AQA GCSE Biology · 8461
Specification 4.2.2.1 · Paper 1
- Revise: Required Practicals: Food Tests and Amylase Activity
Removing and testing small samples repeatedly while a reaction is taking place.
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GCSE Biology · key term
Taking small samples repeatedly during a reaction to follow its progress over time.
Used by AQA, Edexcel and OCR
Specification 4.2.2.1 · Paper 1
Removing and testing small samples repeatedly while a reaction is taking place.
Specification 1.10 · Paper 1, Paper 2
Taking small samples from a reaction at regular intervals to follow its progress.
Revise: pH and Enzyme Activity InvestigationTesting successive samples in this way is called continuous sampling.
Specification PAG 2 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Taking and testing fresh samples repeatedly during an investigation to follow a change over time.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: TechniquesIodine detects the starch left in a mixture, so repeated iodine tests can show its disappearance. This is continuous sampling: take a small sample at regular intervals instead of making only one test at the end.
Taking small samples from a reaction mixture at regular, accurately timed intervals and testing them.
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