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8/3/2019 Schema Chemistry Trial Spm 2007
1/21
4541/1
Kimia
Kertas 1
Peraturan Pemarkahan2007
PEPERIKSAAN PERCUBAAN
SIJIL PELAJARAN MALAYSIA 2007
KIMIA
KERTAS 1
PERATURAN PEMARKAHAN
UNTUK KEGUNAAN PEMERIKSA SAHAJA
Peraturan Pemarkahan ini mengandungi 2 halaman bercetak
MARKING SCHEME
AMARAN
Peraturan pemarkahan ini SULIT dan Hak Cipta Jabatan Pelajaran Pahang. Kegunaannya
khusus untuk pemerikasa berkenaan sahaja
LOGODAN
NAMASEKOLAH
8/3/2019 Schema Chemistry Trial Spm 2007
2/21
PEPERIKSAAN PERCUBAAN SPM TAHUN 2007
PAPER 1 : 50 MARKS.
ANSWERS:
Question No Answer Question No Answer
1 B 26 D
2 D 27 A
3 D 28 C
4 C 29 D
5 B 30 B
6 A 31 B
7 A 32 C
8 D 33 B
9 C 34 C
10 A 35 A11 B 36 C
12 B 37 A
13 C 38 C
14 B 39 D
15 A 40 C
16 C 41 B
17 D 42 C
18 D 43 A
19 B 44 D
20 C 45 C
21 D 46 D22 A 47 C
23 D 48 B
24 B 49 C
25 B 50 D
8/3/2019 Schema Chemistry Trial Spm 2007
3/21
SULIT 4541/2
1
PEPERIKSAAN PERCUBAANSIJIL PELAJARAN MALAYSIA 2007
KIMIA
KERTAS 2
PERATURAN PEMARKAHAN
UNTUK KEGUNAAN PEMERIKSA SAHAJA
Peraturan Pemarkahan ini mengandungi 8 halaman bercetak
AMARAN
Peraturan pemarkahan ini SULIT dan Hak Cipta Jabatan Pelajaran Pahang. Kegunaannya
khusus untuk pemerikasa berkenaan sahaja
4541/2
Kimia
Kertas 2
Peraturan
Pemarkahan
2007
LOGO DAN
NAMA SEKOLAH
8/3/2019 Schema Chemistry Trial Spm 2007
4/21
SULIT 4541/2
2
PAPER 2
MARKING SCHEME
SPM TRIAL EXAMINATION YEAR 2007
No Sub Answer Mark
1 (a)(i) - the number of proton in a nucleus- the total number of proton and neutron in a nucleus 11
(ii)S
33
16
1
(iii) S and T 1
(iv) S and T have same number of protons but different
number of neutron. 1
(b)(i) Element C H O
% mass 64.87 13.51 21.62
No. of
mole
64.87/12
= 5.41
13.51/1
= 13.51
21.62/16
= 1.35Smallest
ratio
5.41/1.35
= 4
13.51/1.35
= 10
1.35/1.35
= 1
Empirical formula is C4H10O
1
1
1
(ii) ( 74 )n = 74 / n = 1
-molecular formula is C4H10O
1
1
TOTAL 10
2 (a) 2.8.2 1(b)(i) Ionic bond 1
(ii) -Atom A releases 2 electrons to atom B
- to achieve octet electron arrangement / to form ion A2+.
1
1
(iii) Each ion drawn correctly 1+1
(iv) Has high melting and boiling point 1
(c)(i) CB2 1
(ii) 12 + 2(32) / 12 + 64
76 a.d.p
1
1
TOTAL 10
3 (a)(i) Sodium hydroxide/ potassium hydroxider: formula
1
(ii) 2NaOH + H2SO4 Na2SO4 + 2H2O/ 2KOH + H2SO4 K2SO4 + 2H2O
- Chemical formulae of reactants and products correct 1
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SULIT 4541/2
3
- Equation is balanced 1
(iii) soap 1
(iv) Y 1
(b)(i) W / X 1
(ii) - W is added into sodium carbonate/any metalcarbonate stated in a test tube,
- Gas released turns lime water cloudy
/ - magnesium/zinc is added into W in a test tube,- gas released gives a POP sound with a lighted splinter
1
1
(iii) - W is a strong acid and X is a weak- W completely dissociates in aqueous solution to
produce high concentration of hydrogen ions.
/ X dissociates partially in aqueous solution toproduce low concentration of hydrogen ions.
1
1
TOTAL 10
4 (a)(i) Mg + 2HCl MgCl2 + H2
1. correct formula for the reactants 1m
2. correct formula for the products 1m
3. balance chemical equation 1m 3
(b)(i) Hydrogen gas 1
(b)(ii) 1. Ratio of mol, Mg:H2 is 1:1 1m
2. mol for Mg =24
2.1 / 0.05 - 1m
3. volume of H2 produce = 0.05 x 24 / 1.2 dm 3
/1200 cm 3. 1m3
4(c)(i)
501200
/ 24 cm3/ s 1
20
1200/ 60 cm
3/ s 1
15
1200/ 80 cm
3/ s 1
TOTAL 10
5 (a) ( - ) Magnesium and ( + ) silver 1
(b) - allows movement of ions 1
(c) - magnesium 1
(d) Ag+
+ e Ag 1
(e) - magnesium electrode corroded 1
8/3/2019 Schema Chemistry Trial Spm 2007
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SULIT 4541/2
4
- mass of silver electrode increases/ shiny solid deposited 1
(f) 0 to +2 1
(g)(i) - pointer of galvanometer not deflected/ galvanometer
shows no deflection
1
(ii) -glacial ethanoic acid contains molecules only
- does not contain free moving ions/ free ions.
1
1
TOTAL 10
6 (a)(i) Copper and tin 1
(ii) Bronze / alloy 1
(iii) The presence of foreign atomshinder the sliding of atoms on top of each other.
11
(iv) Medals / statues / monuments 1
(b)(i) 2SO2 + O2 2SO3
-formulae of reactants and products correct- balanced equation
11
(ii) Vanadium(V) oxide/ vanadium pentoxide 1
(iii) -Detergent-electrolyte for accumulator
11
TOTAL 10
SECTION B
7 (a) - labelled diagram for heating of substance Q
- labelled diagram for testing of gas R- limewater is labelled
2
11
4
(b)(i)
(ii)
Copper(II) ion
-add ammonia solution and then in excess-blue precipitate soluble in excess ammonia solution
produces a dark blue solution.
1
1
1
3
(c) -heat the solution V until a saturated solution is
produced.- cool to room temperature
-filter the crystal formed
-dry the crystal with filter paper.
1
11
1
4
(d) Magnesium/aluminium/zinc
- blue solution turns pale / colourless
1
1
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SULIT 4541/2
5
/ brown solid deposited 2
(e) -Excess zinc oxide is added into dilute sulphuric acid- filter the mixture/filter
- add sodium carbonate solution into the filtrate/add
sodium carbonate.
- while precipitate produced-filter dan dry the zinc carbonate with filter paper/ filter
and dry.-Equation:
ZnO + 2HNO3 Zn(NO3)2 + H2O
Zn(NO3)2 + Na2CO3 ZnCO3 + 2NaNO3
11
1
1
1
1
17
TOTAL 20
8 (a) Part X hydrophobic/hydrocarbon 1m
Part Y hydrophilic/ionic 1mParx X dissolves in grease 1mPart Y dissolves in water 1m 4
(b) 1.The cloth in experiment II is clean whereas the cloth
in Experiment I is still dirty.
2.In hard water,soap react with magnesium ion3.to form scum
4.Detergent are more effective in hard water
5.Detergent does not form scum6.Detergent are better cleansing agen then soap to
remove oily stain.
[ each points 1m ]
6
(c ) Patient X : Analgeis/anpirin - 1m
Patient Y: Antibiotic/penicillin/streptomycin 1mPatient Z ; Psychotherapeutic / antidepressant 1m 3
(d)(i) Precaution:1.Take after food.
2. Swallowed with plenty of water
Explain:1. Acidic and can cause irritation of the stomach.
2. To avoid internal bleeding/ulceratiion
[precaution 1m]
[explain 1m ] 2
(d)(ii) 1.To make sure all the bacteria are killed /
becomes ill again 1m
2. bacteria become more resistant. 1m3.Need stronger antibiotic to fight the same infection
1m
3
(d)(iii) 1.Drowsiness 1m
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2. poor coordination/light-headedness 1m 2
TOTAL
20
SECTION C9 (a)(i) -heat of combustion is the heat released when 1 mole of
ethanol burnt completely in oxygen. 1
(ii) C2H5OH + 3O2 2CO2 + 3H2O- chemical formulae of reactants and products
correct
- equation is balanced
1
1
(iii) Energy
2CO2 + 3H2O
H = -1376 kJ mol-1
C2H5OH + 3O2
- energy is labeled for the y- axis and energy level
correctly drawn- reactants and product at the correct energy level
1
1
(iv) Relative molecular mass of ethanol = 2(12) + 6 + 16 / 46
Number of mole of ethanol = 2.3/46= 0.05
Heat change = 0.05 x 1376 kJ
= 68.8 kJ /= 68800 J
Temperature increased = 688004.2 x 500
= 32.8oC
Final temperature of water = 28.0 + 33.8= 60.8 oC
1
1
1
1
1
(b) -labelled diagram-arrangement of apparatus is functional
Procedure:
11
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- 200cm3 of water is measured using a measuring
cylinder
- and poured into a copper tin.- The intial temperature of water is measured and
recorded
- A spirit lamp is filled with butanol and weighed- The spirit lamp is light and put under the coppercan.
- The water is stirred continuously with a
thermometer.- When the temperature of water increased by
30oC, the flame is put off.
- The spirit lamp is weighed again- The highest temperature is recorded.
1
1
1
1
11
Results:
Mass of weight of spirit lamp +
butanol /g
Final mass of spirit lamp + butanol /g
Mass of butanol used/g
Highest temperature of water /oC
Initial temperature of water /oC
Increased in temperature /o
C
-results tabulated in table form
-unit stated
11
20
10 a i) A:Propanoic acid and its structureB:Propene and its structure
C:Propane and its structure
22
2
ii) B will decolourise the acidified potassiummanganate(VII) while there is no change for the reaction
of C.
B is able to undergo addition reaction due to the presenceof the double bond.// unsaturated state
C is a saturated compound with no double bonds so no
2
2
8/3/2019 Schema Chemistry Trial Spm 2007
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SULIT 4541/2
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addition reaction can take place.
iii) 2 cm3
of Propan-1-ol is added to 2 cm3
of A in a boilingtube.
The mixture is shaken and about 1 cm3 of concentrated
sulphuric acid is added to it.
The mixture is carefully heated over a low flame forabout 2- 3 minutes.
3
b i) Alkene
CnH2n ( n= 2,3,4.)
1
1
ii) Rajah: Polythene
Manufacture of plactic bagsMaking toys
1
2
iii) Recycle
Reuse
2
20
8/3/2019 Schema Chemistry Trial Spm 2007
11/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
1
PEPERIKSAAN PERCUBAAN
SIJIL PELAJARAN MALAYSIA 2007
KIMIA
KERTAS 3
PERATURAN PEMARKAHAN
UNTUK KEGUNAAN PEMERIKSA SAHAJA
Peraturan Pemarkahan ini mengandungi 11 halaman bercetak
MARKING SCHEME
TRIAL EXAM 2007
4541/3
Kimia
Kertas 3
Peraturan
Pemarkahan
2007
AMARAN
Peraturan pemarkahan ini SULIT dan Hak Cipta Jabatan Pelajaran Pahang. Kegunaannya
khusus untuk pemerikasa berkenaan sahaja
LOGO DAN
NAMA SEKOLAH
8/3/2019 Schema Chemistry Trial Spm 2007
12/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
2
PAPER 3
Question
NumberRubric Score
[Able to write the initial reading, the final reading and the volume of
hydrochloride acid used for experiment I in two decimal points
accurately]
Answer:
1. The initial burette reading = 5.55 cm3
2. The final burette reading = 31.55 cm3
3. The volume of hydrochloride acid used = 26.00 cm3
3
[Able to write any two of the initial reading, the final reading and
the volume of hydrochloride acid used for experiment I inaccurately]
2
[Able to write any one of the initial reading, the final reading and
the volume of hydrochloride acid used for experiment I accurately]1
1(a)
No response or wrong response 0
Question Rubric Score
8/3/2019 Schema Chemistry Trial Spm 2007
13/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
3
Number
[Able to construct a table that consists of the following three aspects
with unit correctlt]
Msnipulsted variable
Experiment I and Experiment II
Responding variable
Initial burette reading,the final burette raeding and Constantvariable:the volume of acid used
Sample Answer:
Experiment
Initial burette
reading/
cm3
Final
Burette
reading /
cm3
Volume of
acid / cm3
I 5.55 31.55 26.00
II 2.55 X X 2.55
3
[Able to construct a table that consists of the following three aspects
with or without unit correctlt]
Msnipulated variableExperiment I and Experiment II
Responding variable
Initial burette reading,the final burette raeding and Constant
variable:
the volume of acid used
Sample Answer:
Experiment
Initial burette
reading/
cm3
Final
Burette
reading /
cm 3
I 5.55 31.55II 2.55 X
2
[Able to construct a table that consists of the following three aspects
with or without correctly]
Msnipulated variableExperiment I and Experiment II
Responding variable
Initial burette reading,the final burette raeding and Constant
variable:
the volume of acid used
Sample Answer:
Initial burettereading/
cm3
Final
Burette
reading /
cm3
5.55 31.55
2.55 X
1
1(b)
No response or wrong response 0
Question Rubric Score
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SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
4
Number
[ able to state the three variable correctly]
Manipulated variable:
Type of acids / monoprotic and diprotic acids/ hydrochloride acid
and sulfuric acid
Responding variable:
The volume of acid usedConstant variable:
Volume of acid / volume and concentration of sodium hydroxide
3
[ able to state any two variable correctly]2
[ able to state any one variable correctly]1
1(c)
No response or wrong response 0
QuestionNumber Rubric Score
[able to give the hypothesis correctly by stating the following three
aspects]
Manipulated variable:Type of acids / monoprotic and diprotic acids/ hydrochloride acid
and sulfuric acid
Effect that is related to the responding variable:
The volume of acid used
Direction of effect
Different
Sample answer:
The volume of acid used was different when different type of acid
used.
3
[able to give the hypothesis correctly by stating any two of the
following three aspects] 2
[able to give the hypothesis correctly by stating any one of the
following three aspects] 1
1(d)
No response or wrong response 0
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SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
5
Question
NumberRubric Score
[able to show all steps how to predict a value for X with two decimal
point and unit correctly]
Answer:
1. The volume of acid used in Experiment I = 26.00 cm
3
2. The volume of acid used in Experiment II = 200.26
/ 13.00 cm3
3. The value of X = 15.55 cm3
3
[able to show two steps how to predict a value for X with two decimal
point and unit correctly] 2
[able to show one step how to predict a value for X with two decimal
point and unit correctly] 1
1(e)
No response or wrong response 0
Question
NumberRubric Score
[able to state the direct purpose accurately of why the initial reading
and the final reading of burette must be recorded]
Sample answer:
To determine the molarity of acid used.
3
[able to state the direct purpose correctly of why the initial reading and
the final reading of burette must be recorded]
Sample answer:
To determine the volume of acid used.
2
[able to state indirect purpose correctly of why the initial reading and
the final reading of burette must be recorded]
Sample answer:
state the volume of acid
1
1(f)
No response or wrong response 0
8/3/2019 Schema Chemistry Trial Spm 2007
16/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
6
Question
NumberRubric Score
[able to give the meaning of the end point accuratelly]
Sample answer:
1. When all hydroxide ions have reacted completely with
hydrogen ion.
3
[able to give the meaning of the end point correctly]
Sample answer:
1. hydroxide ions ,reacted completely with hydrogen ion.
2
[able to give the meaning of the end point ]
Sample answer:
1. hydroxide ions reacted / hydrogen ion reacted
1
1(g)
No response or wrong response 0
Question
NumberRubric Score
[able to state three observations correctly]
Sample answer:
1. the pink colour of the solution turned to colourless
2. the final volume of the solution increases.
3. the initial reading of burette in experiment I is 5.55 cm3
4. the final reading of burette in experiment I is 31.55 cm
3
5. the initial reading of burette in experiment II is 2.55 cm3
6. The burette reading increases.
7. The volume of acid in the burette decrease.
3
[able to state two observations correctly]2
[able to state one observations correctly]1
1(h)
No response or wrong response 0
Question Rubric Score
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17/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
7
Number
[able to show all steps to calculate the molarity of hydrochloride acid
in experiment I correctly]
Sample answer:
1. ratio of mol HCl: NaOH is 1:12. mol of NaOH =
1000
)25(0.2/0.05 mol.
3. molarity of HCl =26
)1000(05.0/1.92 mol .dm
-3/1.9 mol dm
-3.
/2.0 mol dm-3
.
3
[able to show two steps to calculate the molarity of hydrochloride
acid in experiment I correctly] 2
[able to show one step to calculate the molarity of hydrochloride acid
in experiment I correctly] 1
1(i)
No response or wrong response 0
Question
NumberRubric Score
[able to make classifying of all three acids correctly]
Sample answer:
Name of acid Type of acid
Ethanoic acid Monoprotic
Hydrochloric acid Monoprotic
Sulphuric acid diprotic
3
[able to make classifying of any two acids accurately] 2[able to make classifying of any one acids accurately] 1
1(j)
No response or wrong response 0
Question Rubric Score
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18/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
8
Number
[able to give the aim of the experiment accurately by stating]
Manipulated variable based on Diagram 2.1
Pairs of metals
The accurate characteristic that can be detected from the
responding variable based on Diagram 2.1
Potential difference / voltmeter reading.
Sample answer:
To construct the electrochemical series based on the potential
difference between pairs of metals
3
[able to give the aim of the experiment correctly by stating]
General statement of the manipulated variable
Two metals
The accurate characteristic that can be detected from the
responding variable based on Diagram 2.1
voltmeter reading.
Sample answer:
To construct the electrochemical series based on the voltmeter reading
between two metal.
2
[able to give a relevant idea with the aim of the experiment by stating]
The correct manipulated variable.
The correct characteristic but not relevant to the responding
variable
Sample anser:
To compare/to study/defferentiate between pairs of metal
1
2(a)
No response or wrong response 0
Question Rubric Score
8/3/2019 Schema Chemistry Trial Spm 2007
19/21
SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
9
Number
[able to state three variable correctly]
Manipulated variable
Pairs of metals
Responding variable
Potential difference / voltmeter reading
Constant variableconcentration of electrolyte, copper electrode
3
[able to state any two variable correctly]2
[able to state any one variable correctly]1
2(b)
No response or wrong response 0
Question
NumberRubric Score
[able to give the hypothesis correctly by stating;]
The manipulated variable accuratelyPairs of metals
Comparison of the possibility of the accurate effect of the
responding variable
Potential difference/ voltmeter reading
Sample answer:
The further apart the pair of metals in the electrochemical series, the
greater is their potential difference/voltmeter reading
3
[able to give the hypothesis correctly by stating;]
The manipulated variable accurately
Pairs of metals
Comparison of the possibility of the accurate effect of theresponding variable
voltmeter reading
Sample answer:
Difference the pair of metals in the electrochemical series, difference
voltmeter reading
2
[able to give the hypothesis correctly by stating;]
The manipulated variable accuratelyType of metals
Idea of the comparison of the possibility of the correct effect of
the responding variable
The voltage
Sample answer:
Difference type of metals, difference voltage
1
2(c)
No response or wrong response 0
Question Rubric Score
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SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
10
Number
[Able to state complete material and apparatus to obtain the
information about the following three variables.]
Manipulated variable
Metal P,metal Q, metal R, metal S , metal T, metal U
Responding variable
VoltmeterConstant variable#0.1 mol. dm
-3# sulphate solution of U , beaker ,wires
3
[Able to state complete material and apparatus to obtain any two of
the information about the following three variables.] 2
[Able to state complete material and apparatus to obtain any one of
the information about the following three variables.] 1
2(d)
No response or wrong response 0
Question
NumberRubric Score
[Able to state all procedures correctly ]
1. Add/put in sulphate solution of U/ copper(II) sulphate into a
beaker.
2. Dip the pair on metals electrodes into the solution in the beaker.
3. The electrodes are connected to the voltmeter .
4. The reading of the voltmeter is recorded.
5. steps 1 to 5 are repeated using other metal to replaces negative
electrode.
3
[Able to state procedures 1-5 correctly ]2
[Able to state procedures 1-3 correctly ] 1
2(e)
No response or wrong response 0
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SULIT 4541/3 (PP)
4541/3(PP) @ 2007 Hak Cipta Jabatan Pelajaran Pahang
Question
NumberRubric Score
Able to make labeled tabulation of data with suitable unit that can
give information about the three following variables:
Manipulated variable
Manipulated variable
Pairs of metalsResponding variablePotential difference / voltmeter reading
Constant variableU electrode/copper electrode
Sample answer:
Pair of metals Potential difference/
voltmeter reading (V)
Negative terminal of
the cell
P/U 2.7 P
Q/U 2.0 Q
R/U 1.1 R
S/U 0.8 S
T/U 0.5 T
U/U 0.0 -
3
Able to make labeled tabulation of data without unit that give
information about any two of the variables.2
Able to make labeled tabulation of data without unit that give
information about any one of the variables.1
2(f)
No response or wrong response 0