The mixture you separated was mixture of iron filings, sand, and salt. based on your understanding of matter, is this mixture a homogeneous mixture or heterogeneous mixture? how do you know?

The answer is "Heterogeneous mixture because the filings and particles of sand and salt are distributed randomly in the mixture."

A mixture is a mix of at least two substances in any extent. This is not quite the same as a compound, which comprises of substances in settled extents.

A heterogeneous mixture is formed when the chemicals in the blend are not consistently conveyed all through the blend. For example, on the off chance that you add sand to salt, no measure of crushing can make sand and salt frame a homogeneous blend like salt and water. In this way, we can state that a blend of sand and salt will shape a heterogeneous mixture.

-Heterogeneous mixture because the filings and particles of sand and salt are distributed randomly in the mixture

real, smaller and upside-down.   so the answer should be b.