TLC
Authored by Dr Sophie Tan
Science
1st - 3rd Grade
NGSS covered
Used 13+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
TLC stands for...
Tender Love & Care
Thick Layer Chromatography
Thin Layer Chromatography
Thin Liquid Chromatography
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The distance travelled by the compound depends on how well it adheres to the plate.
TRUE
FALSE
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The distance travelled by the compound depends on how soluble it is in the chosen solvent.
TRUE
FALSE
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How to calculate Rf?
Rf = distance travelled by sample / distance travelled by solvent
Rf = distance travelled by solvent / distance travelled by sample
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When could a co-spot be used?
to make a direct comparison on a TLC plate between the tested compound and the pure substance
to improve the solubility of the tested compound in the solvent
to increase the Rf value
to decrease the Rf value
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
TLC can be used to_____. Tick all that apply
assess the purity of substances
confirm the identity of a compound
separate a mixture of immiscible liquids
purify a substance
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_________________ utilizes a stationary and a mobile phase to separate mixtures based on their affinity for each phase.
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