Colloids
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Questions and Answers

Which of the following best describes a colloid?

  • A mixture that settles down when left undisturbed
  • A mixture that can be separated by filtration
  • A mixture with particles too small to be seen (correct)
  • A homogeneous mixture
  • Which technique can be used to separate colloidal particles?

  • Centrifugation (correct)
  • Distillation
  • Evaporation
  • Filtration
  • What happens to a beam of light passing through a colloid?

  • It becomes invisible
  • It gets absorbed by the particles
  • It scatters and becomes visible (correct)
  • It passes through without any change
  • Study Notes

    Colloids

    • A colloid is a mixture in which one substance consists of microscopically dispersed insoluble particles that are distributed throughout another substance.
    • The particles in a colloid are larger than those in a solution, but smaller than those in a suspension.

    Separating Colloidal Particles

    • Centrifugation is a technique used to separate colloidal particles from a mixture.

    Light Scattering in Colloids

    • When a beam of light passes through a colloid, it scatters in all directions due to thepresence of dispersed particles, a phenomenon known as Tyndall effect.

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    Description

    Test your knowledge on colloids and their properties in this informative quiz. Learn about the characteristics of colloids and how they differ from other types of mixtures. Explore the methods used to determine if a substance is a colloid and discover the special techniques used to separate colloids from mixtures.

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