1.4 Extraction, adsorption and chromatography

Extraction, adsorption and chromotography

Paragraph 1.4
1 / 17
volgende
Slide 1: Tekstslide
ScheikundeMiddelbare schoolhavoLeerjaar 3

In deze les zitten 17 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 45 min

Onderdelen in deze les

Extraction, adsorption and chromotography

Paragraph 1.4

Slide 1 - Tekstslide

Extraction
Difference in solubility
Mixture: two solids

Solvent added
Followed by filtration and evaporation

Slide 2 - Tekstslide

Adsorption
Difference in adhesion to solid
Activated carbon used

Removal of colourants, toxins and 
flavourins

Followed by filtration



Slide 3 - Tekstslide

Demo - Decolor spiritus

Slide 4 - Tekstslide

Difference between absorbtion en adsorbtion

Absorption: substance is taken up by another substance (sponge)
Adsorption only interaction on the surface (norit)

Slide 5 - Tekstslide

Chromatography
Difference in solubility in the moving liquid and adhesion to paper
Result = chromatogram


Slide 6 - Tekstslide

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 - Tekstslide

Lab experiment - Paper chromotography

Slide 8 - Tekstslide

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 - Quizvraag

What is not a seperation method?
A
Distillation
B
Chromatography
C
Elektrolysis
D
Filtration

Slide 10 - Quizvraag

What type of mixture can be extracted?
A
Solution
B
Suspension
C
Emulsion
D
Mixture of solids

Slide 11 - Quizvraag

What difference in substance properties is adsorption based on?
A
Particle size
B
Adhesion
C
Solubility
D
Boiling point

Slide 12 - Quizvraag

Making tea:
What separation methods are used?
A
evaporation - filtration
B
evaporation - extraction
C
extraction - evaporation
D
extraction - filtration

Slide 13 - Quizvraag

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 - Quizvraag

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 - Quizvraag

Is sample 3 a pure substance or a mixture?

Slide 16 - Tekstslide

Is sample 3 a pure substance or a mixture?
A
Pure substance
B
Mixture

Slide 17 - Quizvraag