Introduces the world of protons, neutrons, and electrons. Learn how atoms and molecules combine to form ordinary objects, such as a chair, the water in a glass, and even people.

Timeline -- Chemistry matters! -- Atoms, elements, and the periodic table -- State of matter : gases, liquids, and solids -- Changing states of matter -- Compounds, mixtures, and solutions -- Chemical reactions -- Acids and bases -- The nucleus and radioactivity -- Other branches of chemistry.