Write the method(s) that you would use to separate the following mixtures.
Sugar and chalk powder
Important Questions on Separation of Substances
(i) Salt and water
(ii) Husk and grain
(iii) Salt and sand
(iv) Water and kerosene
(v) Sugar and chalk powder
Which of the above mixtures are separated based on the weights of the substances that are found in the mixture?
Complete the tables.
Fill in the table with three substances that dissolve in water.
| Substance | Can it be separated from water again? | Method used to separate the mixture we get |
Complete the table.
Fill in the table with three solid substances that will not dissolve in water.
| Substance | Can it be separated from water again? | Method used to separate the mixture we get |
Many mixtures of substances exist in the environment. Place a 
next to the mixtures that occur naturally and a ✘ next to the mixtures that are made by humans.
Chalk dust and sawdust 
Many mixtures of substances exist in the environment. Place a 
next to the mixtures that occur naturally and a ✘next to the mixtures that are made by humans.
Sawdust and salt 
Many mixtures of substances exist in the environment. Place a next to the mixtures that occur naturally and a next to the mixtures that are made by humans.
Salt and water
Many mixtures of substances exist in the environment. Place a 
next to the mixtures that occur naturally and a ✘next to the mixtures that are made by humans.
Oxygen and nitrogen.
Many mixtures of substances exist in the environment. Place a 
next to the mixtures that occur naturally and a ✘next to the mixtures that are made by humans.
Water and oxygen 
