From the composition of rocks and minerals to the constant changes happening in the human body, chemistry is all around us. Every day, scientists study nature and explore chemicals within laboratories, developing new experiments and processes to better understand the workings of our world. Explore the science behind substances and meet the chemists who have studied them throughout history. Engaging photos and real-world examples help explain chemistry, while an encyclopedic-entry-style format makes the text approachable and highly browsable. Final comprehension questions encourage reflection on what readers have learned.