Page 1 - Home Assignment-3. Practical Worksheet

SAI International School
Subject-Chemistry

Ch-Is Matter around us pure?
Differentiating different types of solutions on the basis of
Transparency, Filtration & stability.
Practical Worksheet

Name: AdmNo: Class/Sec: ( )
Dt:_________________

1.When egg albumin is added to water the clear solution becomes turbid. How
would you test to confirm the type of solution formed ?
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2. When you are asked by your science teacher to prepare a solution from the
following solutes, which one would you prefer to prepare the solution.
Egg albumin , Sulphur powder , Barium sulphate and Alum . What would have
you got if you would have used egg albumin?
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3. After you prepared the following solutions,which one did settle down when kept
undisturbed for some time?
blood in water , muddy water , copper sulphate solution & Egg albumin in water.
What type of mixture is it?

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4.While doing the experiment, one of your friend added a substance `X’ to distilled
water. On stirring thoroughly the aqueous solution was left to stand for sometime. It
was observed that its particles began to settle at the bottom. By this information
what do you infer about the solution ? What would happen if a beam of light is
passed through this solution ?
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