Andrews Revision Lesson

Andrews Revision Lesson

By Jack Byrne

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​We will be doing a short recap on the topics we have covered

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Separating Mixtures Revision

• Separation factor - particle size

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• Filtered Liquid - filtrate

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• Substance left behind - residue​

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​Filtration

Multiple Choice

What is the name of the filtered liquid in filtration?

• Distillate

• Solution

• Filtrate

• Mixture

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Multiple Choice

What is the name of the substance that is left behind in the filter paper?

• Filtrate

• Distillate

• Residue

• Solid

• Separation factor - Heats the surface layer of a solution which causes molecules to transition from liquid to gas​

• ​Heat is provided by the bunsen burner

• Evaporation is used to separate a soluble solid in solution​.

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Evaporation

Guess the separation technique​

Poll

Which separation technique was shown in the video?

• Chromatography

• Evaporation

• Distillation

• Filtration

• ​Separation factor - difference of boiling points

• Key piece of equipment needed is ​Liebig Condenser.

• Can be used to separate two miscible liquids. ​

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​Distillation

Multiple Choice

How does distillation separate two liquids?

• Allows particles to sink to the bottom based on their mass

• By heating both liquids and separating based on boiling points

• Based on particle size

• Heats the surface layer of the solution

Multiple Choice

What is the piece of apparatus needed to condense vapor back into liquid called distillate.

• Bunsen Burner

• Thermometer

• Conical Flask

• Liebig Condenser

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• Separates based on the inks ​attraction to the solvent.

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• The 'easier' it dissolves in solution, the further it will travel up the chromatography strip.

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• Water molecules will rise up the chromatography strip by capillary action.

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​Chromatography

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Multiple Choice

What is the separation factor for chromatography?

• Difference of boiling points

• Attraction to the solvent

• Particle Size

• Mass of components

• Settling - allowing undissolved solids to sink to the bottom

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• Flocculation - using chemicals to cause particles to clump together and sink to the bottom​

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​Settling vs Flocculation

Multiple Choice

What is settling?

• Using chemicals to cause particles to clump and sink

• Using a liebig condenser, and other apparatus, to separate two miscible liquids

• Allowing undissolved solids to sink to the bottom of solution based on their mass

• Separating an insoluble solid from a liquid by particles size

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