Chromatography (Edexcel GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is chromatography used for?
What is chromatography used for?
Separating mixtures into compounds
What is the analyte in chromatography?
What is the analyte in chromatography?
The mixture to be separated
What is the stationary phase in chromatography?
What is the stationary phase in chromatography?
A solid material that stays still
What is the mobile phase in chromatography?
What is the mobile phase in chromatography?
A liquid or gas that moves
How do chemicals strongly attracted to the stationary phase move?
How do chemicals strongly attracted to the stationary phase move?
Slowly
How do chemicals weakly attracted to the stationary phase move?
How do chemicals weakly attracted to the stationary phase move?
Quickly
In paper chromatography, what acts as the stationary phase?
In paper chromatography, what acts as the stationary phase?
Chromatography paper
What acts as the mobile phase in paper chromatography?
What acts as the mobile phase in paper chromatography?
A solvent like water or alcohol
How far do more polar chemicals move on chromatography paper?
How far do more polar chemicals move on chromatography paper?
A shorter distance
What is the formula for calculating the Rf value?
What is the formula for calculating the Rf value?
What is true about the Rf value of a specific chemical?
What is true about the Rf value of a specific chemical?
Always same under same conditions