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SEPARATING MIXTURES

SEPARATING MIXTURES. Chapter 3. SEPARATING MIXTURES. Because substances in a mixture are physically combined, the processes used to separate a mixture are based on difference in physical properties Sometimes it’s not easy to separate a mixture. FILTRATION.

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SEPARATING MIXTURES

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  1. SEPARATING MIXTURES Chapter 3

  2. SEPARATING MIXTURES • Because substances in a mixture are physically combined, the processes used to separate a mixture are based on difference in physical properties • Sometimes it’s not easy to separate a mixture

  3. FILTRATION • Heterogeneous mixture composed of solids and liquids can be separated by filtration • Technique that uses a porous barrier to separate a solid from a liquid

  4. DISTILLATION • Most homogeneous mixtures can be separated by distillation • Separation technique that is based on differences in the boiling points of the substances involved • Mixture is heated until the lowest boiling point boils to a vapor that can then be condensed into a liquid and collected

  5. DISTILLATION

  6. CRYSTALLIZATION • Separation technique that results in the formation of pure solid particles • When the solution contains as much dissolved substance as it can hold, any additional dissolved substance will come out of solution

  7. CHROMATOGRAPHY • Technique that separates the components of a mixture on the basis of the size of the particles which affects how well they travel through a porous medium (stationary phase) • Mobile phase: components of the mixture • Stationary phase: substance which is fixed in place • Can identify a substance based on how long it takes a mixture to travel through the stationary phase

  8. CHROMATOGRAPHY

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