Final answer:
To separate a mixture of sand, salt, and iron filings, use a magnet, water, and filtration method.
Explanation:
One method to separate a mixture of sand, salt, and iron filings is by using a combination of techniques:
- First, you can use a magnet to separate the iron filings from the rest of the mixture since iron is magnetic.
- Next, you can add water to dissolve the salt since salt is soluble in water, leaving sand at the bottom.
- Lastly, you can use filtration to separate the sand from the remaining water-salt solution, allowing the sand to be collected.
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