Separating Mixtures10-8-14

1. SortingSeparating mixtures with your hands.

Ex: separating pop corn kernels, black beans, & rice

2. Using a Magnet• Using the magnetic property of a

substance to separate a mixture• Made of iron

Ex: Iron Filings & pencil shavings

3. Chromatography-Separating a colored mixture by using a solvent to see what colors make it up.

Ex: Black marker

4. Filtration• Separating by size• Allowing liquids or smaller items to

pass through a filter, leaving a larger substance on the other side.

Ex: sand & water; rocks & dirt

5. Dissolving a SubstanceMixing substances in water to separate the one that dissolves.

Ex: Sand & Sugar

6. Evaporation/Boiling/Simple Distillation Separation by changing a liquid to a gas to leave behind a dissolved substance

Ex: lemonade

7. Fractional DistillationSeparates liquids by using their different boiling points

Ex: water (100ᴼC) and ethanol (78ᴼC)

Sand, Salt, Iron Filings Mixture

Procedures for separation: (be very detailed)1. Take out the iron filings with a magnet.

2. Pour the sand and salt in water so that the salt will dissolve. 3. Use a filter to separate the salt water from the sand.

4. Evaporate the water out of the salt water which will leave the salt behind.

QOD#31How would you best separate a large amount of sand and small sea shells? (RAP)

Tuesday, October 14th

• Grab notebook• Write HW in planner

Separating Mixtures Questions

1. How do you separate iron filings from sand?2. How do you separate a mixture of solids and liquids?3. What is the technique that separates a mixture based on the individual substance’s tendency to travel across a surface?4. How do you separate the substances that make up a solution?5. How do you separate a mixture of trail mix?6. How do you separate a mixture of dirt and rocks?7. How do you separate Easter Egg dyes?8. What method of separation does a person use to find diamonds?9. What method do you use to separate a lemonade mixture?10. How would you separate a mixture of small particles of chalk and sugar?

Separating Mixtures Answers

1. Use a magnet to remove the iron filings.2. Use a filter (filtration)3. Chromatography4. Evaporate out the liquid to the leave the other substance.5. Sorting 6. Sorting or Filtration7. Chromatography8. Filtration9. Evaporate out the water10. First, add water to dissolve the sugar

Next, use a filter to separate the sugar water and the chalkLastly, evaporate the water leaving behind the sugar.