Use the magnet to remove the iron- Spread the chalk powder, salt and iron mixture on a flat surface. Wrap the magnet in the paper towel. Use the magnet to remove the iron by pulling it across the surface of the mixture. The filings stick to the magnet while the chalk and salt are left behind. Remove the paper towel from the magnet to collect the filings.

To separate the chalk powder and salt-

(a) First, add water to the salt and chalk solution.

(b) Stir until the salt dissolves.

(c) The chalk will form a layer on top of the water, allowing you to scoop it out with a spoon.

(d) Then, let the water evaporate on a hot plate, which will cause the salt to be collected in the container.