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DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 4. Chemical Bonding & Structure / 4.1 Ionic & Covalent Bonding / Structured Questions: Paper 2


4.1 Ionic & Covalent Bonding

Question 1a

Marks: 1

Describe the nature of ionic bonding.

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    Key Concepts
    Forming Ions

    Question 1b

    Marks: 1

    State the type of bonding in potassium chloride which melts at 1043 K.

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      Question 1c

      Marks: 2

      Describe the structure and bonding in solid magnesium oxide.

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        Key Concepts
        Ionic Lattices

        Question 1d

        Marks: 1

        Outline why solid magnesium chloride does not conduct electricity.

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          Question 2a

          Marks: 2

          Predict whether phosphorus(V) oxide and sodium oxide conduct electricity in their solid and molten states. Complete the boxes with “yes” or “no”.

            Phosphorus(V) oxide Sodium oxide
          Solid state    
          Molten state    
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            Question 2b

            Marks: 2

            State the formula of the compounds formed between the elements below.

            i)    Sodium and sulfur:

            ii)    Magnesium and phosphorus:

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              Question 2c

              Marks: 2

              Describe the covalent bond present in a chlorine molecule and how it is formed.

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                Key Concepts
                Covalent bonds

                Question 2d

                Marks: 1

                Draw the Lewis (electron dot) structure of chloromethane.

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                  Key Concepts
                  Lewis structures

                  Question 3a

                  Marks: 1

                  Using section 8 of the data booklet to state which of the following single covalent bonds is the most polar.

                  C-O C-H O-H

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                    Key Concepts
                    Bond Polarity

                    Question 3b

                    Marks: 1

                    Using section 10 of the data booklet, list the following molecules in order of increasing bond length between the carbon atoms.

                    C2H6 C2H4 C2H2
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                      Question 3c

                      Marks: 1

                      Using section 11 of the data booklet, list the following molecules in order of decreasing bond strength between the carbon atoms.

                      C2H6 C2H4 C2H2
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                        Question 3d

                        Marks: 1

                        CO contains three covalent bonds, one of which is a coordinate bond.

                        Describe how a coordinate bond arises in CO.

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                          Key Concepts
                          Coordinate bonds

                          Question 4a

                          Marks: 2

                          Calcium nitrate contains both covalent and ionic bonds.

                          State the formula of both ions present and the nature of the force between these ions.

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                            Question 4b

                            Marks: 1

                            State the formula of the compound that boron forms with chlorine.

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                              Key Concepts
                              Covalent bonds

                              Question 4c

                              Marks: 1

                              Draw the Lewis structure for boron chloride.

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                                Key Concepts
                                Lewis structures

                                Question 4d

                                Marks: 1

                                Explain why boron trichloride is able to form coordinate (covalent) bonds with other molecules. 

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                                  Key Concepts
                                  Incomplete octets