Ch 18: AQA A-Level Chemistry: Thermodynamics

About This Chapter

Explore the engaging videos in this chapter to enhance your preparations for the AQA A-Level Chemistry test. Make sure you fully understand thermodynamics by taking advantage of expert instruction, lesson quizzes and a chapter exam.

AQA A-Level Chemistry: Thermodynamics - Chapter Summary

Studying for a test like AQA A-Level Chemistry can feel overwhelming at times, which is why it's great to take every measure possible to prepare for the day of the exam. This chapter can help by ensuring you're able to answer thermodynamics questions. Once you've reviewed the lessons, you will be ready to:

  • Describe state functions in thermochemistry
  • Define enthalpy, and explain the second law of thermodynamics
  • Share details about constructing Born-Haber cycles to calculate lattice enthalpies from experimental data
  • Explain the process of predicting the entropy of physical and chemical changes
  • Discuss free energy and predicting the spontaneity of a reaction
  • Provide details about the relationship between enthalpy, free energy and entropy
  • Analyze electrochemistry

Benefit from the conveniences this chapter offers as you make time to prepare for the exam. Explore the lessons in more than one format, video or transcript, and watch them in any sequence you desire. Video lessons average just 10 minutes each, which makes it easy to fit your exam studies into a busy schedule. Test your comprehension of thermodynamics by taking short quizzes before, during or after reviewing the lessons. If you don't have the ability to review this chapter from your home computer, take the lessons with you by accessing them from your smartphone or tablet.

8 Lessons in Chapter 18: AQA A-Level Chemistry: Thermodynamics
Test your knowledge with a 30-question chapter practice test
State Functions in Thermochemistry

1. State Functions in Thermochemistry

This lesson defines state functions and explains why state functions are so useful in thermochemistry and thermodynamics. You'll also see a few examples of common state functions.

Enthalpy: Energy Transfer in Physical and Chemical Processes

2. Enthalpy: Energy Transfer in Physical and Chemical Processes

This video explores the relationship between chemistry and energy. We learn the general properties of energy and the concepts of temperature and heat. We will learn about energy flow and consider the enthalpy change during chemical reactions.

Second Law of Thermodynamics: Entropy and Systems

3. Second Law of Thermodynamics: Entropy and Systems

In this lesson, we'll learn about the second law of thermodynamics. By studying this law, you'll understand how energy works and why we're all moving towards eventual chaos and disorder.

Born-Haber Cycles: Calculating Lattice Enthalpy

4. Born-Haber Cycles: Calculating Lattice Enthalpy

In this lesson, you'll learn about lattice energy, lattice enthalpy, and the Born-Haber cycle. Learn how to calculate lattice enthalpy using the Born-Haber cycle and predict covalent character in an ionic compound.

Predicting the Entropy of Physical and Chemical Changes

5. Predicting the Entropy of Physical and Chemical Changes

Ever wonder why your bedroom always ends up a mess within hours of you tidying up? That is the magic of entropy. In this lesson, you'll learn why disorder is the natural state of matter and how we can predict entropy change in a physical or chemical reaction.

Free Energy: Predicting the Spontaneity of a Reaction

6. Free Energy: Predicting the Spontaneity of a Reaction

Ever heard the phrase 'pushing Jell-O uphill on a hot day'? This describes a hopeless task. In this lesson, we will predict hopeful and hopeless reactions. Or put scientifically, predicting spontaneous (hopeful) and non-spontaneous (hopeless) reactions.

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

7. 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.

Electrochemistry: Free Energy and Cell Potential Energy

8. Electrochemistry: Free Energy and Cell Potential Energy

Our modern lives are totally dependent on electricity. In this lesson, we learn about electricity spontaneously produced by electrochemical cells or batteries. We make the link between the potential energy they produce and Gibbs free energy.

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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