AQA Trilogy GCSE Science Science
Mission Objectives
Describe the process of chromatography
Calculate the Rf value
Evaluate the process of chromatography and suggest improvements
Save files related to this lesson
Words and meanings to learn
stationary phase
phase in chromatography that does not move, for instance, the paper in chromatography
Rf value
the ratio between the distance travelled by the dissolved substance (the solute) and the distance travelled by the solvent
mobile phase
phase in chromatography that moves, usually a solvent or mixture of solvents
insoluble
a substance that does not dissolve in a solvent
soluble
a substance that can be dissolved in a solvent to form a solution
Samantha is a dedicated and accomplished science educator with over 15 years of leadership experience in the field, coupled with a strong background in scientific analysis. She has a proven track record of strategically managing educational departments, driving operational efficiencies, and nurturing collaborative relationships with stakeholders.
Samantha previously served as the Head of Chemistry and Sixth Form Tutor, Ilkley Grammar School, Ilkley with extensive Key Stage 4 and 5 teaching experience and leadership. In addition to her teaching and leadership roles, she is also an examiner for AQA, providing her with valuable insight into assessment standards and exam specifications.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket, where she's enthusiastically honing her skills both on and off the pitch!
Class practical on paper chromatography using coloured pens: coloured felt tips, chromatography paper, pencils, rulers, wooden splints, paperclips.
Expert film
Mission assignment film
