IGCSE Chemistry : Experimental techniques (Topical questions and Mark scheme )

Suitable for all IGCSE CAIE students and teachers.

This is the updated version with updated information and questions. Students can revise and master the topic from the useful and incredible resources.

It covers the following learning objectives:

• Name appropriate apparatus for the measurement of time, temperature, mass and volume, including burettes, pipettes and measuring cylinders
• Demonstrate knowledge and understanding of paper chromatography
• Interpret simple chromatograms, including the use of Rf values
• Outline how chromatography techniques can be applied to colourless substances by exposing chromatograms to substances called locating agents.
• Identify substances and assess their purity from melting point and boiling point information
• Understand the importance of purity in substances in everyday life, e.g. foodstuffs and drugs
• Describe and explain methods of purification by the use of a suitable solvent, filtration, crystallisation and distillation (including use of a fractionating column).
• Suggest suitable purification techniques, given information about the substances involved