Teacher and technician pack · GCSE Chemistry
Chromatography: teacher and technician pack
GCSE Chemistry required practical 6
Plan, prepare and teach the chromatography practical: technician sheet, risk assessment, timed lesson plan, expected results, questions and mark schemes.
What is inside
- Technician sheet: apparatus per group, reagents and preparation
- Risk assessment
- Lesson plan in nine timed steps
- Method and the model’s expected ranges
- Exam questions with full mark schemes
- Common mistakes and misconceptions
- Using the virtual practical
- Sign-off box for the department
The practical: Separate four food colourings (A–D) and an unknown mixture (U) by paper chromatography, calculate Rf values and find out which colourings are in U.
The pack a busy department needs before the lesson: an apparatus list per group with what to check, reagents and their preparation, a risk assessment, and a lesson plan in nine timed steps from planning to evaluation. The expected-results section gives the ranges the model predicts for a careful group, labelled as the model’s, not as a promise.
Exam questions come with full mark schemes, followed by the common mistakes and what students say when they make them.