IBChemistry: SLDPExam Questions4. Chemical Bonding & Structure4.3 Intermolecular Forces & Metallic Bonding

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First teaching 2014

Last exams 2024

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Intermolecular Forces & Metallic Bonding (DP IB Chemistry: SL)

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4.3 Intermolecular Forces & Metallic Bonding

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4.3 Intermolecular Forces & Metallic Bonding

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11 mark

Which of the following dipole labels are not correct?q1_4-3_ib_sl_easy_mcq

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    21 mark

    Magnesium oxide has a very high melting temperature.

    Which of the following is the best description of its structure and bonding?

    • Giant ionic

    • Giant metallic

    • Macromolecular 

    • Simple molecular 

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    31 mark

    Which of the following compounds is polar?

    • CCl4

    • BF3

    • PH3

    • CH3CH3

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    41 mark

    Which of the following statements is not correct?

    • The strongest type of intermolecular force in ammonia is hydrogen bonding

    • The strongest type of intermolecular force in water is hydrogen bonding

    • The strongest type of intermolecular force in hydrogen chloride is permanent dipole 

    • The strongest type of intermolecular forces in ethanol is permanent dipole 

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    51 mark

    Which of the following shows the correct order of boiling points for pentane, butane and propane?

    • CH3CH2CH3 > CH3CH2CH2CH3 > CH3CH2CH2CH2CH3

    • CH3CH2CH2CH2CH3 > CH3CH2CH2CH3 > CH3CH2CH3

    • CH3CH2CH2CH3 > CH3CH2CH2CH2CH3 > CH3CH2CH3 

    • CH3CH2CH3 > CH3CH2CH2CH2CH3 > CH3CH2CH2CH3  

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    61 mark

    Substance L has the following properties.

    Melting Point 

    Electrical conductivity

     

    660 oC

    When solid

    When molten

     

    Yes

    Yes

      What is likely to be the identity of substance L?

    • Graphite

    • Li2O

    • NaCl

    • Al

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    71 mark

    Which of the following statements about ethylamine, CH3CH2NH2, is correct?

    • The strongest type of intermolecular force are London dispersion forces

    • The nitrogen atom does not have a lone pair present

    • The strongest type of intermolecular force is permanent dipole permanent dipole forces

    • The strongest type of intermolecular force is hydrogen bonding

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    81 mark

    Which of the following statements about butane, CH3CH2CH2CH3, and propanone, CH3COCH3 are correct? 

    1. The boiling point of propanone is higher than butane
    2. The boiling point of butane is higher than propanone
    3. The strongest type of intermolecular force in propanone are permanent dipole permanent dipole forces

    • I and II only

    • I and III only

    • II and III only

    • I, II and III

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    91 mark

    What is the correct order of decreasing melting points for group 1 metals?

    • Na > K > Rb > Cs

    • Na > K > Cs > Rb

    • Cs > Rb > K > Na

    • K > Na > Rb > Cs

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    101 mark

    Which of the following statements about alloys are correct? 

    1.   Alloys contain atoms of all the same sizes
    2.   An alloy is a mixture of a metal with another element
    3.   Alloys are harder than the pure metal they originate from

    • I and II only

    • I and III only

    • II and III only

    • I, II and III

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    11 mark

    Which of the following metals would have the highest melting point?

    • Na

    • Mg

    • Al

    • K

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    21 mark

    The correct order of increasing boiling points for the following compounds is

    • 1-chlorobutane < butane < butan-1-ol 

    • Butan-1-ol < 1-chlorobutane < butane, 

    • Butane < 1-chlorobutane < butan-1-ol 

    • Butan-1-ol < butane < 1-chlorobutane 

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    31 mark

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

    Otne2dIl_q3_4-3_ib_sl_medium_mcq

    • London dispersion forces

    • Permanent dipole permanent dipole forces

    • Hydrogen bonding

    • Covalent bonding 

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    41 mark

    Hexane, C6H14 and 2,2-dimethylbutane, CH3C(CH3)2CH2CH3, are two isomers of one another and have the same Mr of 86.0. 

    Hexane has a higher boiling point than 2,2-dimethylbutane. 

    Which of the following statements is not correct?

    • hexane has a higher boiling point because it is a straight chain molecule

    • 2,2-dimethylbutane has a lower boiling point as it is a branched molecule 

    • 2,2-dimethylbutane only contains London dispersion forces 

    • hexane contains permanent dipole permanent dipole forces

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    51 mark

    Which of the following substances has the highest melting point?

    • Mg

    • NaO

    • O2

    • C (graphite)

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    61 mark

    Which of the following statements about propanal and propanone are correct?

    q6_4-3_ib_sl_medium_mcq

    1. The strongest type of intermolecular force in both molecules is hydrogen bonding
    2. The strongest type of intermolecular force in both molecules is permanent dipole permanent dipole forces
    3. Both compounds are soluble in water

    • I and II only

    • I and III only

    • II and III only

    • I, II and III

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    71 mark

    Which molecule has the lowest boiling point?

    • CH3CH2CHO

    • CH3CH2CH2Cl

    • CH3CH2CH3

    • CH3CH2COOH

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    81 mark

    Which of the following species has the highest melting point?

    • 1s2 2s2 2p6 3s1

    • 1s2 2s2 2p6 3s2

    • 1s2 2s2 2p6 3s2 3p1

    • 1s2 2s2 2p6 3s2 3p2

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    91 mark

    Which type of bonding can be described as ‘the electrostatic attraction between positive nuclei and electrons and occurs by the sharing of electrons’? 

    • Hydrogen bonding

    • Ionic bonding 

    • Metallic bonding 

    • Covalent bonding 

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    101 mark

    Which of the following statements about ammonia, NH3, is not correct?

    • The lone pair on nitrogen can form a coordinate bond

    • The bond angle in the NH3 molecule is 107o

    • The strongest type of intermolecular force is hydrogen bonding 

    • There are four bonding pairs of electrons in the NH3 molecule

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    11 mark

    The properties of alloys can be explained in terms of metals having

    1. Non-directional bonding
    2. Delocalised electrons
    3. Ions of different size

    • I and II only

    • I and III only

    • II and III only

    • I, II and III

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    21 mark

    Which of the following molecules will have the highest boiling point?

    • CH3CH2CHO

    • CH3CH2CH2NH2

    • CH3CH2OCH3

    • CH3CH2CH2F

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    31 mark

    What is the correct order of boiling points for the following molecules, from lowest to highest?

    • CH3F < F2 < CH3CH2F < HF

    • F2 < CH3F < CH3CH2F < HF

    • F2 < CH3CH2F < CH3F < HF

    • HF < CH3CH2F <C H3F < F2  

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    41 mark

    In which of the following processes do hydrogen bonds get broken?

    • 2HBr (g) → H2 (g) + Br2 (g)

    • C2H6 (l) → 2C (g) + 6H (g)

    • H2 (l) → H2 (g)

    • NH3 (l) → NH3 (g) 

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    51 mark

    Hydrogen bonding occurs between molecules of propanal, CH3CH2CHO, and molecules of liquid Y. Which of the following is most likely to be liquid Y?

    • CH3CO2CH3

    • CH3OH

    • CH3COCH3

    • CH3CHO

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    61 mark

    Which of the following metals will have the greatest ability to conduct electricity?

    • Li

    • Mg

    • Na

    • Al

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    71 mark

    The following statements are all correct. Which of the statements can be explained, in part, by hydrogen bonding?

    1. Ice is less dense than water
    2. Butanone has a lower boiling point than butan-1-ol
    3. At room temperature butanone can mix with water

    • I and II only

    • I and III only

    • II and III only

    • I, II and III

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    81 mark

    Hydrogen bonding can occur between propanal, CH3CH2CHO and which other molecule?

    • CH3COOH

    • CH3CO2CH3

    • CH3CH2F

    • CH3COCH3

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    91 mark

    Which of the following about dimethylamine, NH(CH3)2 , is correct?

     

    Bond angle

    Strongest type of intermolecular force present

    A

    109.5

    Permanent dipole permanent dipole forces

    B

    109.5

    London dispersion forces

    C

    107o

    Hydrogen bonding

    D

    105o

    Hydrogen bonding

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      101 mark

      Which of the following statements are correct? 

      1. The strongest type of intermolecular force between BF3 molecules are permanent dipole permanent dipole forces
      2. The strongest type of intermolecular force between HCN molecules are permanent dipole permanent dipole forces
      3. The bond angle in HCN is larger than the bond angle in BF3

      • I and II only

      • I and III only

      • II and III only

      • I, II and III

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