Key term for OCR GCSE Chemistry B, used in Reactivity trend.
Factors in an experiment that are kept exactly the same to ensure that the test is fair and results are valid.
Control variables appears in OCR GCSE Chemistry B revision content for Practical skills, especially Reactivity trend and Apparatus and techniques.
Practical skills
Reactivity trend • Apparatus and techniques
Ideas about Science
Data interpretation and conclusions • Confidence in hypothesis
Ideas about Science
Scientific investigation planning • Scientific vocabulary
Ideas about Science
Scientific investigation planning • Planning experiments
Making useful chemicals
Reaction rate control • Determining rate of reaction
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