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-AC-IM-0011 markL1 FoundationCalculatorTypes of force

London dispersion forces exist between

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SA-AC-IM-0121 markL1 FoundationCalculatorTypes of force

The strongest type of intermolecular force is usually

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SA-AC-IM-0021 markL2 StandardCalculatorTypes of force

Which substance forms hydrogen bonds between its molecules?

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SA-AC-IM-0031 markL2 StandardCalculatorBoiling points

HF has a much higher boiling point than HCl because

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SA-AC-IM-0041 markL2 StandardCalculatorBoiling points

Boiling points of the noble gases increase down the group because

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SA-AC-IM-0051 markL2 StandardCalculatorBoiling points

Which has the highest boiling point?

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SA-AC-IM-0061 markL2 StandardCalculatorTypes of force

In a hydrogen bond, the hydrogen atom is attracted to

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SA-AC-IM-0071 markL2 StandardCalculatorBoiling points

Ice is less dense than liquid water because

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SA-AC-IM-0081 markL2 StandardCalculatorBoiling points

Ethanol is miscible with water but hexane is not because

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SA-AC-IM-0091 markL2 StandardCalculatorTypes of force

Permanent dipole–dipole forces act between molecules that

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SA-AC-IM-0101 markL3 ExamCalculatorBoiling points

\mathrm{NH_3}

(bp −33 °C) boils lower than

\mathrm{H_2O}

(bp 100 °C) mainly because

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SA-AC-IM-0111 markL3 ExamCalculatorBoiling points

Propanone (

\mathrm{CH_3COCH_3}

M_r

58) boils at 56 °C; butane (

M_r

58) at −1 °C. The best explanation is

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