Back to Course

Cambridge IGCSE chemistry

0% Complete
0/0 Steps
  1. States of matter
    States of matter
    3 Topics
  2. Changing state
    5 Topics
  3. Diffusion
    4 Topics
  4. Experimental techniques
    Taking measurements
    4 Topics
  5. Separation and purification
    4 Topics
  6. Chromatography
    2 Topics
    1. What is chromatography ?
    2. Identifying substances in a chromatogram
Cambridge IGCSE chemistry Chromatography
In Progress
Lesson 6 of 6
In Progress

Chromatography

Learning objectives:

  • Describe how paper chromatography is used to separate mixtures of soluble coloured substances using a suitable solvent
  • Interpret simple chromatograms to identify

(a) unknown substances by comparison with known substances

(b) pure and impure substances

  • Describe how paper chromatogrphy is used to seperate mixtures of soluble colourless substances, using a suitable solvent and a locating agent. Knowledge of a specific locating agent is not needed
  • State and use the equation Rf