How do you separate poppy seeds from salt sand and iron fillings?

Answer 1

1) Use forceps to remove the poppy seeds

2) Place the remainder solid mixture on a petri-dish. Carefully, place a magnet underneath the dish to trap the iron fillings. While keeping the magnet still in place, tilt the dish to pour out the salt and sand into a test tube. Use a funnel to avoid dripping solid out on the floor or table. After removing the magnet, you'll have all your iron fillings intact and pure left behind on the dish.

3) Add water to the test tube containing the salt/sand mixture. Stir to ensure complete dissolution of the salt, then pass it through a filter paper to collect all the sand. Wash the sand with water and then keep it under vacuum to dry all of the sand.

4) Evaporate all of the water to collect your salt. Alternatively, you could remove some of the water to make a saturated solution and then you could place the solution in a refrigerator to crystallize out the sample.