How can mixtures of solids be separated?

1 Answer
Jul 15, 2014

Answer:

Here are some ways to separate mixtures of solids

Explanation:

By appearance

Use tweezers to separate one type of solid from another.

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By size

Use a sieve with holes of the appropriate size. The smaller particles will pass through, and the larger particles remain in the sieve.

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By winnowing

Wind throws lighter particles further than heavier particles.

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By magnetism

You can use a magnet to separate iron filings from a mixture with sand.

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By sublimation

Heating a mixture of iodine and sand will cause the iodine to sublime.

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By solubility

Salt dissolves in water. Sand does not. You can filter the sand from the mixture and recover the salt by evaporating the water from the filtrate.

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By electrorefining

You can separate copper metal from impurities by plating it onto a pure copper electrode.

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Here's a summary of the separation procedures

Solid Mixture

And here's a video on the separation of solids.