Question 2
[Maximum number: 3]
Magnesium exists as three isotopes, and .
Question 2(c)
(a)
Magnesium is a metal.
Describe the structure and bonding of metals. Include a labelled diagram in your answer.
[ 3 ]
IGCSE Chemistry Extended 2.7 Metallic bonding Question Bank
2.7 Metallic bonding
Question 4
[Maximum number: 1]
Which statement explains why metals conduct electricity when solid?
A
They have atoms which are free to move.
B
They have electrons which are free to move.
C
They have molecules which are free to move.
D
They have positive ions which are free to move.
Question 5
[Maximum number: 1]
Iron is a metal. The structure of iron is described as a lattice of positive ions in a sea of electrons.
Which of the following statements about iron are correct?
1 iron conducts electricity because the electrons are free to move
2 iron has a high melting point due to the strong covalent bonds
3 iron is an alloy
4 iron is malleable because the layers of atoms can slide over one another
A
1 only
B
1 and 3
C
1 and 4
D
2, 3 and 4
Question 5
[Maximum number: 1]
Which statement about metals is not correct?
A
They conduct electricity because delocalised electrons can move throughout the metal.
B
They consist of layers of atoms that can slide over each other.
C
They have a giant lattice of oppositely charged ions in a 'sea' of delocalised electrons.
D
They have a giant lattice of positive ions in a 'sea' of delocalised electrons.
Question 5
[Maximum number: 1]
The structure of copper is described as a lattice of positive ions in a 'sea of electrons'.
Which statements are correct?
1 Copper has a high melting point because of the strong electrostatic attraction between the positive ions and the 'sea of electrons'.
2 Copper is malleable because the layers of atoms in the lattice can slide over each other.
3 Copper atoms can be oxidised to form copper ions by losing electrons.
A
1, 2 and 3
B
1 and 2 only
C
1 and 3 only
D
2 and 3 only
Question 5
Iron is a metal. The structure of iron is described as a lattice of positive ions in a sea of electrons.
Which of the following statements about iron are correct?
1 iron conducts electricity because the electrons are free to move
2 iron has a high melting point due to the strong covalent bonds
3 iron is an alloy
4 iron is malleable because the layers of atoms can slide over one another
A 1 only
B 1 and 3
C 1 and 4
D 2, 3 and 4
Question 5
[Maximum number: 1]
Which type of structure and bonding is present in an element that is malleable and conducts electricity?
A
covalent molecular
B
ionic lattice
C
covalent macromolecular
D
metallic lattice
Question 5
[Maximum number: 1]
Substance P conducts electricity when solid.
Which particles move in solid P so that it can conduct electricity?
1 anions
2 cations
3 electrons
A
1 and 2
B
1 only
C
2 and 3
D
3 only
Question 6
[Maximum number: 1]
Caesium is a metal in Group I of the Periodic Table.
Which description of the bonding in caesium is correct?
A
electrostatic attraction between oppositely charged ions
B
electrostatic attraction between positive metal ions and mobile electrons
C
neighbouring metal atoms sharing pairs of electrons
D
strong attractive forces between atoms
Question 6
[Maximum number: 1]
The diagram shows metallic bonding.
Which labels are correct?
X
Y
atomic nucleus
outer electron
metal atom
mobile electron
metal ion
mobile electron
positive ion
negative ion