We are constantly surrounded by tiny little bits of stuff. This is called matter! Matter is comprised of small units called atoms, and when atoms join with other atoms, they form molecules. Atoms and molecules are the focus of this fascinating book, in which readers will learn about their scientific history, size, chemical reactions, and more. Eye-catching graphics and diagrams paired with achievable text make for an informative and entertaining reading experience from start to finish. Readers are sure to further their curriculum studies from outside of the classroom with this book!