Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

12 questions

SA-OC-PR-0011 markL1 FoundationCalculatorPlanning

In an investigation of how temperature affects rate, temperature is the

Salam Academy Original Practice · Proposed mark scheme

SA-OC-PR-0021 markL1 FoundationCalculatorProcessing data

A burette reads

1.20\ \mathrm{cm^3}

at the start and

25.65\ \mathrm{cm^3}

at the end. Calculate the titre.

Salam Academy Original Practice · Proposed mark scheme

SA-OC-PR-0121 markL1 FoundationCalculatorPlanning

The dependent variable is the one you

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SA-OC-PR-0032 marksL2 StandardCalculatorProcessing data

Accurate titres:

22.35

22.40

22.80

22.30\ \mathrm{cm^3}

. Calculate the mean of the concordant titres.

Salam Academy Original Practice · Proposed mark scheme

SA-OC-PR-0041 markL2 StandardCalculatorEvaluating

Results that are close to each other are

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SA-OC-PR-0051 markL2 StandardCalculatorProcessing data

Burette readings should be recorded to

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SA-OC-PR-0061 markL2 StandardCalculatorEvaluating

Gas is collected over water in a rate experiment, but some dissolves. A better method is to

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SA-OC-PR-0071 markL2 StandardCalculatorPlanning

When investigating the effect of acid concentration on rate, which must be kept constant?

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SA-OC-PR-0081 markL2 StandardCalculatorEvaluating

Heat loss to the surroundings in a temperature-change experiment is reduced by

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SA-OC-PR-0091 markL2 StandardCalculatorProcessing data

On a graph, the independent variable is plotted

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SA-OC-PR-0101 markL2 StandardCalculatorProcessing data

During a titration, the solution in the conical flask should be

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SA-OC-PR-0112 marksL3 ExamCalculatorEvaluating

A measuring cylinder has an uncertainty of

\pm0.5\ \mathrm{cm^3}

. Calculate the percentage error in measuring

20.0\ \mathrm{cm^3}

Salam Academy Original Practice · Proposed mark scheme