PDF Notes: chemistry notes 2

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    What defines a mixture?

    Contains two or more substances.

    What is a pure substance?

    Consists of a single type of particle.

    How does a solution differ from a suspension?

    Solution particles do not settle; suspension particles do.

    What is a colloidal solution?

    A heterogeneous mixture where particles scatter light.

    What happens in a saturated solution?

    No more solute can dissolve at a given temperature.

    What is the Tyndall effect?

    Scattering of light by colloidal particles.

    How are homogeneous and heterogeneous mixtures different?

    Homogeneous has uniform composition; heterogeneous does not.

    What characterizes a colloidal solution?

    Particles cannot be seen with the naked eye.

    What is the role of a solvent in a solution?

    It is the component present in the larger amount.

    What distinguishes a true solution from a colloidal solution?

    True solutions are transparent; colloids are translucent.

    What is a key property of suspensions?

    Particles can be separated by filtration.

    What happens to solute particles in a stable solution?

    They do not settle down over time.