Experimental methods written questions
Practise G3 Science Chemistry experimental methods and purity evidence through written answers with marking guidance.
Learning goals
- Name apparatus for measuring time, temperature, mass and volume, including burettes, pipettes, measuring cylinders and gas syringes
- Suggest suitable apparatus for simple experiments, including collecting gases and measuring reaction rates
- Describe separation and purification using a suitable solvent, filtration, and crystallisation or evaporation
- Describe separation by distillation and fractional distillation
- Describe separation by paper chromatography
- Suggest how to separate and purify a mixture of solids from information about its substances
- Suggest how to separate and purify a solid–liquid mixture from information about its substances
- Suggest how to separate and purify a mixture of miscible liquids from information about its substances
- Interpret paper chromatograms by comparing them with known samples
- Deduce a substance's identity and purity from melting and boiling point data
- Follow a sequence of practical instructions
- Use practical techniques, apparatus and materials
- Make and record observations, measurements and estimates in experiments
- Interpret and evaluate observations and results from experiments
- Plan an investigation and choose its techniques, apparatus and materials
- Evaluate an experimental method and suggest improvements
Use the feedback to improve your answers; this practice does not count towards your progress.
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Paper instructions
Practise
Practise questions on the skills you are learning. This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- About 10 minutes.
- Feedback appears after you check each answer.
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Beyond the syllabus: optional enrichment that does not count towards your progress.