation & Examples

In this lesson, you will learn what thermal expansion is and discover an equation for calculating how much different materials expand. You'll look at a number of examples of thermal expansion. A short quiz will follow.

The Zeroth Law of Thermodynamics

7. The Zeroth Law of Thermodynamics

After watching this video, you will be able to state the zeroth law of thermodynamics, what it means, and why it is important. A short quiz will follow.

The Laws of Thermodynamics

8. The Laws of Thermodynamics

Learn about the first and second laws of thermodynamics. Find out how energy is generated, how it converts from one form to another, and what happens to energy in a closed system.

Efficiency & the Carnot Cycle: Equations & Examples

9. Efficiency & the Carnot Cycle: Equations & Examples

After watching this video, you will be able to explain the Carnot Cycle, including what it represents and how it works, and calculate the efficiency of a particular Carnot engine. A short quiz will follow.

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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