Chromatography (AQA GCSE Chemistry): 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
How can chromatography help identify chemicals in a mixture?
How can chromatography help identify chemicals in a mixture?
By calculating the Rf value
How many key components are involved in all chromatography techniques?
How many key components are involved in all chromatography techniques?
Three
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 chemicals strongly attracted to the stationary phase move?
How do chemicals strongly attracted to the stationary phase move?
Slowly
How far do chemicals that are more polar move on chromatography paper?
How far do chemicals that are more polar move on chromatography paper?
A shorter distance
What acts as the stationary phase in paper chromatography?
What acts as the stationary phase in paper chromatography?
Chromatography paper
What is used as the mobile phase in paper chromatography?
What is used as the mobile phase in paper chromatography?
A solvent like water or alcohol
What does the Rf value measure?
What does the Rf value measure?
How far a chemical moved vs solvent
What is true about the Rf value for a specific chemical?
What is true about the Rf value for a specific chemical?
Always same under same conditions