Question

Describe a plan to separate a sand, salt, and iron filings mixture. Explain each step, the properties of the substances used in the separation, and the type of changes involved in the process

Answer 1

You can use a filtration method. A simple method taught in elementsry schools is using a coffee filter in a cylindrical open cone

Answer 2

The idea is that larger particles cannot pass thru the pores, thus remain on the filter, while smaller molecules, like water, can pass thru.