OCR GCSE Combined Science A · J250
Specification C5.1b, C5 · Biology Paper 1, Biology Paper 2, Chemistry Paper 1, Chemistry Paper 2, Physics Paper 1, Physics Paper 2
Revise: Interpreting Rate of Reaction GraphsThe triangle spans a wider time interval only to make its gradient easier to measure; it does not turn the answer into a mean rate over that interval. A tangent at the start gives the initial rate.
- Revise: Measuring Rates of Reaction
The change in the amount of reactant used or product formed divided by the time interval over which that change occurs.