Separation of substances Worksheet-7

Separation of substances Worksheet-7

 

Fill in the blanks:

  1. The process of beating harvested crops to separate seeds from husk is called _____.
  2. The method used to separate pieces of chaff from the grain by wind or blowing air is called_____.
  3. The process of separating insoluble solids suspended in a liquid by allowing them to settle down is called _____.
  4. The process of pouring out the clear upper liquid without disturbing the sediments is called ____.
  5. The process by which an insoluble solid is separated from a liquid by passing the mixture through a filtering device is called _____.
  6. A solution that can dissolve no more of solute is called a _______ solution.
  7. Changing of a liquid into gaseous form is called______.
  8. When matter changes from its gaseous state into its liquid state, it is called _____.
  9. A change where substances mix completely with the liquid they have been added to and cannot be separated easily is called _____.
  10. ____ is the ability of a substance to dissolve in a given liquid.
  11. Grains and husk can be separated using _____ process.
  12. When small stones need to be removed from rice, we use the process of ______.
  13. In sedimentation, the upper liquid is called ______.
  14. By _____ process, stones and pebbles can be separated from sand at construction sites.

 

Answer:

  1. Threshing
  2. Winnowing
  3. Sedimentation
  4. Decantation
  5. Filtration
  6. Saturated
  7. Evaporation
  8. Condensation
  9. Dissolving
  10. Solubility
  11. Threshing
  12. hand-picking
  13. supernatant
  14. Sieving