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CAIE A-Level Chemistry Mathematical Requirements

Practise CAIE A-Level Chemistry mathematical skills through data-table graph plotting, best-fit lines and chemical quantities such as ΔG and temperature.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • plot ΔG against temperature from tabulated data and draw a ruled best-fit line

Covered syllabus points

M.1—Arithmetic, rounding, percentages, means and significant figuresM.2—Unit conversions, standard form, logs and algebraM.3—Graphs, proportionality, gradients and interceptsM.4—Curves, models, logarithms and core chemical formulaeM.5—Key quantities, symbols and units

Mathematical requirements question 1

[Maximum number: 1]

The model of the nuclear atom was first proposed by Ernest Rutherford. He developed this model on the basis of results obtained from an experiment using gold metal foil.

Tumbaga is an alloy of copper and gold. A sample of tumbaga was analysed. The mass spectrum of the sample is shown.

Figure for Question Mathematical requirements question 1 — CAIE A-Level Chemistry AS

Calculate the percentage abundance of gold, x, in the sample of tumbaga.

x= % [1] \begin{aligned} & x= \\ & \text { \% [1] } \end{aligned}
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