Looking for a complete, engaging, and curriculum-aligned Mixtures lesson for your middle school science classroom? This ready-to-use Mixtures & Pure Substances resource is perfect for teaching homogeneous and heterogeneous mixtures in Grades 7-9. This no-prep science lesson includes a visually engaging slideshow that helps students clearly understand the differences between pure substances and mixtures, while building foundational knowledge in chemistry and environmental science. 🧪 WHAT