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Separating Mixtures

Separating Mixtures. August 31. How do you separate?. How can you separate mixtures?. Separating. Separating is based on the difference in physical properties of the substances… Think about how you would separate a bag of m&ms Some mixtures are easier to separate than others.

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Separating Mixtures

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  1. Separating Mixtures August 31

  2. How do you separate? • How can you separate mixtures?

  3. Separating • Separating is based on the difference in physical properties of the substances… • Think about how you would separate a bag of m&ms • Some mixtures are easier to separate than others

  4. What would you rather separate?

  5. Filtration • Filtration: technique that uses a porous barrier to separate a solid from a liquid • Heterogeneous mixtures (sand & water)

  6. Distillation • Distillation: separation technique that is based on differences in the boiling points of the substances involved • Homogeneous mixtures (most) • 2 liquids • When precisely controlled, distillation can separate substances having boiling points that differ by only a few degrees

  7. Crystallization/Boiling • Crystallization: separation technique that results in the formation of pure solid particles from a solution containing the dissolved substance • You boil out the liquid and are left with the solid crystals • Salt water

  8. Chromatography • Chromatography: technique that separates the components of a mixture (called the mobile phase) on the basis of the tendency of each to travel or be drawn across the surface of another material (called the stationary phase). • Example-Ink • Different masses travel different distances!

  9. Reflection • Could you separate the colors in black pen ink? How could you do this and what separation technique would you use?

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