Question

Q- How would you separate a mixture of chalk and water?

Answer 1

Chalk is insoluble in water and forms a heterogeneous mixture when mixed with water. As chalk is heavier, therefore it will settle at the bottom of the mixture when it is left undisturbed for sometime. Thus, water can be separated from chalk powder by sedimentation, decantation and filtration.

Answer 2

Chalk powder is a carbonate compound, insoluble in water. Because of this property of chalk powder, it is easy to separate it from water. The mixture containing chalk powder and water is allowed to get filtered. After filtration, the retentate obtained is chalk and the filtrate obtained is water without chalk.