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Question:

How to you separate iron fillings, salt, sand, and poppy seeds.?

I have to have the exact measurement of weight of salt and sand in solid form.Here are the materials I can use.Aluminum foilpetri-dishcotton ballsPipettesdistilled waterplastic forks/strawsfilter funnelsrubber stoppersfilter papertest tubesforcepsmagnetpaperclipspaper towelstransparent tapetissue paperNote: I am getting a mixture of poppy seeds, iron fillings, salt and sand in a bag.

Answer:

1) Use the forceps to remove the poppy seeds 2) Place the remainder solid mixture on a petri-dishCarefully, place a magnet underneath the dish to trap the iron fillingsWhile keeping the magnet still in place, tilt the dish to pour out the salt and sand into a test tubeUse a funnel to avoid dripping solid out on the floor or tableAfter removing the magnet, you'll have all your iron fillings intact and pure left behind on the dish3) Add water to the test tube containing the salt/sand mixtureStir to ensure complete dissolution of the salt, then pass it through a filter paper to collect all the sandWash the sand with water and then keep it under vacuum to dry all of the sand4) Evaporate all of the water to collect your saltAlternatively, 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 sampleCheers.

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