Chromatography (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is chromatography used for?
What is chromatography used for?
Separating mixtures into compounds
What can chromatography help identify in a mixture?
What can chromatography help identify in a mixture?
Different chemicals present
What is the analyte in chromatography?
What is the analyte in chromatography?
The mixture of chemicals to separate
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 strongly attracted chemicals move in chromatography?
How do strongly attracted chemicals move in chromatography?
They move slowly
How do weakly attracted chemicals move in chromatography?
How do weakly attracted chemicals move in chromatography?
They move quickly
In paper chromatography, what acts as the stationary phase?
In paper chromatography, what acts as the stationary phase?
Chromatography paper
In paper chromatography, what acts as the mobile phase?
In paper chromatography, what acts as the mobile phase?
A solvent like water or alcohol
What distance do more polar chemicals travel in chromatography?
What distance do more polar chemicals travel in chromatography?
A shorter distance
What property does the Rf value have for a specific chemical?
What property does the Rf value have for a specific chemical?
Always same under same conditions
How can Rf values be used in chromatography?
How can Rf values be used in chromatography?
To identify chemicals in mixtures