Ch 9: TExES Chemistry: Energy & Thermodynamics

About This Chapter

Brush up on your knowledge of energy and thermodynamics laws and definitions with our video lessons and quizzes. This review is particularly helpful if you are preparing to take the Texas Examinations of Educator Standards (TExES) Chemistry exam.

TExES Chemistry: Energy & Thermodynamics - Chapter Summary

The lessons contained in this chapter are designed to illustrate and provide detailed explanations of energy characteristics and the laws of thermodynamics. Study them so you can better answer questions on the TExES Chemistry 7-12 exam. You will learn about chemical reactions and changes in relation to energy and examples of thermodynamics. In doing so, you should have the ability to demonstrate the following:

  • Defining energy
  • Identifying energy types and sources
  • Describing how a substance changes from one state to another
  • Comparing exothermic and endothermic reactions
  • Calculating thermal expansion
  • Providing details about the laws of thermodynamics
  • Detailing the process involved in the Carnot Cycle
  • Relating what Gibbs free energy is

By presenting the material in an engaging manner, these video lessons make learning or reviewing these topics fun and easy. You'll get an idea of the format used on the actual TExES Chemistry exam and test your mastery of what you've learned from the videos by taking the accompanying quizzes.

TExES Chemistry: Energy & Thermodynamics Objectives

The Energy and Thermodynamics chapter will help you understand complex chemical reactions and energy processes. You will find questions pertaining to these topics in the second domain (Matter and Energy) of the TExES Chemistry 7-12 exam, which makes up 41% of the entire test. A minimum score of 240 is required to pass this exam.

Texas uses the TExES exams to assess an entry-level teacher's comprehension of material within specific content areas. The results are used to help teachers gain certification in the field. Exams are given in core subjects in addition to more specific areas, ranging from art to technology as well as educational administration and counseling.

8 Lessons in Chapter 9: TExES Chemistry: Energy & Thermodynamics
Test your knowledge with a 30-question chapter practice test
What is Energy? - Definition and Significance in Nature

1. What is Energy? - Definition and Significance in Nature

This lesson describes the nature of energy and how it is transferred from one source into another. Additionally, it will describe the significance of energy in natural systems.

Phase Changes and Heating Curves

2. 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.

Endothermic and Exothermic Reactions

3. 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

4. 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

5. 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

6. 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

7. 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.

Gibbs Free Energy: Definition & Significance

8. Gibbs Free Energy: Definition & Significance

Have you ever wondered why some things just happen spontaneously? Have you ever asked yourself why salt dissolves in water? In this lesson, you will understand the meaning of the Gibbs free energy and how it helps us predict if a chemical reaction will happen spontaneously.

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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