Question

When iron, salt, and sand are mixed together, they form a
mixture.

Answer 1

Yes, when iron, salt, and sand are mixed together, they form a heterogeneous mixture. In this mixture, the individual components (iron filings, salt, and sand) retain their distinct physical properties and can be separated from one another. For example, you could use a magnet to remove the iron filings, dissolve the salt in water to separate it from the sand, or use filtration to separate sand from the solution. Heterogeneous mixtures do not have a uniform composition throughout, and their components can usually be identified and isolated through physical means.