How do you seperate salt, sand, and iron fillings?

Salt would dissolve in water, but sand wouldn’t. Then you could strain out the water and let it evaporate.

Water… Exactly, @Mariah.

Oh, duh! Thank you!

Even more challenging would be separating salt and sugar. I can think of at least two ways to do it.

Take a plastic comb and rub it with to give it a static charge. It will attract salt but not sand.

You can use tweezers and a good magnifier. Salt crystals are cubic. Or do what they said, dissolve the salt in water, it is much easier.