7779684
Beschreibung
Quiz von Daniel Brand, aktualisiert more than 1 year ago
|
Erstellt von Daniel Brand
vor fast 8 Jahre
|
|
Frage 1
Frage
Which of the following statements are true about chromatography? Select all that apply.
Antworten
-
It separates mixtures into its distinct constituents.
-
It consists of stationary and mobile phases.
-
The solvent used is water-based.
-
Chromatography can only separate molecules based on their size.
Frage 2
Frage
TLC stands for [blank_start]thin[blank_end] [blank_start]layer[blank_end] [blank_start]chromatography[blank_end].
Antworten
-
thin
-
layer
-
chromatography
Frage 3
Frage
For which of the following biological molecules would you use water as the mobile phase? Check all that apply.
Antworten
-
Amino acids
-
Fats
-
Glucose
-
Oils
Frage 4
Antworten
-
Beaker
-
Stationary phase
-
Mobile phase
-
Watch glass
-
Chromatography paper
-
Solvent
-
Spot of mixture
-
Beaker
-
Pencil line
-
Watch glass
-
Stationary phase
-
Beaker
-
Pencil line
-
Solvent
-
Solvent
-
Stationary phase
-
Spot of mixture
-
Chromatography paper
-
Watch glass
-
Solvent
-
Pencil line
-
Beaker
-
Chromatography paper
-
Spot of mixture
-
Spot of mixture
-
Chromatography paper
-
Beaker
-
Watch glass
-
Stationary phase
Frage 5
Frage
The rate at which different molecules move along the stationary phase depends on...
Antworten
-
Size
-
Polarity
-
Solubility
-
Electronic charge
Frage 6
Frage
Which of the following statements best explains how different molecules 'climb' chromatography paper at different rates?
Antworten
-
Polar molecules travel faster because they don't form hydrogen bonds with the paper.
-
Polar molecules travel faster because they form hydrogen bonds with the paper.
-
Non-polar molecules travel faster because they don't form hydrogen bonds with the paper.
-
Non-polar molecules travel faster because they form hydrogen bonds with the paper.
Frage 7
Frage
Once a chromatography run has completed, you can identify the components in the mixture by finding their Rf values.
Rf = x / y
Which statements are true about this formula?
Antworten
-
x is the distance travelled by the solvent
-
x is the distance travelled by the component
-
y is the distance travelled by the solvent
-
y is the distance travelled by the component
Frage 8
Frage
Three ways of visualising the molecular components separated during chromatography include shining [blank_start]a UV light[blank_end] over a [blank_start]TLC plate[blank_end], spraying [blank_start]ninhydrin[blank_end] on [blank_start]amino acid molecules[blank_end], or adding [blank_start]iodine crystals[blank_end].
Antworten
-
a UV light
-
white light
-
different coloured lights
-
infrared light
-
TLC plate
-
gas chromatography column
-
mobile phase
-
ninhydrin
-
amino acid molecules
-
starch
-
sodium hydrogen carbonate
-
amino acid molecules
-
triglyceride molecules
-
reducing sugars
-
non-reducing sugars
-
iodine crystals
-
chlorine gas
-
alkaline solution
-
copper sulphate
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.