Question 1

The similarity between metallic elements and ionic compounds is that both

  A  

are held together by forces of attraction between positive and negative ions

  B  

are held together by electrostatic forces

  C  

consist of lattices containing only positive ions

  D  

consist of giant structures of atoms

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Question 2

A molecule is

  A  

a group of atoms bonded by ionic bonds

  B  

a group of atoms bonded by covalent bonds

  C  

a group of ions bonded by covalent bonds

  D  

a group of atoms bonded by metallic bonds

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Question 3

Which of these has a dative covalent bond?

  A  

NH3

  B  

OH-

  C  

H2O

  D  

 H3O+

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Question 4

Which statement about a lattice of sodium chloride is correct?

  A  

the ions are the same size

  B  

the attraction between two sodium ions is greater than the repulsion between two chloride ions

  C  

each sodium ion is surrounded by six chloride ions

  D  

there are more sodium ions than chloride ions

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Question 5

Which molecule is not able to form a co-ordinate bond with another species?

  A  

BH3

  B  

CH4

  C  

NH3

  D  

H2O

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Question 6

In which substance do covalent bonds break when it melts?

  A  

hexane

  B  

ice

  C  

iodine

  D  

silicon dioxide

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Question 7

Which substance contains delocalised electrons?

  A  

cyclohexane

  B  

graphite

  C  

iodine

  D  

sodium chloride

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Question 8

Which compound contains a co-ordinate bond?

  A  

HF

  B  

NH3

  C  

CHCl3

  D  

NH4Cl

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Question 9

Which is not responsible for conduction of electricity?

  A  

the sodium ions in molten sodium chloride

  B  

the electrons between layers of carbon atoms in graphite

  C  

the bonding electrons in a metal

  D  

the lone pair electrons on water molecules

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