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GCSE Combined Science · key term
A straight line that touches a curve at a chosen point and has the same direction as the curve at that point.
Used by AQA and Edexcel
Specification 5.6.1.1, 6.5.4.1.4 · Paper 4, Paper 6
Revise: Reaction Rate CalculationTo investigate the rate at one particular time, use a tangent: a straight line with the same direction as the curve at the chosen point.
A straight line that touches a curve at a chosen point and has the same slope as the curve there.
Specification Rates of reaction · Paper 3, Paper 4
A straight line that touches a curve at a chosen point and has the same gradient as the curve at that point.
Revise: Rates of reactionTo estimate the rate at one particular time, draw a tangent that follows the curve's direction at that point.
For a tangent gradient, choose two well-separated points on the tangent, not two points on the curve.
For a tangent calculation, choose two widely separated points on the tangent, not two points on the curve.
For a tangent gradient, use two well-separated points on the tangent, not two points on the curve.
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