Chemistry A-Level
Tangent method
What Tangent method means in Chemistry A-Level, as defined for OCR.
Definition of Tangent method
Check what you remember
Read the wording for your board, then hide it and explain Tangent method in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Draw a tangent to the curve at the chosen time, then pick two points far apart on the tangent and calculate the gradient.
Topics that use Tangent method
- How fast? (OCR A-Level)
Related terms
- Calculating rate and concentration from the rate equation
- Colorimetry
- Concentration–time graphs
- Constant half-life
- continuous monitoring
- Controlled comparison of experiments
- Deducing order from initial-rate data
- Deducing order with respect to a reactant
Using Tangent method in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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