Ch 16: ORELA General Science: Acids & Bases

About This Chapter

This chapter will have you ready for questions about acids and bases on the ORELA General Science test in no time! Our lessons cover topics like redox reactions, acid-base reactions, the Lewis definition of acids and bases, and more.

ORELA General Science: Acids & Bases - Chapter Summary

We can help you prepare for the ORELA General Science exam with this chapter on acids and bases contains. Short video lessons guide you through topics such as:

  • Arrhenius, Bronsted-Lowry and Lewis definition of acids and bases
  • Neutralization of acid-base reactions
  • Calculations using the dissociation constant
  • Autoionization of water
  • Calculating pH or pOH of a solution
  • Oxidation-reduction (redox) reactions

Our instructors strive to make the lessons efficient and enjoyable. You can watch the videos as many times as you need, or refer to the transcript for an alternative review. Each lesson has a corresponding multiple-choice quiz that helps you identify any weak areas that need more attention.

ORELA General Science: Acids & Basis - Chapter Objectives

The ORELA General Science test is a computer-based exam with 150 questions. You'll have three hours to complete all four sections of the test. The Physical Science section constitutes about 37% of the test and includes questions that assess your ability to analyze acid-base and redox reactions in terms of their reactants and products. Our chapter objectives have been written specifically to correlate with, and expound upon, these test objectives. Let us help you check acids and bases off your review list!

8 Lessons in Chapter 16: ORELA General Science: Acids & Bases
Acids and Bases

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.

The Arrhenius Definition of Acids and Bases

2. The Arrhenius Definition of Acids and Bases

In this lesson, you will learn the definition of Arrhenius acids and bases, discover some of their chemical properties and learn some examples. You will also learn about the difference between strong and weak Arrhenius acids and bases.

The Bronsted-Lowry and Lewis Definition of Acids and Bases

3. 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.

Neutralization and Acid-Base Reactions

4. Neutralization and Acid-Base Reactions

From this lesson, you will understand the neutralization process between acids and bases. Learn how a hydroxide ion from a base reacts with a hydronium ion from an acid to neutralize each other and form water. Discover what conjugate acids and bases are and what the definition of amphoteric is.

Dissociation Constant and Autoionization of Water

5. Dissociation Constant and Autoionization of Water

Learn the meaning of auto-ionization of water, sometimes called self-ionization, where water acts as a proton donor and acceptor to form both hydronium and hydroxide ions. Learn what the auto-ionization constant is and how to use it to determine the concentration of either hydroxide or hydronium ions in a solution when given the other value.

The pH Scale: Calculating the pH of a Solution

6. 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.

Redox (Oxidation-Reduction) Reactions: Definitions and Examples

7. Redox (Oxidation-Reduction) Reactions: Definitions and Examples

This short video will explain oxidation-reduction reactions, or redox reactions for short. The focus is on how electrons are transferred during redox reactions. Learn some neat mnemonic devices to help you remember when an atom is oxidizing or reducing.

What is Pyruvate? - Definition & Overview

8. What is Pyruvate? - Definition & Overview

Pyruvate is a very important biological molecule. It's involved in a number of biological processes and is essential in cellular respiration. In this lesson, we'll learn what pyruvate is and why it's important to all living cells.

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Other Chapters

Other chapters within the ORELA General Science: Practice & Study Guide course