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Topic: separate a mixture of sand, salt, and iron fillings  (Read 6634 times)

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Offline Garster

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separate a mixture of sand, salt, and iron fillings
« on: October 24, 2006, 01:12:32 PM »
Does anyone know how to do this? I really need help, please!

Offline Mitch

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Re: separate a mixture of sand, salt, and iron fillings
« Reply #1 on: October 24, 2006, 01:54:56 PM »
Which dissolves in water?
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Offline Garster

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Re: separate a mixture of sand, salt, and iron fillings
« Reply #2 on: October 24, 2006, 02:17:40 PM »
salt.

Offline Donaldson Tan

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Re: separate a mixture of sand, salt, and iron fillings
« Reply #3 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.
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

Offline Playerbeta

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Re: separate a mixture of sand, salt, and iron fillings
« Reply #4 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?

Offline P-man

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Re: separate a mixture of sand, salt, and iron fillings
« Reply #5 on: November 11, 2006, 07:09:09 PM »
Exactly. It's just a bit of logical thinking, isn't it?
Pierre.

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