Practise

Question bank

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

TopicSkillDifficulty

12 questions

SA-OC-ST-0011 markL1 FoundationCalculatorParticle model

In which state are particles close together but able to move past one another?

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SA-OC-ST-0021 markL1 FoundationCalculatorChanges of state

The change from gas to liquid is called

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SA-OC-ST-0031 markL1 FoundationCalculatorParticle model

Gases can be compressed easily because

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SA-OC-ST-0051 markL1 FoundationCalculatorChanges of state

Ethanol melts at

-114\,^\circ\mathrm{C}

and boils at

78\,^\circ\mathrm{C}

. Its state at

-120\,^\circ\mathrm{C}

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SA-OC-ST-0121 markL1 FoundationCalculatorParticle model

Which statement about gases is correct?

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SA-OC-ST-0041 markL2 StandardCalculatorChanges of state

During melting, the temperature of a pure solid stays constant because the energy supplied is used to

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SA-OC-ST-0061 markL2 StandardCalculatorGas behaviour

A gas is heated at constant pressure. Its volume

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SA-OC-ST-0071 markL2 StandardCalculatorGas behaviour

The pressure on a gas is increased at constant temperature. Its volume

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SA-OC-ST-0081 markL2 StandardCalculatorChanges of state

On a heating curve, a substance stays at

-39\,^\circ\mathrm{C}

while melting and at

357\,^\circ\mathrm{C}

while boiling. Over what temperature range, in

^\circ

C, is it a liquid? Give the size of the range.

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SA-OC-ST-0091 markL2 StandardCalculatorChanges of state

Evaporation differs from boiling because evaporation

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SA-OC-ST-0101 markL2 StandardCalculatorParticle model

When a solid is heated, its particles

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SA-OC-ST-0111 markL3 ExamCalculatorChanges of state

A cooling curve for a liquid shows a flat section at

54\,^\circ\mathrm{C}

. During this section

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