Question

is sodium chloride and iron filings is hetero or homogeneous mixture
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Answer 1

Explanation:

If the salt is pure, it's homogeneous. If the iron filings are not rusty, they are homogeneous.

Mixtures are separable into their component elements or compounds (at least theoretically) by purely physical processes. For example, if iron filings and sulfur powder are mixed together, they constitute a chemical mixture.