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DP IB Chemistry: HL

Topic Questions

Home / IB / Chemistry: HL / DP / Topic Questions / 4. Chemical Bonding & Structure / 4.1 Ionic & Covalent Bonding / Multiple Choice: Paper 1


4.1 Ionic & Covalent Bonding

Question 1

Marks: 1

Which of the following statements about 2-methylpropan-2-ol, CH3C(CH3)(OH)CH3, are correct ? 

  1. The structure contains 16 bonding pair of electrons
  2. The O-C-C bond angle is 109.5 o
  3. The total number of electrons is 32
  • I and II only 

  • I and III only 

  • II and III only 

  • I, II and III

Choose your answer
  

Question 2

Marks: 1

Which of the following molecules has the biggest overall dipole?

q2_4-1_medium_mcq_ib-chemistry-hl

    Choose your answer
      

    Question 3

    Marks: 1

     The electronegativity of four elements are given below 

    N = 3.0       H = 2.1       F = 4.0      P = 2.1      

     What is the correct order of polarity for the following compounds

    • PH3 < PF3 < NF3 < NH3

    • PH3 < PF3 < NH3 < NF3   

    • NF3 < NH3 < PH3 < PF3 

    • PH3 < NH3 < NF3 < PF3 

    Choose your answer
      

    Question 4

    Marks: 1

    Which of the following compounds has both covalent and ionic bonds?

    • calcium bromide, CaBr2

    • potassium carbonate, K2CO3

    • propanoic acid, CH3CH2COOH

    • dichloromethane, CH2Cl2

    Choose your answer
      

    Question 5

    Marks: 1

    Which is the best description of ionic bonding?

    • electrostatic attraction between cations and electrons

    • electrostatic attraction between nuclei

    • electrostatic attraction between oppositely charged ions

    • electrostatic attraction of nuclei towards shared electrons in the bond between the nuclei

    Choose your answer
      

    Question 6

    Marks: 1

    Below are four molecules. Which is the most polar molecule present?

    • CH3NH2

    • CH4

    • CCl4

    • CO2

    Choose your answer
      

    Question 7

    Marks: 1

     Potassium bromide is an ionic compound. 

    When can potassium bromide conduct electricity?

     

    Solid

    Molten

    Aqueous

    A

    B

    C

    D

    Choose your answer
      

    Question 8

    Marks: 1

    A periodic table is needed to answer this question.

    Of the four compounds listed below which one has the greatest ionic character?

    • HCl

    • MgS

    • CO2

    • CaO

    Choose your answer
      

    Question 9

    Marks: 1

    What is the correct formula for aluminium sulfate?

    • Al3(SO4)2

    • Al(SO4)2

    • Al2(SO4)3

    • AlSO4

    Choose your answer
      

    Question 10

    Marks: 1

    Aluminium iodide, Al2I6 is a dimer and exists as a solid at room temperature. When it is a vapour it can exist as an AlI3 molecule. 

    How many valence electrons are in an aluminium iodide, AlI3, molecule?

    • 22

    • 24

    • 26

    • 28

    Choose your answer