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Separation Of Substances

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  • Define Winnowing with an example
    Separating by wind or air...Eg. Random
  • Define Sieving with an example.
    Sieving allows the fine flour particles to pass through the holes of the sieve while the bigger particles or impurities remain on the sieve.
  • Define Density
    It is the amount of compactness between 2 substances
  • Which of these can be separated using handpicking
    For separating different kinds of vegetables from the mixture of vegetables in the basket.
  • Define Decantation
    Separation process in which two immiscible liquids are separated.
  • Give 4 examples of soluble substances
    Salt, Sugar, Vinegar, Detergent, etc.
  • Give 8 examples of daily used materials
    Wood, Plastic, Metal, Glass, Cotton, Leather, Wool, Rubber, etc.
  • Name 5 groups into which materials can be sorted
    Soluble, Insoluble, Hard, Rough, Opaque, Translucent, Transparent, etc.
  • What is the process of separating insoluble substances called?
    Sedimentation
  • Oil dissolves in water, true or false, if true explain why? If False, explain why?
    True, because oil and water don't have the same density, (they both have a different mass).
  • Give 2 examples of insoluble substances
    Oil, sand, etc.