Create a Quiz. The academic subject for which the text must be created - Science. It should be for students studying at Year or Grade 9 (age...
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Which subjectScience
What age groupYear or Grade 9
What topicMixtures
Question typesOpen-ended
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Test your knowledge on mixtures in this science quiz.

  1. Define a mixture in terms of chemistry.

  2. Give an example of a homogeneous mixture that you can find in your home.

  3. What is the difference between a solution and a suspension?

  4. How can you separate a mixture into its components? Give two examples of separation techniques.

  5. What is the Tyndall effect? How can it be used to distinguish between a solution and a suspension?

Answers:

  1. A mixture is a combination of two or more substances that are not chemically combined.
  2. Example of a homogeneous mixture can be saltwater.
  3. A solution is a homogeneous mixture where solute particles are too small to be seen, while a suspension is a heterogeneous mixture where solute particles can be seen and tend to settle to the bottom.
  4. A mixture can be separated by physical means. For example, a magnet can be used to separate iron filings from sand. Distillation can also be used to separate a mixture of two liquids with different boiling points.
  5. The Tyndall effect is the scattering of light by colloidal particles in a solution or suspension, which makes the path of the light visible. This effect can be used to distinguish between a solution and a suspension because a solution will not exhibit the Tyndall effect, while a suspension will.