Seperation of Mixtures?

Question

How would you seperate the following mixtures into their components?

1. Sand and water

2. Sugar and water

3. Oil and water

4. Sand and gravel

5. A mixture of heptane (boiling point 98c) and heptanol (boiling point 176c)

6. A mixture of iodine solid and sodium chlorine (iodine is not soluble in water.)

7. A mixture of lead and aluminum pellets

8. A mixture of salt and iron filings.

Answer 1

Dude, this is an old, old, OLD exercise.

And if you can't figure it out for yourself, you deserve to fail.  Try thinking of what characteristics are different between each ingredient, then how you would use that to separate them.  For example, some materials dissolve in water and some don't.

Answer 2

distillation or filtration for some...

8 is with a magnet considering iron is magnetic and salt is not, other than that i'm not too sure on a few

Answer 3

1. Sand and water - Deposition method(wait until sand is deposited at  the bottom of the jar and seperate it with filter.

2. Sugar and water -  Heat it, the water alone evoporates. you get sugar.

3. Oil and water  - Osmosis method.

4. Sand and gravel - Using various sizes of filters.

5. A mixture of heptane (boiling point 98c) and heptanol (boiling point 176c) - Heating at 98c for some time until , the heptane is seperated as evoporation.

6. A mixture of iodine solid and sodium chlorine (iodine is not soluble in water.) Osmosis method

7. A mixture of lead and aluminum pellets - Magnetic separation method.

8. A mixture of salt and iron filings. Either magnetic separation or water soluble method.

Answer 4

Ok let me help you with this i failed chemistry last year.

1)Sift the sand from the water in a pasta drainer

2)There's a process where you heat the mixture of sugar and water, and it allows you to seperate the water from the sugar when you take the mixture to a certain temperate, putting the sugar in its solid form and keeping the water in its liquid form i forget what its called

3)wtf?

4)Sift out the sand from the gravel, gravel is larger than sand so sift out the sand.

5)Never seen that before in my life

6)dunno

7)dunno

8)Use a magnet to attract the iron filings out of the mixture

Oh yeah for number 2 the process is called distillation i believe.  Something that ends in "ation" i dunno