A LevelChemistryCIEExam Questions3. Chemical Bonding3.6 Intermolecular Forces, Electronegativity & Bond Properties

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First exams 2025

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Intermolecular Forces, Electronegativity & Bond Properties (CIE A Level Chemistry)

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3.6 Intermolecular Forces, Electronegativity & Bond Properties

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3.6 Intermolecular Forces, Electronegativity & Bond Properties

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11 mark

Silver and iodine are both shiny crystalline solids. 

Which forces exist between neighboring iodine molecules in solid iodine and particles in solid silver?

 

Iodine

Silver

A

Metallic bonds

Covalent bonds

B

Ionic bonds

Metallic

C

Covalent bonds

Covalent bonds

D

Van der Waals’ forces

Metallic

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    21 mark

    Below are four solids. Which of these contains more than one kind of bonding?

    • Diamond

    • Sodium chloride

    • Iron

    • Ice

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    31 mark

    Which quantity gives the best indication of the relative strengths of the hydrogen bonds between water molecules in the liquid state?

    • Enthalpy changes of vaporisation

    • Bond dissociation energies

    • Enthalpy of formation

    • Activation energy

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    11 mark

    Which of the following changes of state shows only dispersion van der Waals’ forces being overcome?

    • C3H6 (l) rightwards arrow C3H6 (s)

    • CO2 (l) rightwards arrow CO2 (g)

    • H2O (s) rightwards arrow H2O (l)

    • C2H5OH (l) rightwards arrow C2H5OH (g)

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    21 mark

    Which of the following molecules has the biggest overall dipole?

    • 1-3-m-9a

    • 1-3-m-9b

    • 1-3-m-9c

    • 1-3-m-9d

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    31 mark

    What is the strongest type of intermolecular force exhibited in the amino acid molecule serine?

    Serine

    Serine

    • London dispersion forces 

    • Permanent dipole-dipole forces

    • Hydrogen bonding

    • Covalent bonding

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    11 mark

    1.00g of propanone is reacted with 5.00g of ethane-1,2-diol and the strong acid benzene sulphonic acid, C6H5SO3H. The mixture is heated under reflux in an inert solvent.

    1-3-h-1

    Which of the following statements is not correct?

    • Propanone has a higher melting point than ethane-1,2-diol

    • Both products are polar molecules

    • Ethane-1,2-diol is soluble in water

    • Water has a higher melting point than liquid Y

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    21 mark

    Hydrogen bonding occurs between molecules of liquid methanal, HCHO, and molecules of liquid Y. Which of the following is most likely to be liquid Y?

    • CH3CO2CH3

    • CH3OH

    • CH3COCH3

    • CH3CHO

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    31 mark

    CHCl3 and Br2 are both liquids at room temperature due to the existence of dipoles.

    What dipoles are involved within CHCl3 and Br2? 

     

    CHCl3

    Br2

    A

    Induced dipoles only

    Induced dipoles only

    B

    Induced dipoles only

    Induced dipoles and permanent dipoles

    C

    Induced dipoles and permanent dipoles

    Induced dipoles and permanent dipoles

    D

    Induced dipoles and permanent dipoles

    Induced dipoles only

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