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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Garster on October 24, 2006, 01:12:32 PM

Title: separate a mixture of sand, salt, and iron fillings
Post by: Garster on October 24, 2006, 01:12:32 PM

Does anyone know how to do this? I really need help, please!

Title: Re: separate a mixture of sand, salt, and iron fillings
Post by: Mitch on October 24, 2006, 01:54:56 PM

Which dissolves in water?

Title: Re: separate a mixture of sand, salt, and iron fillings
Post by: Garster on October 24, 2006, 02:17:40 PM

salt.

Title: Re: separate a mixture of sand, salt, and iron fillings
Post by: Donaldson Tan on October 24, 2006, 03:13:07 PM

Do a forum search. You might be surprised to find that this is the default mixture of choice every teacher would ask his student to seperate.

Title: Re: separate a mixture of sand, salt, and iron fillings
Post by: Playerbeta on November 07, 2006, 11:12:26 PM

You are lucky, I am having a test on these tomorrow. (at the time I posted this)

first, use a magnet to separate the iron fillings.  Technically called "hand separation"
      ps, using a electromagnet may be better as u can cut out the electricity and the iron fillings will fall.
second, sand and salt left, dissolve them in water, then filtrate it. Technically called "filtration"
      sand and salt solution left
third, distil or evaporate the water, so that salt is left over.  Technically called "distillation" and "evaporation".

All three substances are separated, aren't they?

Title: Re: separate a mixture of sand, salt, and iron fillings
Post by: P-man on November 11, 2006, 07:09:09 PM

Exactly. It's just a bit of logical thinking, isn't it?