AQA A-Level Chemistry: Acids and Bases - Videos & Lessons

About This Chapter

Understanding the difference between acids and bases is an important part of chemistry and a concept you will encounter on the AQA A-Level Chemistry exam. This chapter will give you a great review of what acids and bases are through engaging video lessons and lesson quizzes.

AQA A-Level Chemistry: Acids and Bases - Chapter Summary

Knowing the difference between acids and bases requires you to have a strong understanding of the characteristics of each. If you want to pass the AQA A-Level Chemistry exam, you will have to be familiar with this chapter. The topics you will be studying include the following:

Acids and bases
Bronsted-Lowry and Lewis descriptions
Weak acids, bases and buffers
The pH scale
Water properties
Titration of strong and weak acids and bases

The video lessons in this chapter are designed to be viewed on home computers and also mobile devices. This allows you to study at home or away from home with a reliable Internet connection. When you feel ready, there are also self-assessment quizzes included with each lesson that allow you to test yourself on what you have studied. and prepare you for the types of questions you will encounter on the AQA A-Level Chemistry exam.

7 Lessons in Chapter 14: AQA A-Level Chemistry: Acids and Bases

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1. Acids and Bases

Have you ever wondered how we measure the acidity of liquids? Check out this lesson to see how acids and bases are measured on a pH scale and how they relate to neutral solutions, such as water.

2. The Bronsted-Lowry and Lewis Definition of Acids and Bases

Learn the Bronsted-Lowry and Lewis definitions of an acid and base. Discover how these theories differ from each other and from the Arrhenius theory of an acid and base. Learn how to identify an acid in terms of proton donation and a base as a proton acceptor, and explain what a conjugate acid or base is.

3. Weak Acids, Weak Bases, and Buffers

This lesson covers both strong and weak acids and bases, using human blood as an example for the discussion. Other concepts discussed included conjugate acids and bases, the acidity constant, and buffer systems within the blood.

4. The pH Scale: Calculating the pH of a Solution

Learn the history of the pH scale, how to describe it and why it is used by scientists. Discover how to calculate the pH of an acid or base solutions given either the hydroxide ion concentration or the hydronium ion concentration. Learn how to start with the pH and calculate the hydroxide and hydronium ion concentrations.

5. Properties of Water

Why does ice float? Why can water rise on its own against gravity in a small tube? Find out how these mysterious properties of water can be explained by hydrogen bonds.

6. Titration of a Strong Acid or a Strong Base

Discover what titration is and how to calculate the concentration of an acid or base that has been titrated to equivalence. Learn the meaning of titrant, standard solution and equivalence point. Study titration curves and learn how to determine pH during any point of a titration between a strong acid and strong base.

7. Titrations with Weak Acids or Weak Bases

Learn about titrations with weak acids or weak bases in this lesson. Study their titration curves and learn about some of their important characteristics. Learn how to calculate pH during titrations involving weak acids and strong bases.

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Practice Final Exam

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