3E - week 36
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Slide 1 - Vidéo
Which hazard symbols (GHS-symbols) did you see during the video?
A
explosive
B
toxic
C
flammable
D
harmful
Slide 2 - Quiz
Drag all text blocks to the right graph.
Pure substance
Mixture
Melting Point
Boiling Point
Boiling Range
Melting Range
Slide 3 - Question de remorquage
How many liters of water should you add to 125 mL hydrochloric acid with a pH of 3,0 in order to obtain a solution with pH 4,0. (answer in 2 decimals)
Slide 4 - Question ouverte
What can consist of one kind of molecule?
A
emulsion
B
solvent
C
solution
D
suspension
Slide 5 - Quiz
There are 6 phase transitions. Put the correct description next to each of 6 phase transitions
g → l
s → l
s → g
l → s
l → g
g → s
solidification / freezing
melting
evaporation
condensation
deposition
sublimation
Slide 6 - Question de remorquage
Filtration is suitable for...
timer
0:15
A
homogeneous mixtures
B
heterogeneous mixtures
Slide 7 - Quiz
Draw a cross section of the filtration when separation a suspension of sand and water.
Slide 8 - Question ouverte
Slide 9 - Diapositive
Drag the name of the mixtures to the most suitable separation method.
filtration
extraction
evaporation
coffee grounds in coffee
stain in trousers
drying wet hair
Slide 10 - Question de remorquage
Drag the name of the mixtures to the most suitable separation method.
filtration
extraction
evaporation
adsorption
blue colour in spirit
coffee grounds in coffee
stain in trousers
drying wet hair
Slide 11 - Question de remorquage
Type the question you made in preparation for the test in the test week?
