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UNIVERSITY OF CAMBRIDGE LOCAL EXAMINATIONS SYNDICATE General Certificate of Education Ordinary Level
CHEMISTRY
5070/1
PAPER 1 Multiple Choice MAY/JUNE SESSION 2000
1 hour
Additional materials: Mathematical tables and/or calculator Multiple choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended)
TIME
1 hour
INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet. Read very carefully the instructions on the answer sheet. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. Mathematical tables are available. You may use a calculator. A copy of the Periodic Table is printed on page 16.
By which process does the smell of cooking spread to all the rooms in a house? A
decomposition
B
diffusion
C
displacement
D
distillation
Trichloroethane is a solvent used to remove grease from clothing. How, after use, is the solvent separated from the grease?
3
A
by chromatography
B
by crystallisation
C
by distillation
D
by filtration
The diagram shows a chromatogram of several inks.
black
blue
brown
green
red
Which statement is correct? A
Black ink can be made by mixing green, red and yellow inks.
B
Brown ink can be made by mixing blue and red inks.
C
Yellow ink can be used to make brown ink.
D
Yellow ink may be present in green ink.
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yellow
3 Which graph shows the temperature altering as steam at 110 °C is cooled to –10 °C?
time
5
C
temperature
temperature
B
temperature
A
time
D
temperature
4
time
time
Elements X, Y and Z are in the same period of the Periodic Table. X is a metal, Y is a non-metal and Z shows properties of both metals and non-metals. What is the order of increasing proton (atomic) number? lowest → highest
6
7
A
X
Y
Z
B
X
Z
Y
C
Y
Z
X
D
Z
Y
X
Which statement about an atom is true? A
All the elements have only one nucleon (mass) number.
B
The nucleon (mass) number can be less than the proton (atomic) number.
C
The nucleon (mass) number can equal the proton (atomic) number.
D
The number of neutrons never equals the number of electrons.
In which pair of substances is each substance a mixture? A
air; water
B
limewater; water
C
quicklime; limewater
D
sea water; air
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[Turn over
4 8
Elements X and Y react to form an ionic compound of formula XY. What could be the proton (atomic) numbers of X and Y? X
9
Y
A
3
8
B
6
8
C
8
16
D
12
16
Which of the following contains the same number of molecules as 9 g of water? A
2 g of hydrogen gas
B
14 g of nitrogen gas
C
32 g of oxygen gas
D
44 g of carbon dioxide
10 Calcium reacts with water as shown. Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g) What is the total mass of the solution that remains when 40 g of calcium reacts with 100 g of water? A
58 g
B
74 g
C
138 g
D
140 g
11 The diagram shows the apparatus used to electrolyse lead(II) bromide using inert electrodes.
lamp
lead(II) bromide
Why does the lamp light up only when the lead(II) bromide is melted? A
Bromine atoms in the lead(II) bromide are converted to ions when it is melted.
B
Electrons flow through the lead(II) bromide when it is melted.
C
The ions in lead(II) bromide are free to move only when the solid is melted.
D
There are no ions in solid lead(II) bromide. 5070/1 S00
5 12 The diagram shows the results of an electrolysis experiment using inert electrodes.
liquid X
–
+
Which of the following could be liquid X? A
aqueous copper(II) sulphate
B
concentrated hydrochloric acid
C
dilute sulphuric acid
D
ethanol
13 In an experiment, rods of copper and zinc are dipped into dilute sulphuric acid, with their top ends touching. Hydrogen bubbles collect around the copper rod. zinc rod
copper rod
hydrogen bubbles dilute sulphuric acid Which statement is correct about the experiment? A
Electrons flow from zinc to copper.
B
Copper reacts with the acid.
C
The zinc becomes coated with copper.
D
The zinc is less reactive than copper. 5070/1 S00
[Turn over
6 14 Curve I is obtained by observing the decomposition of 100 cm3 of 1 mol/dm3 aqueous hydrogen peroxide, catalysed by manganese(IV) oxide. 2H2O2(aq) → 2H2O(l) + O2(g)
I I volume of oxygen formed Which alteration to the conditions will produce curve II? A
adding some 0.1 mol/dm3 aqueous hydrogen peroxide
B
lowering the temperature
C
using a better catalyst
D
using less manganese(IV) oxide
15 In which stage in the manufacture of pure silicon is silicon oxidised? A impure silicon(IV) oxide
heat with coke
B impure silicon
heat with chlorine
impure silicon(IV) chloride
C
distil
D pure silicon
heat with hydrogen
16 In which reaction does the oxidation state of iron remain unchanged? A
2Fe + 3Cl2 → 2FeCl3
B
2FeCl2 + Cl2 → 2FeCl3
C
Fe + 2FeCl3 → 3FeCl2
D
Fe2O3 + 6HCl → 2FeCl3 + 3H2O
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pure silicon(IV) chloride
7 17 A bee sting is acidic. Which household substance will neutralise a bee sting? A
damp bicarbonate of soda pH 8
B
damp common salt pH 7
C
lemon juice pH 5
D
vinegar pH 4
18 Which equation represents the neutralisation of dilute sulphuric acid by aqueous sodium hydroxide? → H2O(l)
A
H+ (aq) + OH–(aq)
B
H2SO4(aq) + 2OH–(aq) → SO42– (aq) + 2H2O(l)
C
2Na+(aq) + SO42– (aq)
→ Na2SO4(aq)
D
NaOH(aq) + H+(aq)
→ Na+(aq) + H2O(l)
19 The diagram shows some reactions of copper compounds. Which change is made by adding an acid?
D
malachite CuCO3
copper(II) sulphate CuSO4
C
A
copper(II) oxide CuO
copper Cu
B
20 Why does the colour of aqueous potassium bromide change when chlorine gas is bubbled into it? A
A compound is formed between chlorine and bromine.
B
A solution of potassium chloride is formed.
C
The chlorine oxidises bromide ions to bromine.
D
The potassium bromide is reduced. 5070/1 S00
[Turn over
8 21 Which list contains three elements that all exist as diatomic molecules at room temperature? A
hydrogen, fluorine, neon
B
nitrogen, chlorine, neon
C
nitrogen, oxygen, fluorine
D
oxygen, chlorine, helium
22 Which statement shows that iron is a transition metal? A
Iron(II) sulphate crystals are green.
B
Iron(III) oxide is basic.
C
Iron rusts in moist air.
D
Iron reacts with dilute hydrochloric acid.
23 Which carbonate decomposes on heating to give a black solid and a colourless gas? A
calcium carbonate
B
copper(II) carbonate
C
sodium carbonate
D
zinc carbonate
24 Which substance is not an essential raw material in the extraction of iron in a blast furnace? A
air
B
coke
C
limestone
D
sand
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9 25 Three experiments to investigate the reactivities of three metals are shown.
chromium
manganese
chromium
aqueous nickel sulphate
aqueous nickel sulphate
result: nickel displaced
aqueous manganese(II) sulphate
nickel displaced
manganese not displaced
What is the correct order of reactivity for these three metals? most reactive
→
least reactive
A
chromium
manganese
nickel
B
manganese
chromium
nickel
C
manganese
nickel
chromium
D
nickel
chromium
manganese
26 Which element is liberated at a carbon cathode when aqueous sodium chloride is electrolysed? A
chlorine
B
hydrogen
C
oxygen
D
sodium
27 Which element reacts with oxygen to form a compound that is a gas at room temperature? A
magnesium
B
hydrogen
C
copper
D
carbon
28 Which ion reacts with aqueous ammonia to give a precipitate that dissolves in an excess of ammonia? A
Al3+(aq)
B
Fe2+(aq)
Fe3+(aq)
C
D
Zn2+(aq)
29 In which reaction does dilute sulphuric acid act as an oxidising agent? A
Zn + H2SO4 → ZnSO4 + H2
B
ZnO + H2SO4 → ZnSO4 + H2O
C
Zn(OH)2 + H2SO4 → ZnSO4 + 2H2O
D
ZnCO3 + H2SO4 → ZnSO4 + H2O + CO2
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[Turn over
10 30 Which of the following is composed of silicon dioxide? A
glass
B
mica
C
quartz
D
silicone plastic
31 The diagram shows, by percentages, the principal large-scale uses of chlorine. water treatment making epoxypropane 5% 7%
other uses 10% making other organic compounds
23% making chloroalkanes
11%
making PVC 20%
12% 12% making hydrogen chloride and domestic bleaches
bleaching woodpulp and paper
What is the total pecentage of chlorine used in making organic compounds? A
34%
B
54%
C
61%
D
73%
32 Which product is not manufactured using calcium carbonate? A
cement
B
chlorine
C
glass
D
iron
5070/1 S00
11 33 Which pair of structures are isomers of each other?
A
H
H
H
C
C
H
H
H H
B
C
H
H
O H
C H
O
H
H
H
H
C
C
C
H
H
H
H
H
C
C
H
H
H
O
H
H
C
H
H
H
H
C
C
C
H
H
H
H D
O
H
H
H C
H
C
H
H
H
O
H
C
C
C
H
H
H
H
H
H
H
C
C
C
C
H
H
H
H
H
H
34 The diagrams show the structures of three hydrocarbons. H
H
H
H
H
C
C
C
H
H
H
H
H
H H
H H
C
C
C
C
H
H
H
H
H
H
H
H
H
C
C
C
C
H
H
H
H
H
Which statement is correct for all three compounds? A
They are isomers of each other.
B
They have the same general formula.
C
They have the same physical properties.
D
They react with aqueous bromine.
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[Turn over
12 35 The diagram represents an organic compound that contains three different elements.
What could be the compound? A
ethanoic acid
B
ethanol
C
propane
D
propene
36 Which of the following reacts with sodium carbonate to produce carbon dioxide?
A
H
H
H
C
C
H
H
H B
H
C
H
C O
H
H
H
C
C
C
H H
C H
H
H
H
D
H
O
H
C
O
O C O
H
H
C
C
H
H
H
5070/1 S00
13 37 One mole of a hydrocarbon X reacted completely with one mole of hydrogen gas in the presence of a heated catalyst. What could be the formula of X? A
C2H6
B
C3H8
C
C5H10
D
C7H16
38 Nylon (a polyamide) and Terylene (a polyester) are both man-made fibres. Which type of reaction is used to produce both of these polymers? A
addition
B
condensation
C
fermentation
D
hydrolysis
39 A carbohydrate such as starch can be represented as follows. X
X
X
X
What is X? A
carbon
B
hydrogen
C
nitrogen
D
oxygen
40 Part of a polymer molecule has the following structure. ––CH2 ––CH2 ––CH2 ––CH2 ––CH2 ––CH2 –– From which substance is this polymer made? A
C2H4
B
C2H6
C
C3H6
5070/1 S00
D
C3H8
14 BLANK PAGE
5070/1 S00
15 BLANK PAGE
5070/1 S00
Magnesium
Sodium
Calcium
5070/1 S00
Strontium
89
Key
b
X
a
†
72
b = proton (atomic) number
X = atomic symbol
a = relative atomic mass
*58-71 Lanthanoid series †90-103 Actinoid series
88
Ac
Actinium
Ra
Radium
Fr
Francium
87
*
Hafnium
Lanthanum
57
178
Hf
40
Zirconium
Zr
91
Titanium
139
Yttrium
22
48
Ti
La
39
Y
89
Scandium
21
227
56
Barium
Caesium
45
Sc
226
55
137
Ba
133
Cs
38
Rubidium
37
88
Sr
85
Rb
20
Potassium
19
40
Ca
39
12
24
Mg
23
Na
Beryllium
4
Lithium
K
11
3
9
Be
7
II
Li
I
93
Ta
181
Niobium
Nb
90
58
73
52
96
Mo
W
184
Protactinium
Thorium
55
Tc 186
Re
144
Nd
92
60
Uranium
U
238
Neodymium
75
Rhenium
43
Technetium
25
Manganese
Mn 27
59
28
59
29
64
30
65
5
Ru
101
Iron
190
Pm
Osmium
Os
Np 93
Neptunium
61
Promethium
76
44
Ruthenium
26
56
Fe
Sm
150
Iridium
Pu 94
Plutonium
62
152
Eu
Am 95
Americium
63
Europium
78
Platinum
195
Pt
Ir
46
Palladium
Pd
106
Nickel
Ni
192
Samarium
77
45
Rhodium
Rh
103
Cobalt
Co
Gd
157
Gold
Au
197
Silver
96
64
Curium
Cm
Gadolinium
79
47
Ag
108
Copper
Cu
201
Bk
Terbium
Tb
159
Mercury
Hg
97
Berkelium
65
80
48
Cadmium
Cd
112
Zinc
Zn
11
6
Dy
162
Thallium
Tl
204
Indium
Cf 98
Californium
66
Es
Holmium
Ho
165
Lead
Pb
207
Tin
99
Einsteinium
67
82
50
119
Sn
115
32
Germanium
Ge
73
Silicon
In
Gallium
Dysprosium
81
49
31
70
Ga
14
28
Si
Carbon
27
Aluminium
13
12
C
Al
Boron
B 7
14
75
Sb
122
Arsenic
As
Bi
209
Fermium
Fm
Erbium
Er
167
Bismuth
100
68
83
51
Antimony
33
15
Phosphorus
P
31
Nitrogen
N 8
Se
79
Sulphur
S
32
Oxygen
Po
169
Md
Thulium
Tm
101
Mendelevium
69
84
Polonium
52
Tellurium
Te
128
Selenium
34
16
16
O 9
Yb
173
Astatine
At
Iodine
I
127
Bromine
Br
80
Chlorine
No 102
Nobelium
70
Ytterbium
85
53
35
17
Cl
35.5
Fluorine
F
19
Lr
Lutetium
Lu
175
Radon
Rn
Xenon
Xe
131
Krypton
Kr
84
Argon
Ar
40
Neon
103
Lawrencium
71
86
54
36
18
10
Ne
20
Helium
2
0
Hydrogen
VII
4
VI
He
V
1
IV
H
III
The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.).
