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CAIE A-Level Chemistry AS M 1 Arithmetic Rounding Percentages Means and Significant Figures Questions

Practise arithmetic operations, percentage calculations, means, rounding and significant-figure answers in chemistry contexts.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • calculate percentages and percentage abundances accurately
  • perform arithmetic with appropriate rounding
  • give answers to the required number of significant figures

CAIE A-Level Chemistry AS M 1 Arithmetic Rounding Percentages Means and Significant Figures Questions 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 CAIE A-Level Chemistry AS M 1 Arithmetic Rounding Percentages Means and Significant Figures Questions 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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