Ch 21: TExES Science 7-12: Energy Transformations

About This Chapter

In this chapter, you'll find video lessons and transcripts that help you get up to speed on energy transformations. Complete this chapter to prepare for related questions on the TExES Science 7-12 exam.

TExES Science 7-12: Energy Transformations - Chapter Summary

Make sure you fully comprehend energy transformation topics for the TExES Science 7-12 exam by watching these video lessons on heat, reactions, free energy and more. These lesson will help you to be able to:

  • Define and explain heat
  • Compare exothermic and endothermic reactions
  • Explain the significance of Gibbs free energy
  • Detail the relationship between enthalpy, free energy and entropy
  • Measure heat transfer and capacity through calorimetry

Set yourself up for success when prepping for the exam by using this interactive chapter. View the video lessons to quickly review or learn new things about energy transformations. See how much of the information you've retained by using the self-assessment quizzes. Access to these resources from a smartphone, computer or tablet.

5 Lessons in Chapter 21: TExES Science 7-12: Energy Transformations
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.

Endothermic and Exothermic Reactions

2. 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.

Gibbs Free Energy: Definition & Significance

3. 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.

The Relationship Between Enthalpy (H), Free Energy (G) and Entropy (S)

4. The Relationship Between Enthalpy (H), Free Energy (G) and Entropy (S)

In this video lesson, we'll study free energy (G) and its relationship to enthalpy, entropy and temperature. You'll also learn why free energy (G) is the single most useful criterion for predicting the spontaneity and direction of a chemical reaction.

Calorimetry: Measuring Heat Transfer and Heat Capacity

5. Calorimetry: Measuring Heat Transfer and Heat Capacity

This video lesson explains the technique of calorimetry used to measure heat transfer in chemical reactions. You will see how different materials have different specific heat capacities. You will learn how to carry out heat calculations using a simple equation.

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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