Topic: separate a mixture of sand, salt, and iron fillings (Read 6855 times)

Garster · « **on:** October 24, 2006, 01:12:32 PM »

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

Mitch · « **Reply #1 on:** October 24, 2006, 01:54:56 PM »

Which dissolves in water?

Garster · « **Reply #2 on:** October 24, 2006, 02:17:40 PM »

salt.

Donaldson Tan · « **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.

Playerbeta · « **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?

P-man · « **Reply #5 on:** November 11, 2006, 07:09:09 PM »

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

Topic: separate a mixture of sand, salt, and iron fillings (Read 6855 times)

Garster

separate a mixture of sand, salt, and iron fillings

Mitch

Re: separate a mixture of sand, salt, and iron fillings

Garster

Re: separate a mixture of sand, salt, and iron fillings

Donaldson Tan

Re: separate a mixture of sand, salt, and iron fillings

Playerbeta

Re: separate a mixture of sand, salt, and iron fillings

P-man

Re: separate a mixture of sand, salt, and iron fillings

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