Decide which of the following separating techniques can be used to the given mixtures. Physical manipulation, filtration, decantation, evaporation, straining and magnet. 1. Salt and water 2. iron filings and sand 3. Rubber bands of different colors 4. Sand and gravel 5. Pebbles and water
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1.evaporation
2.magnet
3.physical manipulation
4.straining
5.straining and/or filtration
Explanation:
1. Water evaporates leaving the dissolved salt behind
2.magnet attracts iron fillings leaving the sand behind
3.you could just pick it one by one and put in order by color
4.you can use strainer to separate the two
5.both strainer and filter can seperate pebbles and water