Activity & Practical on Separation of Mixture | Separation of sand from the mixture by Filtration Method | Class 9 Science-EduGrown
Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. … The water can also be recovered as well as the salt if the water vapour is trapped and cooled to condense the water vapour back into a liquid. This process is called distillation.
Aim
To separate the components of a mixture of sand by Filtration
MATERIALS REQUIRED
- A China dish, tripod stand, a wire gauze, a bunsen burner, glass funnels, cotton, a glass rod, a beaker, filter paper, a clamp stand.
Chemicals Required
- Sand and distilled water.
THEORY
- Natural substances are not chemically pure. Different methods of separation are used to get individual components from a mixture. But, before separating any components from a mixture one must have sound knowledge of its physical and chemical properties so that separation can be done with ease.
- Sand and water form a heterogeneous mixture which can be separated easily through simple physical methods of separation.
PROCEDURE
Sedimentation and Decantation/Filtration
Separation of sand from the mixture
- The mixture left in the last step of sublimation is transferred into a beaker.
- Add 5-10 mL of distilled water into the mixture (water should be sufficient to dissolve the salt into it) and stir it with glass rod.
- Make a cone of filter paper as shown in the diagram. Fix this cone in the glass funnel. Place the funnel over tripod stand or clamp it on the stand. Place a clean beaker under the stem of the funnel.
- Allow the mixture to stand so that sand particles settle down in the beaker.
- Now transfer the solution into the funnel with filter paper slowly for filtration.
- The residue collected on the filter paper is sand and the filtrate is salt solution.
- Collect the sand from the beaker and filter paper, dry it to get the sand completely separated from the mixture.
OBSERVATIONS
Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. … The water can also be recovered as well as the salt if the water vapour is trapped and cooled to condense the water vapour back into a liquid. This process is called distillation.
RESULT
sand and water get seprated
PRECAUTIONS
- Be careful during heating experiments.
- Prolonged heating should be avoided.
- Keep the flame low if you are using bunsen burner.
- Use clean and dry apparatus.
- Use distilled water for making solution.
- While filtering ensure that the filter paper cone does not tear up and allow the mixture to pass slowly through it.
- During sublimation, you can keep an extra plugged funnel to collect the dense white fumes.
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