1
1 mark
Which of the following is not involved in metallic bonding?
Positive ions
Negative ions
Delocalised electrons
Electrostatic attraction
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Metals (SQA National 5 Chemistry): Exam Questions
Exam code: X813 75
23 mins23 questions
2
1 mark
Four different metals were connected to silver in a cell.
The results obtained were recorded in the table.
Metal | Voltage (V) |
Iron | 0.9 |
Zinc | 1.1 |
Magnesium | 2.7 |
Metal X | 1.5 |
Which of the following could be metal X?
You may wish to use the data booklet to help you.
Aluminium
Sodium
Nickel
Copper
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3
1 mark
Which of the following is not a redox reaction?
Zn(s) + 2H+ (aq)
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Zn2+ (aq) + H2(g)Cu(s) + Cl2(g)
Cu2+ (Cl- )2(s)Br2(aq) + 2Fe2+ (aq)
2Fe3+ (aq) + 2Br- (aq)Ba2+ (aq) + SO4 2- (aq)
Ba2+ SO4 2- (s)
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4
1 mark
Which of the following substances in the table below would have the following structure?
Substance | Melting point (°C) | Boiling point (°C) | Conducts electricity | |
Solid | Liquid | |||
A | 30 | 2229 | yes | yes |
B | -118 | 90 | no | no |
C | 714 | 1412 | no | yes |
D | 2077 | 4000 | no | no |
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5
1 mark
When magnesium reacts with dilute hydrochloric acid, magnesium chloride is formed.
Name the other substance formed.
Hydrogen chloride
Hydrogen
Chlorine
Water
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6
1 mark
The ion electron equations for the reactions taking place during the electrolysis of aluminium oxide are given below.
Al3+ + 3e- Al
2O2- O2 + 4e-
The redox equation for the overall reaction is
4Al3+ + 6O2-
4Al + 3O23Al3+ + 3O2-
3Al + 3O2Al3+ + 2O2-
Al + O2 + e-Al3+ + 2O2- + 3e-
Al + O2 + 4e-
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7
1 mark
Which line in the table shows the properties of a metal?
Melting point (°C) | Boiling point (°C) | Conducts electricity | ||
Solid | Liquid | |||
A | 30 | 2229 | yes | yes |
B | -118 | 90 | no | no |
C | 714 | 1412 | no | yes |
D | 2077 | 4000 | no | no |
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8
1 mark
Information about the reactions of three different metals, X, Y and Z is given in the table.
Reaction with | |||
Metal | Oxygen | Dilute acid | Water |
X | reacts | reacts | no reaction |
Y | reacts | no reaction | no reaction |
Z | reacts | reacts | reacts |
Which of the following correctly shows the metals in order of increasing reactivity?
X, Y, Z
Y, X, Z
Z, X, Y
Z, Y, X
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9
1 mark
An electrochemical cell was set up by joining two metals, A and B, in an electrolyte as shown.
The direction of electron flow is from metal A to metal B.
Which line in the table is correct for this cell?
You may wish to use the data booklet to help you.
Metal A | Metal B | |
A | nickel | zinc |
B | zinc | aluminium |
C | aluminium | magnesium |
D | aluminium | nickel |
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10
1 mark
The ion-electron equations for the reduction of magnesium ions and silver(I) ions are
Mg2+ (aq) + 2e− Mg(s)
Ag+ (aq) + e− Ag(s)
The redox equation for the overall reaction is
Mg(s) + 2Ag+ (aq)
Mg2+ (aq) + 2Ag(s)Mg2+ (aq) + 2Ag(s)
Mg(s) + 2Ag+ (aq)Mg(s) + Ag+ (aq) + e−
Mg2+ (aq) + 2Ag(s) + 2e−Mg2+ (aq) + 2Ag(s) + 2e−
Mg(s) + Ag+ (aq) + e−
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11
1 mark
Which line in the table shows what would be observed during the electrolysis of copper chloride, using a d.c. supply?
At the positive electrode | At the negative electrode | |
A | gas forms | solid forms |
B | gas forms | gas forms |
C | solid forms | gas forms |
D | solid forms | solid forms |
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12
1 mark
Metallic bonding is a force of attraction between:
positive ions and delocalised electrons
negative ions and delocalised electrons
negative ions and positive ions
a shared pair of electrons and two nuclei.
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13
1 mark
Metals used to make aircraft have a density of less than 3 g cm−3 and have to withstand temperatures up to 600 °C.
Which line in the table gives the correct data for a metal used to make aircraft?
Melting point (°C) | Density (g cm−3 ) | |
A | 98 | 0.97 |
B | 660 | 2.70 |
C | 1854 | 6.52 |
D | 1085 | 8.96 |
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14
1 mark
Which of these metals can only be extracted from its ore by electrolysis and forms an oxide that is insoluble in water?
You may wish to use the data booklet to help you
Aluminium
Calcium
Copper
Lead
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15
1 mark
Which statement correctly describes the electron flow in the cell?
You may wish to use the data booklet to help you.
Through the electrolyte from aluminium to nickel.
Through the electrolyte from nickel to aluminium.
Through the connecting wire from nickel to aluminium.
Through the connecting wire from aluminium to nickel.
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16
1 mark
Which metal, when paired with magnesium in a cell, will produce the highest voltage?
You may wish to use the data booklet to help you.
Iron
Lead
Tin
Zinc
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17
1 mark
The reactions occurring at each electrode are:
Beaker A Br2(ℓ) + 2e− 2Br− (aq)
Beaker B SO3 2− (aq) + H2O(ℓ) SO4 2− (aq) + 2H+ (aq) + 2e−
Which of the following equations is the overall redox reaction in the cell?
You may wish to use the data booklet to help you.
Br2(ℓ) + SO3 2− (aq) + H2O(ℓ) + 2e−
2Br− (aq) + SO4 2− (aq) + 2H+ (aq) + 2e−2Br− (aq) + SO4 2− (aq) + 2H+ (aq)
Br2(ℓ) + SO3 2− (aq) + H2O(ℓ)Br2(ℓ) + SO3 2− (aq) + H2O(ℓ)
2Br− (aq) + SO4 2− (aq) + 2H+ (aq)2Br− (aq) + SO4 2− (aq)
Br2(ℓ) + SO3 2− (aq)
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18
1 mark
Four cells were made by joining silver to different metals.
The cells produced the following voltages 2·7 V, 1·1 V, 0·9 V and 0·5 V
The metals used were copper, zinc, iron and magnesium.
Which voltage was produced in the cell containing silver and copper?
You may wish to use the data booklet to help you.
2·7 V
1·1 V
0·9 V
0·5 V
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19
1 mark
Information about the reactions of three different metals, X, Y and Z is given in the table.
Metal | Reaction with dilute acid | Reaction with water |
X | reacts | no reaction |
Y | no reaction | no reaction |
Z | reacts | reacts |
Which of the following shows the metals in order of increasing reactivity?
Y, Z, X
Z, X, Y
Y, X, Z
X, Y, Z
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20
1 mark
Information about the reactions of four different metals, W, X, Y and Z is given in the table.
Metal | Reaction with dilute acid | Reaction with water |
W | moderate reaction | no reaction |
X | fast reaction | slow reaction |
Y | slow reaction | no reaction |
Z | fast reaction | no reaction |
The order of reactivity of the metals, starting with the most reactive is
X, Z, W, Y
Y, W, Z, X
Z, X, W, Y
Y, W, X, Z.
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21
1 mark
The ion-electron equations for the oxidation and reduction steps in the reaction between hydrogen and oxygen are given below.
H2 (g) 2H+ (aq) + 2e-
2H2O(ℓ) + O2 (g) + 4e- 4OH- (aq)
The redox equation for the overall reaction is
H2 (g) + 2H2O(ℓ) + O2 (g) + 4e-
2H+ (aq) + 4OH- (aq) + 2e-2H2 (g) + 2H2O(ℓ) + O2 (g)
4H+ (aq) + 4OH- (aq)H2 (g) + 2H2O(ℓ) + O2 (g)
2H+ (aq) + 4OH- (aq)2H2 (g) + 2H2O(ℓ) + O2 (g) + 4e-
4H+ (aq) + 4OH- (aq) + 4e-
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22
1 mark
Which of the following metals, when connected to lead in a cell, would produce the highest reading on the voltmeter?
You may wish to use the data booklet to help you.
Zinc
Tin
Nickel
Lead
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23
1 mark
Metallic bonding is a force of attraction between
a shared pair of electrons and two nuclei
negative ions and delocalised electrons
negative ions and positive ions
positive ions and delocalised electrons.
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