Atoms are the basis of all elements. They're sometimes called the building blocks of matter, helping us visualize how substances can be broken down into extremely small particles. Understanding atoms, their unique structures, and their particular properties are foundations of chemistry. This accessible book explains the key concepts budding scientists need to know about atoms as well as the protons, neutrons, and electrons within them. Essential curricular information is supported by "Learn More" fact boxes, labeled diagrams, and a summarizing graphic organizer.