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Examination Number
Centre Number
Page 2 of 78
SECTION A
Answer all the questions in this section. Choose the best answer from the letters A, B, C or D
and then mark the letter with a cross (X).
For example if the answer is B,
it is shown
as:
ANSWER GRID
1
A
B
c
D
11
A
B
c
D
2
A
B
c
D
L2
A
B
c
D
3
A
B
c
D
13
A
B
c
D
4
A
B
c
D
L4
A
B
c
D
5
A
B
C
D
15
A
B
C
D
6
A
B
c
D
16
A
B
c
D
7
A
B
C
D
L7
A
B
C
D
I
A
B
c
D
18
A
B
c
D
9
A
B
c
D
19
A
B
c
D
10
A
B
c
D
20
A
B
c
D
Page 3 of 78
SECTION
A [20 marks]
grid provided in this question paper'
Answer all the questions on the answer
AlWhichofthefollowingisnotalaboratoryrule?
A
B
C
D
Do not write on the board
Do not eat while in the laboratory
AlwaYs Put on closed shoes
AlwaYs close gas taPs
A2Alearneraccidentallymixedamrnoniumchlorideandcommonsalt'Whatmethodwould
the mixture?
You use to seParate
A
B
C
D
A3
Decantation
Filtration
Floatation
Sublimation
experiment are shown in the chromatogram
The results of a paper chromatography
below.
i element
X is an aqueous solution of a salt of a Group
element
Y is an aqueous solution of a salt of a transition
lvent front
Origin
Which row is correct?
Large
A
Rr
value
niquires a locating agent
\,/
I
ts
X
c
X
D
Y
Y
--T
_l
Page 4 of 78
a gas'
is a cooling curve for
The following diagram
A4
TemPerature
ec)
at stage V?
What Process occurs
A
B
C
D
Boiling
Condensation
Melting
Sublimation
which one is an ion?
From the table below'
A5
Particles in the substance
A
B
c
D
A6
that
to line the inside of furnaces
used
is
It
point'
a high melting
Magnesium oxide has
This is because it "'
at high temperatures'
operate
A
B
C
D
A7
its molecules'
has strong forces between
substance'
is a simPle molecular
has metallic bonds'
is an ionic comPound'
shown in the
relative abundance is
whose
isotopes
four
has
Y
Naturally occurring element
table below'
Examination Number
Centre Number
Page 5 of 78
Find the relative atomic mass of the element.
A
B
c
D
A8
207.24
706.25
204.22
The chemical formula for ammonia gas is NH:. Calculate the number of atoms contained
in 859 of ammonia gas,
A
B
C
D
A9
208.26
3.0 x
102s
atoms
1,2 x 102s atoms
3.0 x
1024
atoms
2.4 x l02a atoms
Sodium hydroxide was used to neutralise sulphuric acid as shown in the equation below.
2NaOH
+
HzSO+
-+
NazSO+
+
2HzO
How much sodium hydroxide would be used to neutralise 490 tons of sulphuric acid.
600 tons
A
B
C
D
A10
450 tons
200 tons
150 tons
A learner placed 2009 of calcium carbonate into a conical flask and added 500cm3 of a 1.5
molar dilute hydrochloric acid solution.
Conical flask
1.sM dil. Hcl
2009 CaCO:
What would remain in the flask at the end of the chemical reaction?
A
B
C
D
Calcium chloride and water only,
Aqueous calcium hydroxide only.
Calcium carbonate, aqueous calcium hydroxide and water.
Calcium carbonate, aqueous calcium chloride and water,
Z
Page 6 of 78
Atl
Solution Q reacted with aqueous sodium hydroxide producing a gas which changed the
colour of red litmus paper.
Which of the following could have been solution Q?
Ammonium sulphate
A
B
C
D
A12
Calcium sulPhate
Potassium sulphate
Sodium sulphate
Salts can be classified as acidic, basic or neutral. Which of the following is a pair of basic
salts only?
A
B
C
D
A13
NH4CI and CuSOq
Na:PO+ and Ca(CH3COO)2
ZnClz and BaSO+
A bee sting is acidic. Which household substance will neutralise a bee sting?
A
B
C
D
AL4
KCI and NazCOg
Damp bicarbonate of soda
Damp common salt
Lemon juice
Vinegar
Choose a statement that is most likely to be true about the elements in Group
VIII of the
Periodic Table? They ...
A
B
C
D
A15
form oxides of similar formulae.
occur uncombined in nature.
become less metallic as atomic number increases.
Which of the following statements is correct about alloys? They are ...
A
B
C
D
A16
are equally reactive chemically.
mixtures made up of metals and other substances,
compounds made up of metals and other substances.
metals that are covalently bonded.
formed by heavy metals only.
Choose a fertilizer that contains all the three main elements needed by plants for normal
growth,
A
B
C
D
NH4NO:
KNOr
NH+KzPO+
(COXNH2)2
Page 7 of 78
AL7
A gas escaping from a pipe in a chemical plant is tested and found to be alkaline. What is
this gas?
A
B
C
D
A18
Ammonia
Carbon dioxide
Hydrogen
Oxygen
Some organic compounds are generally non-reactive due
to lack of a specific site for
chemical attack, Which of the following is such a compound?
IT
A H-I-c-t-I-H
T
HHH
IT IT
B
r C-C-H
H-C-C
tltl
HHHH
c
H-C-C-C-C-H
IT IT
i dnil 'i
OHHH
lllll
D c-c-c-c-H
b'I ri
A19
,!
Choose one organic compound that makes up 980/o of natural gas.
A
B
C
D
Butane
Ethane
Methane
Propane
Page
I
A20
to the same homologous series of compounds?
Which of the following structures belong
of 78
HHH
H-C-i-C-tr
ilil
il
HHHH
HHHH
H-C-l-C-L-n
il
il
(iii)
H-c-l-t:til
ilil
(iv)
(i), (iii) and (iv)
(i), (ii) and (iii)
(ii) and (iii)
(i) and (iii)
A
B
c
D
Section
CHa H
(ii)
(i)
Cn,ilr
TT
H--I-f-on
B
[45 marks]
Answer all questions in this section'
Writeyouranswersinthespacesprovidedonthequestionpaper.
81
impoftant to keep the laboratory safe'
Laboratory safety rules and regulations are
(a)
take if the following happened
State the immediate action that a learner should
while carrying out an exPeriment:
(i)
or skin or mouth'
Chemicals got into contact with his or her clothes
t1l
(ii)
She or he burnt or cut herself or himself'
t1l
Examination Number
Centre Number
Page 9 of 78
(b)
The following diagram shows a Bunsen burner, the most commonly used heating
apparatus in the chemistry laboratory,
Give
one reason why the air hole should be fully open when the Bunsen burner is
in use.
ill
(c)
One of the gases used in a Bunsen burner is methane.
(i)
State all products of combustion of this gas in the Bunsen burner when the
air-hole is fully open.
[1]
(ii)
One of the products of complete combustion of methane is a pollutant.
Name the product and state its effect on the environment.
Name........
Effect.....,..
................
tll
tll
[Total: 6 marks]
=
Centre Number
Examination Number
Page 7O of 78
82
Figure 82.1 shows a separation technique used to separate miscible liquids,
Thermometer
Water out
Liebig condenser
Glass bead
Anti-bumping
granules
ilil
Heat
Figure 82.1
(a)
What is the name of this separation technique?
t1l
(b)
What is the purpose of the glass beads in the fractionating column,
t1l
(c)
Why is the Liebig condenser kept in the slanting position as shown in Figure
B2.L?
t1l
(d)
Apaft from the mixture of miscible liquids, name two other mixtures
which can be separated using this separation technique.
121
Centre Number
Examination Number
Page 77 of 78
Z.0g of pure magnesium ribbon reacted with exactly 100cm3 of 2.0 mol/dm3 hydrochloric
acid.
(a)
Construct a balanced chemical equation for the reaction. Include state symbols.
[3]
(b)
Determine the limiting reagent for the reaction.
tzl
(c)
Calculate the volume of the gas that was evolved at r.t.p.
Volume
t2l
[Total: 7 marks]
I
Centre Number
Examination Number
Page 72 of 78
94 (a)
Table 84 contains atomic mass units (a.m.u) and percentage
(o/o) abundances
for
element Q,
Element a.m.u
a
o/o
abundance
LA7
52
109
48
Table B4
Determine the relative atomic mass of element Q.
Relative atomic
(b)
mass........
l2l
Describe a radioisotope.
t1l
(c)
State one use of
(i)
Carbon-l4 isotope,
i1l
(ii)
Iodine-131 isotope.
l1l
[Total: 5 marks]
Examination Number
Centre Number
Page 13 of 18
Fluorine gas is bubbled through a solution of potassium brornide as shown in the diagram
below.
Fluorine
t
gas
l-:+I-:_-_tr-_._-_u-_-
.-rt---t!.-rt--
.---If---
Potassium bromide
solution
l-:o-:.-_-9_-_
._-_9_-
'est
tube
---------_-_-_'j
\-_-_-l
:
(a)
(i)
Describe what would be observed in the test tube.
tll
(ii)
Write a balanced chemical equation for the reaction that occurs in the test
tube.
l2l
(b)
What would be obserued in the test tube if iodine gas was bubbled
through the potassium bromide solution? Give a reason for your answer.
Obseruation
tll
Reason
t1l
[Total: 5 marks]
e_
Centre Number
Examination Number
Page 74 of 78
86 (a)
Describe the rate of a chemical reaction'
t1l
(b)
State a reason for each observation below.
(i)
Hydrogen peroxide decomposes much faster in the presenc of the
enzyme catalase.
t2l
(ii)
The reaction between man$anese carbonate and dilute hydrochloric
acid speeds up when some concentrated hydrochloric acid is added,
t2l
(iii)
powdered magnesium is used in fireworks rather than magnesium ribbon.
[2]
[Total: 7 marks]
Centre Number
Examination Number
Page 15 of 18
87
During the extraction of zinc, the ore is first roasted in air as illustrated by the equation
below.
ZnS + Oz -+ ZnO + SOz
(a)
Give the common name of the ore in the equation above.
tll
(b)
Name the substance which can be used
to reduce zinc oxide, ZnO.
t1l
(c)
Suggest a reason why sulphur dioxide should not be allowed to escape
into the atmoSphere.
Lzl
(d)
State one use of zinc.
t1l
[Total: 5 marks]
Centre Number
Examination Number
Page 16 of 78
88
The structure displayed below is a polymer that was formed from monomer Y.
T tt, T
-c-c-c-cln, L lt,
IH,
'l
(a)
Name the PolYmer'
t1l
(b)
(i)
Name the monomer Y.
t1l
(ii)
Construct the displayed structure of monomer Y.
t1l
(c)
Monomer Y was reacted with steam under suitable conditions and an organic
compound Z was produced.
(i)
To which homologous series does compound Z belong?
tll
(ii)
Write the general formula of the homologous series stated in (cXi).
[1]
[Total: 5 ma*s]
_,j.r
7
Examination Number
Cenke Number
Page 77 of 78
SECTION
C
Answer any
Cl
[20 marks]
two
questions from this section in the separate Answer Booklet provided.
Lime is an important compound in industry.
(a) (i)
(ii)
State the chemical name of
lime.
tll
Describe how lime is obtained from limestone on a large scale.
Include an equation in your
answer.
(b) (i)
(ii)
Give
two
uses of
lime.
l2l
What environmental problem is likely to arise or be caused by
large scale production of lime? Suggest a possible solution to the
problem.
C2
l2l
t5l
[Total: 10 Marks]
Incjicators are pigments that can be extracted from flowers, fruits or roots and
are used in acid-base titrations.
(a) Describe how you can extract dyes or pigments from flowers.
(b) (i) Name one salt that can be prepared by titration in the laboratory
and give a reason why titration is suitable for preparing the salt.
(ii) Describe an experiment you would carry out using the indicator
t4l
tZl
solution extracted as described in (a) to show that it is an effective
indicator,
t4l
[Total: L0 Marks]
C3
A hydrocarbon V which contains only 3 carbon atoms was bubbled through bromine
solution and there was a rapid decolourisation of the solution,
(a) (i)
(ii)
(iii)
(iv)
Identify the hydrocarbon
V
Draw the structure of the hydrocarbon
t1l
V
tll
To which homologous series does the hydrocarbon V
beicng?
Write the general formula of the homologous series where the
hydrocarbon V
belong.
(b) (i)
(c)
tll
Explain the danger of burning the hydrocarbon V in limited
oxygen,
(ii)
[1:l
t3l
Write the balanced chemical equation for the reaction in
(bXi) above" l2l
Under suitable conditions, the hydrocarbon V was polymerised and the
polymer W was produced. Display the structure of polymer
W.
tll
fTotal: 10 Marksl
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