Theme 2 Introduction
Completion requirements
Theme 2: Introduction
Theme 2: Types of Chemical Reactions
Theme 2: Types of Chemical Reactions

The first theme in this course looked at understanding matter and chemical change. As you learned, when you mix chemicals, you get a chemical reaction. In this next theme, you will learn about the different types of chemical reactions as well as learn more about using the periodic table of elements to understand chemical formulas.
This theme includes five lessons:
- Lesson 5 — The Periodic Table of Elements
- Lesson 6 — Using the Periodic Table
- Lesson 7 — Types of Chemical Reactions
- Lesson 8 — Composition, Decomposition, and Combustion Reactions
- Lesson 9 — Endothermic and Exothermic Reactions
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