AQA A Level Chemistry

Topic Questions

1.4 Types of Bonding & Properties

11 mark

Phosphane, PH3, can react with a hydrogen ion, H+, to form the phosphonium ion.

Which type of bond is formed in this reaction?

  • Permanent dipole-dipole

  • Hydrogen bond

  • Ionic bond

  • Dative covalent bond

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21 mark

Below are four solids. Which of these contains more than one kind of bonding?

  • Ice

  • Sodium chloride

  • Magnesium

  • Diamond

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31 mark

Which of these atoms is most electronegative?

  • Br

  • Mg

  • Cl

  • Li

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41 mark

Which of the following compounds is not bonded ionically?

  • CH3OH

  • MgCO3

  • LiOH

  • BaCl2

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51 mark

What is the correct formula for ammonium carbonate?

  • NH3CO3

  • NH4CO3

  • (NH4)2CO3

  • (NH4)3CO3

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61 mark

Which statement about the electrical conductivity of sodium sulfide is correct?

  • It conducts when solid and liquid

  • It conducts when solid but not when liquid

  • It conducts when liquid but not when solid

  • It does not conduct when liquid or solid

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71 mark

Which of the following contains a dative covalent bond?

  • N2

  • NH3

  • CN-

  • NH4+

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81 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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91 mark

Graphite has a structure containing layers of carbon atoms in hexagonal rings.

Why is graphite a good conductor of electricity?

  • It has delocalised ions which can move and carry charge.

  • It has delocalised electrons which are mobile.

  • There are only weak London forces between the layers.

  • Each carbon atom in the layers has only three covalent bonds.

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101 mark

Which crystal structure does not conduct electricity when solid, has a high melting point and can conduct electricity when molten?

  • Giant metallic

  • Giant ionic

  • Macromolecular

  • Simple molecular

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11 mark

In which series of compounds does covalent character increase when going from left to right?

  • KI, KBr, KCl

  • NaI, KI, RbI

  • NaCl, MgCl2, AlCl3

  • SO2, P4O10, SiO2

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21 mark

Which is the shortest bond length in the following gases?

  • Oxygen-oxygen in oxygen gas, O2

  • Nitrogen-nitrogen in nitrogen gas, N2

  • Carbon-carbon in ethyne gas, C2H2

  • Oxygen-oxygen in ozone gas, O3

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31 mark

Sodium and magnesium are both period 3 elements.

Compared to sodium, why is magnesium more reactive?

 

Magnesium has a smaller atomic radius

Magnesium has a larger nuclear charge

Stronger nuclear attraction for electrons

A

B

C

D

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41 mark

Which compounds have an ionic lattice structure in the solid state?

 

Silicon dioxide

Ammonium sulfate

Potassium iodide

A

B

C

D

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51 mark

Element D forms a phosphate with formula DPO4.

Which of these could represent the electronic configuration of an atom of D?

  • [Ne]3s1

  • [Ne]3s2

  • [Ne]3s23p1

  • [Ne]3s13p2

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61 mark

Which of the following molecules does not contain a double bond?

  • CO2

  • C2Cl4

  • C2H2Cl2

  • C3F8

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71 mark

Which of the following reactions involves the donation of an electron pair?

  • ½Br2 + I- → Br-I2

  • 2Na+ + O2- → Na2O

  • C + O2 → CO2

  • BF3 + F- → BF4-

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81 mark

The nitrate (V) ion, NO3-, is a polyatomic ion, bonded by covalent bonds. 

Which of the following shows the correct displayed formula for the nitrate ion?

22

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91 mark

Which of the following does not contain a triple bond?

  • SO42-

  • CO

  • N2

  • CN-

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101 mark

What properties best describe the structure and bonding present in hydrogen fluoride?

 

Localised covalent bonds

High solubility in polar solvents

H-F bond has the lowest bond enthalpy out of Group 7 hydrides

Highest boiling point out of Group 7 hydrides

A

B

C

D

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11 mark

N2 is a covalently bonded molecule that makes up 78% of gas in the air we breathe.

Which of the following is not present in an N2 molecule?

  • two lone pairs of electrons

  • three shared pairs of electrons

  • symmetrical electron density around each nitrogen atom

  • three π bonds

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21 mark

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

  • calcium chloride, CaCl2

  • lithium carbonate, Li2CO3

  • butanoic acid, CH3CH2CH2COOH

  • dibromomethane, CH2Br2

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31 mark

Which of the following statements about graphite are correct?

 

The carbon atoms are joined together by three covalent bonds

Graphite contains delocalised electrons

The C-C-C bond angle is 109.5degree

A

B

C

D

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41 mark

Of the four structures listed below which one has the highest melting point?

  • Mg

  • NaO

  • O2

  • C (graphite)

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51 mark

Which statement below shows the correct information about diamond and graphite?

  • diamond and graphite both conduct electricity due to delocalised electrons in their structure

  • the bond angles in the two structures are not the same

  • diamond is macromolecular and graphite is simple molecular

  • all the valence electrons are covalently bonded in both graphite and diamond

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61 mark

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

  • Na

  • Mg

  • K

  • Al

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71 mark

A table of four substances and their physical properties is shown.

Substance

electrical conductivity of aqueous solution

electrical conductivity of molten substance

electrical conductivity of solid

melting point

/ °C

boiling point

/ °C

Diamond

NaCl

Mg

I2

insoluble

insoluble

n/a 

poor

poor

good

good

poor

poor

good 

good

poor

3550

801

150

114

4830

1465

310

183

Which substances have the correct properties?  

  • Diamond and I2

  • NaCl

  • I2 and Mg

  • Mg

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81 mark

The melting points of elements in period 3 are shown below.

26

Why does sulfur have a higher melting point than phosphorus?

  • Sulfur has a giant macromolecular structure

  • Sulfur has more electrons so greater permanent dipole-dipole interactions

  • Sulfur has more electrons so greater van der Waals forces

  • Sulfur has a greater nuclear charge

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91 mark

Sodium chloride is an ionic compound.

When can sodium chloride conduct electricity? 

 

Solid 

Molten

Aqueous

A

B

C

D

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101 mark

Element X forms a carbonate with the formula X2CO3.

Which of these could represent the shorthand electron configuration of an atom of X?

  • [Ne] 3s1

  • [Ne] 3s2

  • [Ne] 3s1 3p2

  • [Ne]

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