[Maximum number: 1]
Copper is used in electrical equipment. It has a melting point of .
(a)
(i)
Draw a labelled diagram to show the bonding present in copper.
[ 1 ]
[Maximum number: 1]
The model of the nuclear atom was first proposed by Ernest Rutherford. He developed this model on the basis of results obtained from an experiment using gold metal foil.
(a)
State the type of bonding in gold.
[ 1 ]
[Maximum number: 2]
An experiment was carried out to determine the percentage of iron in a sample of iron wire.
(a)
Some electronegativity values are shown.
[ 2 ]
(i)
Use the data to suggest the nature of the bonding in iron(III) chloride. Explain your answer.
[ 2 ]
(a)
One of the factors that determines the type of bonding present between the particles of a substance is the relative electronegativities of the bonded particles.
[ 2 ]
(i)
Name and describe the type of bonding you would expect to find between particles with equal electronegativities.
[ 2 ]
[Maximum number: 1]
Copper has a high melting point.
What is the reason for the high melting point of copper?
A
strong attractive forces between copper atoms only
B
strong attractive forces between copper ions and delocalised electrons
C
strong attractive forces between copper ions only
D
strong attractive forces between copper atoms and delocalised electrons
[Maximum number: 1]
Which statement explains why sodium and potassium have different melting points?
A
The attraction between cations and delocalised electrons is stronger in sodium.
B
The attraction between cations and anions is stronger in sodium.
C
The attraction between atoms is stronger in sodium.
D
The attraction between nuclei and shared electron pairs is stronger in sodium. and HCN react together to form , an ionic compound. Which row states the number of coordinate bonds and the number of bonds in one formula unit of ?
number of
coordinate bonds
number of
bonds
0
2
1
2
0
3
1
3
[Maximum number: 2]
Magnesium shows reactions typical of a Group 2 metal.
(a)
Draw a labelled diagram to show the bonding in magnesium metal.
[ 2 ]
[Maximum number: 2]
The chlorides of some of the Period 3 elements are shown in Table 2.1.
Table 2.1
(a)
Bismuth is a dense metal in the same group as phosphorus.
[ 2 ]
(i)
Draw a labelled diagram to show the bonding in bismuth metal.
[ 2 ]
[Maximum number: 2]
The elements in Group 2, and their compounds, show many similarities and trends in their properties.
(a)
Magnesium oxide can be formed by the reaction of magnesium and oxygen in the air.
[ 2 ]
(i)
Explain why there is no visible reaction when a piece of magnesium ribbon is exposed to the air.
[ 2 ]
[Maximum number: 1]
Which are features of the structure of metallic copper?
1 a lattice of ions
2 delocalised electrons
3 ionic bonds
A
1, 2 and 3 are correct
B
1 and 2 only are correct
C
2 and 3 only are correct
D
1 only is correct