A significant challenge for every chemistry teacher, as creating suitable materials is often very time-consuming. With the three-tiered differentiated materials in this book on the topic of substances and their properties, you can meet this challenge in heterogeneous classes with minimal effort. Through varied worksheets and practical experiments, your students will first explore the important properties of substances using their senses and laboratory equipment. They will then apply the insights gained and expand on these fundamentals by conducting experiments independently. The unit concludes with a look at the particle model. Each of the four chapters begins with didactic notes, including safety instructions, and a tabular lesson plan. Following that are all the necessary handouts.