Unit 1: Introduction to Chemistry

Chapter 1: Introduction to Chemistry

This chapter sets the stage for everything we’ll study in chemistry. You’ll explore what matter is, how we measure it, and why chemistry is known as the “central science.” We’ll also dive into how scientists think—learning about the scientific method, experiments, and the difference between a theory and a law. Along the way, you’ll discover how two unrelated chemicals—ozone and CFCs—help us understand real-world problems and the power of chemistry to solve them.

Chapter 1 Files

Chapter 2: Data Analysis

In this chapter, you’ll learn how chemists measure the world around them using the SI system, scientific notation, and conversion factors. You’ll explore the importance of accuracy and precision in experiments, practice calculating density and percent error, and learn how to round and count significant figures like a pro. We’ll wrap it all up by turning raw data into meaningful visuals using graphs. It’s the math and measurement foundation every scientist needs to do chemistry right.

Chapter 2 Files

Chapter 3: Matter

This chapter explores how matter behaves, what it’s made of, and how we classify and change it. You’ll learn the difference between physical and chemical properties, how to tell a solid from a liquid or gas, and why mixing stuff doesn’t always mean a chemical reaction happened. We’ll also cover mixtures, elements, compounds, and key scientific laws like the conservation of mass and definite proportions. It’s all about understanding what matter is—and what it isn’t.

Chapter 3 Files