This workbook provides a well-thought-out and time-saving foundation for successful use in chemistry classes at the upper secondary level (grades 11-13). The immediately usable photocopiable templates allow for a direct start to lessons—without the need for extensive preparation. At the same time, the material is excellent for reviewing, deepening, and securing central content from the fields of inorganic chemistry, organic chemistry, as well as elements and substances. Whether in regular classes, independent work, station learning, for homework, or in tutoring: the versatile learning modules support sustainable learning at different levels. Thanks to integrated solutions, independent monitoring of learning progress is always possible. Chemistry is conveyed in an understandable and practical manner: this workbook demonstrates that complex content does not have to be complicated. It systematically guides through central topics such as states of matter, chemical formulas, molecules, metals, hydrocarbons, plastics, as well as air and its components. Both the fundamentals of inorganic chemistry and the content of organic chemistry are clearly explained. Key focuses include chemical reactions, energy changes, catalysts, reaction rates, and chemical equilibrium. Important areas such as acids and bases, oxidation, oxidation numbers, and redox reactions are also presented in an understandable way and reinforced through varied tasks. Special attention is given to the connection between theory and practice: everyday examples and references to industry and environmental protection make the content tangible and promote the understanding of complex relationships. The clearly structured presentation facilitates both teaching and independent learning. Teachers benefit from clear learning modules and differentiated task formats, while students are encouraged to recognize scientific connections.