Question

What will happen when a suspension of chalk and water is subjected to filtration ? Explain the phenomenon involved.

Answer 1

chalk powder and water form a heterogeneous mixture, hence it is possible to separate them using physical processes. 
Chalk powder doesn't mix with water and remains suspended as a residue in the bottom of the vessel in which the mixture in contained.
Thus, we can use simple separating techniques such as ' filtration ' for this mixture.
Here is the procedure-
1. Collect the chalk and water mixture in a test tube.
2. Arrange the filter paper in shape of a funnel at the mouth of a beaker.
3. Make sure that the filter paper is properly placed.
4. Slowly pour the mixture on the filter paper funnel.
5. You'll now see that the chalk remains of the filter paper as a residue and the clear water filters out and gets collected in the beaker

Answer 2

Answer: The two will easily get separated.

Explanation:

The chemical name for chalk powder is calcium carbonate. The solubility of this compound in water is very low, therefore it remain suspended in the aqueous medium.

Suspended particles are easily separable by physical processes and filtration is a physical process. In this process, the suspension is passed through a sieve, The particles with small particle size, pass through the sieve and the particles with large size, remain on the sieve.

Hence, a mixture of chalk powder and water can be easily separated through filtration process.