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Question: if you mixed salt, sand and water in a beaker and then you evaporated the water how would you seperate the salt and sand without them going missing?
evaporate, mix, salt, sand, separate, water
Asked by nrtyx to Alex, Amy, Andy, Georgia, Ollie on 14 Jun 2011.
answered on 14 Jun 2011:
Hello nrtyx. I wouldn’t evaporate the water first.
Salt is soluble, sand isn’t, so filter the mixture, THEN evaporate. The sand will be left in the filter, and the salt in the bowl once the water’s evaporated.
nrtyx commented on 17 Jun 2011:
in that case how would you get all 3 ingredients back (with the same mass/weight)
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Andy commented on 17 Jun 2011:
You’d need something to condense the water after it’s evaporated if you want to recover that.