Chromatography (AQA GCSE Chemistry Combined Science): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
What is chromatography?
What is chromatography?
Method to separate and identify compounds in mixtures
Purpose of Rf value
Purpose of Rf value
Identify chemicals in a mixture
Three key components of chromatography
Three key components of chromatography
Analyte, stationary phase, mobile phase
The analyte
The analyte
Mixture of chemicals to be separated
The stationary phase
The stationary phase
Solid material that stays still during experiment
The mobile phase
The mobile phase
Liquid or gas that moves through stationary phase
Speed of strongly attracted chemicals in chromatography
Speed of strongly attracted chemicals in chromatography
Move slowly
Speed of weakly attracted chemicals in chromatography
Speed of weakly attracted chemicals in chromatography
Move quickly
Stationary phase in paper chromatography
Stationary phase in paper chromatography
Chromatography paper
Mobile phase in paper chromatography
Mobile phase in paper chromatography
Solvent (e.g. water or alcohol)
Rf value formula
Rf value formula
Rf value under same conditions
Rf value under same conditions
Always the same
