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