Chapter 2: Is Matter Around Us Pure? Test Test Time Explore various categories of non-fiction books. Types of Matter Understanding pure substances and mixtures as the two main types of matter. What is a Mixture? Definition and properties of mixtures — homogeneous and heterogeneous. Types of Mixtures Distinction between homogeneous mixtures (solutions) and heterogeneous mixtures. Solutions Definition, components (solute, solvent), concentration, types of solutions. Suspensions Definition, properties, and examples of suspensions as heterogeneous mixtures. Colloids Definition, types, properties like Tyndall effect and Brownian motion. Separation of Components Various methods of separation: filtration, evaporation, decantation, centrifugation, etc. What is a Pure Substance? Definition of pure substances — elements and compounds with fixed composition. Elements and Compounds Definition, classification of elements (metals, nonmetals, metalloids), and compounds.