Welcome to the exciting world of Chemistry!

Chemistry is the branch of science that helps us understand the materials that make up our world—how they are formed, how they interact, and how they change. From the air we breathe to the food we eat, from soap and cleaning agents to fuels and medicines, chemistry is involved in nearly every aspect of our daily lives.

In this Grade 9 textbook, you will begin your journey into the study of chemistry. You will learn about the structure of matter, the periodic table, chemical reactions, acids and bases, and much more. These topics will help you build a strong foundation in science and prepare you for further studies.

Chemistry is not only about theory—it is also a practical subject. Throughout this book, you will find activities, experiments, and questions that will help you apply what you learn in real life. As a student in Ethiopia, you will also explore how chemistry relates to your environment, culture, and local resources.

By the end of this course, you will be able to:

• Understand the basic concepts and principles of chemistry
• Conduct simple scientific investigations
• Use scientific methods to solve problems
• Appreciate the role of chemistry in society and the environment

We hope this book inspires your curiosity and helps you see the world through a new scientific lens. Let’s explore the wonders of chemistry together!