Activity 5 Directions : Encircle the correct answer. Identify the methods of separating mixtures. Write the correct answer on the blank before the number -
7. This process involves pouring the liquid component into another container without disturbing the sediment at the bottom. (Filtration, Decantation, Evaporation)
8. The liquid components dry up when heated or exposed under the sun in this process of separating mixtures. (Evaporation, Decantation, Filtration)
9. This process involves separating solid particles from a liquid substance using a piece of cloth. (Decantation, Filtration, Evaporation)
10. Materials made of iron mixed with other materials in a mixture can be separated using this method, (Using a magnet. Sieving. Filtration)
11. This method is used to separate bigger solid components from finer ones. (Filtration, Sieving, Evaporation)
Answers
Explanation:
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The correct answer is written on the blank before the number as follows -
7. Decantation - This process involves pouring the liquid component into another container without disturbing the sediment at the bottom.
In the decantation method, two immiscible liquids can be separated as the liquid with lesser density floats about the liquid with greater density. Hence, the liquid at the bottom should not be disturbed and the floating liquid component can be transferred to another container.
8. Evaporation - The liquid components dry up when heated or exposed under the sun in this process of separating mixtures.
When liquid is heated or exposed to the sun, the temperature of the liquid increases. Once it reaches boiling point, the liquid will be converted into a gaseous state.
9. Filtration - This process involves separating solid particles from a liquid substance using a piece of cloth.
Solid particles can be separated out by allowing the liquid to go through a piece of cloth.
10. Using a magnet - Materials made of iron mixed with other materials in a mixture can be separated using this method.
The magnet can attract iron, hence iron can be separated with the use of a magnet.
11. Sieving - This method is used to separate bigger solid components from finer ones.
The solid components are retained on the sieve while the finer particles will go through the sieve.