Classifications of Matter Quiz
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Questions and Answers

What is a mixture?

  • A combination of molecules
  • A substance with varying compositions (correct)
  • A substance with uniform composition
  • A substance only made of one kind of atom
  • What is an example of a heterogeneous mixture?

    Garden Salad

    What is an element?

    A substance composed of only one kind of atom

    What is a colloid?

    <p>A mixture that appears homogeneous but is heterogeneous upon testing</p> Signup and view all the answers

    What is an example of a homogeneous mixture?

    <p>Brine (saltwater)</p> Signup and view all the answers

    Which state of matter has a very rigid molecular structure?

    <p>Solid</p> Signup and view all the answers

    What process turns a solid into a liquid?

    <p>Melting</p> Signup and view all the answers

    What is the process by which a liquid turns into gas?

    <p>Evaporation</p> Signup and view all the answers

    What happens during ionization?

    <p>Adding energy to a gas charges the molecules into ions</p> Signup and view all the answers

    What is condensation?

    <p>Transferring energy in gas molecules to form liquid</p> Signup and view all the answers

    What is sublimation?

    <p>Dissipating energy from a solid directly into gas</p> Signup and view all the answers

    Study Notes

    Classifications of Matter

    • Mixture: Substance with varying compositions

      • Heterogeneous mixture: Components are identifiable; examples include garden salad and trail mix.
      • Colloid: Observed as homogeneous but behaves as heterogeneous; examples include milk and styling gel.
      • Homogeneous mixture (Solution): Very uniform composition; examples include brine (saltwater) and orange juice drink.
    • Pure Substance: Uniform composition

      • Element: Composed of only one kind of atom; examples include Darmstadtium (Ds) and Hydrogen (H).
      • Compound: Composed of molecules made of two or more elements; examples include Aqua Fortis (HNCO3) and Water (H2O).

    Phases of Matter

    • Solid: Defined appearance and shape with little to no molecular movement; exhibits a rigid structure. Example: diamond.
    • Liquid: Has molecular movement determined by flow rate; takes the shape of its container. Example: glass of lemon juice.
    • Gas: High molecular movement; looser structure than liquid and behaves similarly. Example: air.
    • Plasma: High molecular movement created from heated gas; gives off colored glow when energizing molecules. Example: neon lights.

    Phase Transitions

    • Melting: Adding heat to a solid converts it to a liquid (e.g., melting iron).
    • Evaporation: Adding heat to a liquid breaks its molecular bonds, converting it to gas (e.g., evaporating saltwater).
    • Ionization: Adding heat to a gas charges molecules into ions, forming plasma (e.g., glowing neon gas).
    • Recombination (Deionization): Removing heat converts plasma back to gas; example includes neon returning to gaseous state upon cooling.
    • Condensation: Transferring energy from gas to surroundings allows gas molecules to bond into a liquid (e.g., water vapor condensing to form clouds).
    • Freezing: Transferring heat from liquid to surroundings causes molecules to bond and form a solid (e.g., liquid mercury solidified with liquid nitrogen).
    • Sublimation: Adding energy causes a solid to transition directly to gas without becoming liquid.

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    Classifications of Matter PDF

    Description

    Test your knowledge on the classifications of matter including mixtures and pure substances. Explore the differences between heterogeneous and homogeneous mixtures, and gain a deeper understanding of elements and their unique properties. Perfect for science students seeking to master this fundamental concept!

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