About This Chapter
Chemical Changes - Chapter Summary
This comprehensive chemistry chapter breaks down different types of chemical changes and reactions. Inside the chapter, you'll find short and engaging lessons that explain concepts related to chemical changes, including electrolysis, titration, neutralization and oxidation. Our expert chemistry instructors also outline many types of chemical reactions, such as anode half-cell and redox reactions.
By the end of the chapter, you should be able to:
- Outline the process of oxidation
- Understand the reactivity of metals on the periodic table
- Define several types of reactions, including redox, single-displacement, cathode, anode half-cell and acid-base reactions
- Describe the reactions between various metals and acids
- Identify common salt solubility rules
- Analyze titrations with weak/strong acids and bases
- Explain the electrolysis of aqueous solutions and molten ionic compounds
After completing a lesson, try the accompanying self-assessment quiz to see how well you understand the material. Lesson transcripts can be printed for offline study, and you can submit questions to our instructors if they arise. Your course Dashboard feature keeps track of your progress throughout the chapter as well as your quiz scores. Finally, we've made these resources accessible on any computer or mobile device so you can study wherever you are, whether you're in the office, on-the-go, at school or at home.
1. What is Oxidation? - Definition, Process & Examples
In this lesson, learn about oxidation and its process, and examine some examples of oxidation, including the mystery of browning fruit. Then, measure what you've learned with a quiz.
2. Metals on the Periodic Table: Definition & Reactivity
Look around for a second...how many metallic things can you see? Generally when we think of metals, we think of substances that are shiny and durable; however, they're also in our food and in our bodies. Learn what makes a metal a metal and why metals are special.
3. 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.
4. Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents
Learn how to identify an oxidizing agent and a reducing agent and how the loss or gain of electrons applies to each one. Learn the relationship between an oxidized or reduced substance and the oxidizing or reducing agent associated with it. Discover what steps to take to balance a redox reaction.
5. Single-Displacement Reaction: Definition & Examples
There are so many chemical reactions that occur around us that we classify them into different types. In this lesson, we will discuss single-displacement reactions, one of the main types of chemical reactions.
6. Reactions of Acids with Metals
Acids and metals react in single replacement reactions, which are oxidation-reduction reactions. In this lesson, we will learn about several single replacement reactions involving various metals with hydrochloric acid and sulfuric acid.
7. 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.
8. Solubility of Common Salts: Predicting Reaction Outcomes
Ever wondered why some salts dissolve in water and others don't? In this lesson you will learn about some simple salt solubility rules. Using these rules, you will be able to predict the products of many chemical reactions.
9. 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.
10. 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.
11. Electrolysis: Definition, Types & Uses
Electrolysis is an important chemical process that is used in many different industries. In this lesson, learn about how electrolysis works and a few applications of electrolysis.
12. Electrolysis of Molten Ionic Compounds
This lesson looks into how molten ionic compounds can be electrolyzed. It also provides an understanding on how metals such as aluminum and sodium can be extracted from molten compounds using electrolysis.
13. Electrolysis of Aqueous Solutions
This lesson will talk about electrolysis of aqueous solutions of some single ionic compounds with their half cell reactions. It will also discuss an example of electrolysis with inert electrodes.
14. Cathode and Anode Half-Cell Reactions
Learn how to write electrode half-reactions for cathodes and anodes. Discover how to calculate cell voltage potential when given a table of standard electrode potentials. Learn how to prevent corrosion using redox concepts and how to protect metal by cathodic protection.
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Other chapters within the GCSE Chemistry: Practice & Study Guide course
- Steps of the Scientific Method
- Analyzing & Evaluating Scientific Data
- The Process of Scientific Thinking
- Mathematics in Science
- Scientific Vocabulary & Measurement
- Atoms & Atomic Structure
- Properties of Elements, Compounds & Mixtures
- Understanding Elements & Periodicity
- Block & Group Elements
- Chemical Bonds Overview
- Molecular Types & Structures
- States of Matter Overview
- Quantitative Chemistry
- Energy Changes in Chemical Reactions
- Rate & Extent of Chemical Changes
- Basics of Organic Chemistry
- Chemical Analysis
- Chemistry of the Atmosphere
- Using Natural Resources
- GCSE Chemistry Flashcards