Is Matter Around Us Pure?

The chapter "Is Matter Around Us Pure?" explores the classification of matter into pure substances and mixtures. Pure substances consist of a single type of particle, such as elements and compounds, while mixtures contain two or more substances that retain their properties. Mixtures can be homogeneous (uniform composition) or heterogeneous (distinct components). Techniques like filtration and distillation are used to separate components in mixtures. Understanding the purity of substances is crucial in chemistry and various applications.