2. Is Matter Around Us Pure?

  • 2

    Is Matter Around Us Pure?

    The concept of 'pure' substances differs in everyday language and scientific terms, where pure substances contain only one type of particle, unlike common mixtures.

  • 2.1

    What Is A Mixture?

    This section explains the nature of mixtures, their classifications, and the distinction between homogeneous and heterogeneous mixtures.

  • 2.1.1

    Types Of Mixtures

    This section introduces the different types of mixtures, explaining the distinctions between homogeneous and heterogeneous mixtures.

  • 2.2

    What Is A Solution?

    A solution is a homogeneous mixture composed of a solute dissolved in a solvent, which can exist in various forms including liquids, gases, and solids.

  • 2.2.1

    Concentration Of A Solution

    This section explains the concept of concentration in solutions, detailing various methods for expressing it.

  • 2.2.2

    What Is A Suspension?

    A suspension is a heterogeneous mixture in which solid particles do not dissolve but remain suspended in a liquid.

  • 2.2.3

    What Is A Colloidal Solution?

    A colloidal solution consists of particles that are uniformly dispersed throughout another substance, appearing homogeneous but being a heterogeneous mixture.

  • 2.3

    Physical And Chemical Changes

    This section discusses the distinction between physical and chemical changes, emphasizing how these changes affect the composition of substances.

  • 2.4

    What Are The Types Of Pure Substances?

    The section outlines the classifications of pure substances, which include elements and compounds, and highlights their distinct characteristics.

  • 2.4.1

    Elements

    This section introduces the concept of elements as pure substances, explaining their properties and categorization.

  • 2.4.2

    Compounds

    A compound is a substance formed from two or more elements chemically combined in fixed proportions, displaying distinct properties from its components.