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DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 3. Periodicity / 3.2 Oxides, Group 1 & Group 17 / Multiple Choice: Paper 1


3.2 Oxides, Group 1 & Group 17

Question 1

Marks: 1

What happens to the pH of water when magnesium oxide is dissolved into it?

  • The pH increases, because MgO is acidic

  • The pH decreases, because MgO is basic

  • The pH increases, because MgO is basic

  • Nothing happens because MgO is neutral

Choose your answer
  

Question 2

Marks: 1

The Group II metals have higher melting points than the Group I metals.

Which factors result in Group II metals having higher melting points?

1
Group II metals have higher first ionisation energy than the corresponding group I metal
2
there are smaller interatomic distances in the metallic lattices of the Group II metals
3
more electrons are available from each Group II metal atom for metallic bonding in the lattice

  • 1 only 

  • 1 and 2 only

  • 2 and 3 only

  • 1, 2 and 3

Choose your answer
  

Question 3

Marks: 1

What happens when iodine is bubbled through aqueous potassium bromide?

  • Iodine is oxidised to iodide ions

  • Potassium bromide is reduced to bromine

  • Bromide ions are oxidised to bromine

  • No reaction occurs

Choose your answer
  

Question 4

Marks: 1

The halogens exist as diatomic molecules, X2.

Descending down Group 17 from chlorine to iodine the boiling points of the elements increase.

Which statement explains this trend?

  • The permanent dipole in the X2 molecule increases as the group is descended

  • The X–X bond strength increases as the group is descended

  • The electronegativity of X decreases as the group is descended 

  • The number of electrons in each X2 molecule increases as the group is descended 

Choose your answer
  

Question 5

Marks: 1

How do the strengths of the forces between molecules, and the bonds within molecules, vary going down Group 17 from chlorine to bromine to iodine? 

  strength of London dispersion forces strength of covalent bonds
A increase increase
B decrease increase
C increase decrease
D decrease decrease
    Choose your answer
      

    Question 6

    Marks: 1

    Most non-metallic oxides can be described as

    • Ionic and alkaline

    • Covalent and alkaline

    • Covalent and acidic

    • Ionic and acidic

    Choose your answer
      

    Question 7

    Marks: 1

    Which of the options below correctly contains a basic, acidic and amphoteric oxide?

    • K2O, SrO, Al2O3

    • BeO, Al2O3, Br2O

    • Al2O3, SiO2, P4O10

    • P4O10, SO3, F2O

    Choose your answer
      

    Question 8

    Marks: 1

    Which pair of elements reacts most readily?

    • Li + Br2

    • Li + Cl2

    • K + Br2

    • K + Cl2

    Choose your answer
      

    Question 9

    Marks: 1

    Chlorine is a greenish-yellow gas, bromine is a dark red liquid, and iodine is a dark grey solid.

    Which property most directly causes these differences in volatility?

    • The halogen–halogen bond energy

    • The number of neutrons in the nucleus of the halogen atom

    • The number of outer electrons in the halogen atom

    • The number of electrons in the halogen molecule

    Choose your answer
      

    Question 10

    Marks: 1

    Which property increases down group 1 from lithium to caesium?

    • Chemical reactivity

    • First ionisation energy

    • Melting point

    • Electronegativity

    Choose your answer