OCR GCSE Chemistry B · J258
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Scientific quantitiesScience involves observations, but not every observation is a scientific quantity. “The liquid is heavier” is qualitative. “The liquid has a mass of 5.14 g” is quantitative because it gives both a numerical value and a unit.
- Revise: Scientific vocabulary
A measurable property written as a numerical value with an appropriate unit, such as a time of 30 s.