Chemistry Chapter 12: Mixtures and Separation Techniques
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Questions and Answers

What defines a mixture?

  • A solution where one substance completely dissolves in another.
  • Two or more elements combined chemically.
  • A single substance that cannot be separated into its components.
  • Two or more substances mixed together without chemical bonding. (correct)

    • Which method is used to separate liquids that do not mix together?

  • Filtration
  • Sieving
  • Evaporation
  • Decanting (correct)

    • What is the residue in a filtration process?

  • The liquid that passes through the filter paper.
  • The mixture before filtration.
  • The smaller particles that pass through the filter.
  • The solid that remains on the filter paper. (correct)

    • What happens to particles in a suspension when allowed to settle?

    <p>They settle to the bottom as sediment. (A)</p> Signup and view all the answers

    Which of the following describes sieving?

    <p>Separating materials by their particle sizes. (B)</p> Signup and view all the answers

    What is the primary purpose of evaporation in separating mixtures?

    <p>To remove soluble solids from a liquid (C)</p> Signup and view all the answers

    Which component is NOT necessary for the distillation process?

    <p>Chromatography paper (D)</p> Signup and view all the answers

    What is the role of the Liebig condenser in distillation?

    <p>To cool the gas back into a liquid (D)</p> Signup and view all the answers

    What does a chromatogram represent?

    <p>The pattern of separation of substances from a mixture (C)</p> Signup and view all the answers

    Which of the following best describes boiling in contrast to evaporation?

    <p>Boiling changes the entire volume of the liquid into gas at once (D)</p> Signup and view all the answers

    What type of mixture components does chromatography primarily separate?

    <p>Different substances based on rate of travel (D)</p> Signup and view all the answers

    What material is used as the absorbent in paper chromatography?

    <p>Chromatography paper (D)</p> Signup and view all the answers

    How does the boiling point affect the separation in distillation?

    <p>Lower boiling point liquids evaporate first (D)</p> Signup and view all the answers

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