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1.4 Extraction, adsorption and chromatography
Extraction, adsorption and chromotography
Paragraph 1.4
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Scheikunde
Middelbare school
havo
Leerjaar 3
This lesson contains
17 slides
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interactive quizzes
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Lesson duration is:
45 min
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Items in this lesson
Extraction, adsorption and chromotography
Paragraph 1.4
Slide 1 - Slide
Extraction
Difference in solubility
Mixture: two solids
Solvent added
Followed by filtration and evaporation
Slide 2 - Slide
Adsorption
Difference in adhesion to solid
Activated carbon used
Removal of colourants, toxins and
flavourins
Followed by filtration
Slide 3 - Slide
Demo - Decolor spiritus
Slide 4 - Slide
Difference between absorbtion en adsorbtion
Absorption: substance is taken up by another substance (sponge)
Adsorption only interaction on the surface (norit)
Slide 5 - Slide
Chromatography
Difference in solubility in the moving liquid and adhesion to paper
Result = chromatogram
Slide 6 - Slide
Chromotography
At the bottom you add samples on paper (stationairy phase) which is put solvent (mobile phase)
Samples will partially be drawn up with the
liquid
Dots on same height are same substances
Slide 7 - Slide
Lab experiment - Paper chromotography
Slide 8 - Slide
What is paper chromotography based on?
A
Difference in boiling points
B
Difference in adhesion to the paper
C
Difference in solubility in the moving liquid
D
B and C
Slide 9 - Quiz
What is not a seperation method?
A
Distillation
B
Chromatography
C
Elektrolysis
D
Filtration
Slide 10 - Quiz
What type of mixture can be extracted?
A
Solution
B
Suspension
C
Emulsion
D
Mixture of solids
Slide 11 - Quiz
What difference in substance properties is adsorption based on?
A
Particle size
B
Adhesion
C
Solubility
D
Boiling point
Slide 12 - Quiz
Making tea:
What separation methods are used?
A
evaporation - filtration
B
evaporation - extraction
C
extraction - evaporation
D
extraction - filtration
Slide 13 - Quiz
Adsorption works ...
A
only with water and gas masks
B
only with water
C
with water, gas masks and fume hoods
D
only with gas masks
Slide 14 - Quiz
How do you seperate a mixture of sand and salt?
A
Decantation, filtration and evaporation
B
Extraction and filtration
C
Extraction, filtration and evaporation
D
Evaporation and filtration
Slide 15 - Quiz
Is sample 3 a pure substance or a mixture?
Slide 16 - Slide
Is sample 3 a pure substance or a mixture?
A
Pure substance
B
Mixture
Slide 17 - Quiz
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