IB DP Chemistry
13 mins
13 questions
Multiple Choice Questions
The Ionic Model
Forming Ions / Binary Ionic Compounds / Ionic Lattices
Easy (5 questions)
/5
Medium (5 questions)
/5
Hard (3 questions)
/3
Total Marks
/13
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1
Easy Questions
1 Which of the following statements about ions and ionic compounds are true?
I. Nitrogen can form a 3- ion
II. Potassium can form a cation
III. The formula for aluminium chloride is AlCl2
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
(1 mark)
2 What is the correct formula for ammonium carbonate?
A. NH3CO3
B. NH4CO3
C. (NH4)2CO3
D. (NH4)3CO3
(1 mark)
3 Which crystal structure does not conduct electricity when solid, has a high melting point
and can conduct electricity when molten?
A. Giant metallic
B. Giant ionic
C. Macromolecular
D. Simple molecular
(1 mark)
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2
4 Which of the following compounds is not bonded ionically?
A. CaCO3
B. CH3OH
C. NaOH
D. BaCl2
(1 mark)
5 Magnesium oxide has a very high melting temperature.
Which of the following is the best description of its structure and bonding?
A. Giant ionic
B. Giant metallic
C. Macromolecular
D. Simple molecular
(1 mark)
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3
Medium Questions
1 Which of the following compounds has both covalent and ionic bonds?
A. calcium bromide, CaBr2
B. potassium carbonate, K2CO3
C. propanoic acid, CH3CH2COOH
D. dichloromethane, CH2Cl2
(1 mark)
2 Which is the best description of ionic bonding?
A. electrostatic attraction between cations and electrons
B. electrostatic attraction between nuclei
C. electrostatic attraction between oppositely charged ions
D. electrostatic attraction of nuclei towards shared electrons in the bond between the
nuclei
(1 mark)
3 Potassium bromide is an ionic compound.
When can potassium bromide conduct electricity?
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4
Solid
Molten
Aqueous
A
✓
✓
⨯
B
✓
⨯
✓
C
⨯
✓
✓
D
⨯
⨯
✓
(1 mark)
4 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?
A. 22
B. 24
C. 26
D. 28
(1 mark)
5 Which of the following substances has the highest melting point?
A. Mg
B. NaO
C. O2
D. C (graphite)
(1 mark)
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5
Hard Questions
1 What are the correct formulas for the following ions?
Phosphate
Ammonium
Ethanoate
Nitrite
A
PO43-
NH4+
CH3COO+
NO3-
B
PO32-
NH4-
CH3COO-
NO2-
C
PO43-
NH4+
CH3COO-
NO2-
D
PO42-
NH4+
CH3CH2COO-
NO3-
(1 mark)
2 Of the four compounds listed below which one has the greatest ionic character?
A. HCl
B. MgS
C. CO2
D. CaO
(1 mark)
3 What is the correct formula for aluminium sulfate?
A. Al3(SO4)2
B. Al(SO4)2
C. Al2(SO4)3
D. AlSO4
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6
(1 mark)
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7