This book is designed for high school chemistry students, exam preparation, and self-study, offering clear explanations, structured learning, and abundant practice. By the end of this book, students will be able to confidently identify, name, explain, and apply concepts related to hydrocarbons, alkanes, alkenes, and alkynes. Hydrocarbons are a fundamental group of organic compounds composed entirely of carbon and hydrogen atoms. They form the basis of organic chemistry and play a vital role in