Cambridge Assessment International Education Cambridge … (0620... · 2019-10-05 · READ THESE...
16
READ THESE INSTRUCTIONS FIRST Write your centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fuid. DO NOT WRITE IN ANY BARCODES. Answer all questions. Electronic calculators may be used. A copy of the Periodic Table is printed on page 16. You may lose marks if you do not show your working or if you do not use appropriate units. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. CHEMISTRY 0620/33 Paper 3 Theory (Core) May/June 2019 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. Cambridge Assessment International Education Cambridge International General Certifcate of Secondary Education This document consists of 16 printed pages. [Turn over IB19 06_0620_33/2RP © UCLES 2019 *2741549944* This syllabus is regulated for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certifcate.
Transcript of Cambridge Assessment International Education Cambridge … (0620... · 2019-10-05 · READ THESE...
READ THESE INSTRUCTIONS FIRST
Write your centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams or graphs.
Do not use staples, paper clips, glue or correction fluid.DO NOT WRITE IN ANY BARCODES.
Answer all questions.
Electronic calculators may be used.
A copy of the Periodic Table is printed on page 16.
You may lose marks if you do not show your working or if you do not use appropriate units.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
CHEMISTRY 0620/33
Paper 3 Theory (Core) May/June 2019
1 hour 15 minutes
Candidates answer on the Question Paper.
No Additional Materials are required.
Cambridge Assessment International Education
Cambridge International General Certificate of Secondary Education
This document consists of 16 printed pages.
[Turn overIB19 06_0620_33/2RP
© UCLES 2019
*2741549944*
This syllabus is regulated for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.
2
0620/33/M/J/19© UCLES 2019
1 Thediagramshowspartofthestructuresoffivesubstances,A,B,C,DandE.
Na+ Cl – Na+ Cl –
Na+Cl – Na+ Cl –
Na+ Cl – Na+ Cl –
Na+Cl – Na+ Cl –
Ar
Ar
Zn Zn Zn Zn
Zn Zn Zn Zn
Zn
Zn Zn Zn Zn Zn
Ar
Ar
Ar
Ar
A B
D E
C
Br Br
BrBr
Br
Br
Br
Br
Br
Br
C
H
C
HH
H
H
C
H
HH
H
C
H
HH
H
HH
H
(a) Answerthefollowingquestionsaboutthesestructures. Eachstructuremaybeusedonce,morethanonceornotatall.
(i) Which twoofthesestructures,A,B,C,D or E,arecompounds?
..................................................................and ................................................................. [2]
(ii) Which oneofthesestructures,A,B,C,D or E,ismonatomic?
....................................................................................................................................... [1]
(iii) Which oneofthesestructures,A,B,C,D or E,conductselectricitywhensolid?
....................................................................................................................................... [1]
(iv) Which oneofthesestructures,A,B,C,D or E,isthemainconstituentofnaturalgas?
....................................................................................................................................... [1]
(v) Which oneofthesestructures,A,B,C,D or E,isasolidwhichissolubleinwater?
....................................................................................................................................... [1]
(vi) Which oneofthesestructures,A,B,C,D or E,isahydrocarbon?
....................................................................................................................................... [1]
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(b) SubstanceEispresentinair. Airisamixtureofdifferentgases.
Describetwo characteristics of a mixture.
1 .................................................................................................................................................
....................................................................................................................................................
2 .................................................................................................................................................
....................................................................................................................................................
[2]
[Total:9]
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2 Thisquestionisaboutironandironcompounds.
(a) Ironcanbeextractedfromironorebyreductionwithcarboninablastfurnace.
(i) Which oneofthesesubstancesisanoreofiron? Drawacirclearoundthecorrectanswer.
bauxite graphite hematite limestone
[1]
(ii) Theequationshowsoneofthereactionsoccurringintheblastfurnace.
2Fe2O3 + 3C 4Fe + 3CO2
HowdoesthisequationshowthatFe2O3isreduced?
.............................................................................................................................................
....................................................................................................................................... [1]
(iii) Thecarbondioxideformedcanbereducedbycarbon.
CO2 + C 2CO
Theenergyleveldiagramforthisreactionisshown.
energy
progress of reaction
CO2 + C
2CO
Explainhowthisdiagramshowsthatthereactionisendothermic.
.............................................................................................................................................
....................................................................................................................................... [1]
(iv) Explainwhyironisextractedbyreductionwithcarbonandnotbyelectrolysis. Refertothepositionofironinthereactivityseriesinyouranswer.
.............................................................................................................................................
....................................................................................................................................... [1]
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(b) Describethreepropertiesofironthatshowthatitisatransitionelementandnot a Group I
element.
1 .................................................................................................................................................
2 .................................................................................................................................................
3 .................................................................................................................................................
[3]
(c) Ironreactswithchlorinetoformiron(III)chloride,Fe2Cl 6.
(i) Balancethechemicalequationforthisreaction.
.....Fe + .....Cl 2 Fe2Cl 6 [2]
(ii) At 400 °C Fe2Cl 6moleculesdecompose.
Fe2Cl 6 2FeCl 3
Whatismeantbythesymbol ?
....................................................................................................................................... [1]
(d) Thestructureofanionisshown.
Fe
CN
CN
CN
CN
NC
NC
4–
Deduce themolecular formulaof this ion to show thenumberof iron,carbonandnitrogenatoms.
.............................................................................................................................................. [1]
[Total:11]
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3 Thetableshowsthepercentagebymassoftheelementsintheoceansandinthebiosphere.Thebiosphereisalllivingorganisms.
element percentagebymassintheoceans
percentagebymassinthebiosphere
calcium 0.05 0.40
carbon 0.01 39.00
chlorine 1.80 0.05
hydrogen 11.00 6.60
magnesium 0.12 0.10
oxygen 85.80 53.00
silicon 0.00 0.10
sodium 1.15 0.05
otherelements 0.07
total 100.00 100.00
(a) Answerthesequestionsusingonlytheinformationinthetable.
(i) Deducethepercentagebymassofotherelementspresentinthebiosphere.
.............................. % [1]
(ii) Whichmetallicelementispresentintheoceansinthegreatestpercentagebymass?
....................................................................................................................................... [1]
(iii) Givetwomajordifferencesinthepercentagebymassoftheelementsintheoceansandinthebiosphere.
1 ..........................................................................................................................................
.............................................................................................................................................
2 ..........................................................................................................................................
............................................................................................................................................. [2]
(b) Livingorganismsrespire.Waterisproducedduringrespiration.
(i) Nametheotherproductofrespiration.
....................................................................................................................................... [1]
(ii) Describeachemicaltestforwater.
test ......................................................................................................................................
observations ....................................................................................................................... [2]
[Total:7]
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4 Thisquestionisaboutchlorineandcompoundsofchlorine.
(a) Usethekineticparticlemodeltodescribethearrangementandtypeofmotionofthemoleculesin:
● solidchlorine .......................................................................................................................
....................................................................................................................................................
● chlorinegas. .......................................................................................................................
.................................................................................................................................................... [4]
(b) Thegraphshowshowthepressureofchlorinegaschangeswhentemperatureincreases.Thevolumeiskeptconstant.
pressure of
chlorine gas
temperature
Describehowthepressureofthechlorinegaschangeswithtemperature.
....................................................................................................................................................
.............................................................................................................................................. [1]
(c) (i) Complete thewordequationtoshowthehalogenandhalidecompoundwhichreact toformtheproductsiodineandsodiumchloride.
........................+
........................
........................
iodine +sodium
chloride
[2]
(ii) Explain,intermsofthereactivityofthehalogens,whyaqueousbrominewillnot react with aqueoussodiumchloride.
.............................................................................................................................................
....................................................................................................................................... [1]
(d) Chlorinereactswithwarmturpentine,C10H16.
Balancethechemicalequationforthisreaction.
C10H16 + 8Cl 2 .....C + .....HCl [2]
[Total:10]
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5 ThestructureofcompoundSisshown.
C
C
C C
H
O
O
H
H
H
H
H
O
C
C
C
(a) (i) Drawacirclearoundthecarboxylicacidfunctionalgroupinthisstructure. [1]
(ii) Howmanydifferenttypesofatomareshowninthisstructure?
....................................................................................................................................... [1]
(b) ThemeltingpointofpureSis159°C.
TheboilingpointofpureS is 200 °C.
(i) WhatisthephysicalstateofpureS at 100 °C? Explainyouranswer.
.............................................................................................................................................
....................................................................................................................................... [2]
(ii) Which oneofthesestatementsaboutanimpuresampleofcompoundSiscorrect? Tick onebox.
ThemeltingpointofimpureSis159°Cand theboilingpointisabove200°C.
ThemeltingpointofimpureSisbelow159°C andtheboilingpointis200°C.
ThemeltingpointofimpureSis159°Cand theboilingpointis200°C.
ThemeltingpointofimpureSisbelow159°C andtheboilingpointisabove200°C.
[1]
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(c) Aqueousethanoicacidhaschemicalpropertieswhicharetypicalofacids.
Describetwochemicalpropertiesofaqueousethanoicacid.
1 .................................................................................................................................................
....................................................................................................................................................
2 .................................................................................................................................................
....................................................................................................................................................
[2]
(d) Ethanol can be converted into ethene by passing ethanol vapour over a catalyst ofaluminiumoxide.
C2H5OH C2H4 + X
(i) IdentifycompoundX.
....................................................................................................................................... [1]
(ii) Explainwhyacatalystisused.
....................................................................................................................................... [1]
(iii) Drawthestructureofamoleculeofethanol.Showalloftheatomsandallofthebonds.
[1]
(e) Ethenecanbepolymerised.
(i) Statethenameofthepolymerformedfromethene.
....................................................................................................................................... [1]
(ii) Teryleneisalsoapolymer.
State one use of Terylene.
....................................................................................................................................... [1]
[Total:12]
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6 Thisquestionisaboutzincandcompoundsofzinc.
(a) Describehowyoucouldprepareapuresampleofcrystalsofhydratedzincsulfateusingdilutesulfuricacidandanexcessofzinc.
....................................................................................................................................................
....................................................................................................................................................
....................................................................................................................................................
....................................................................................................................................................
.............................................................................................................................................. [3]
(b) Theequationshowstheeffectofheatonanhydrouszincsulfate.
heatZnSO4 ZnO+SO3
(i) Whattypeofchemicalreactionisthis? Tick onebox.
addition
decomposition
displacement
oxidation [1]
(ii) When12.60gofanhydrouszincsulfateisheated,themassofzincoxideformedis6.34g.
Calculatethemassofzincoxideformedwhen63.0gofanhydrouszincsulfateisheated.
massofzincoxide=...............................g[1]
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(c) Completethetabletocalculatetherelativeformulamassofanhydrouszincsulfate,ZnSO4.
UseyourPeriodicTabletohelpyou.
type of atom numberofatoms relativeatomicmass
zinc 1 65 1 ×65=65
sulfur
oxygen
relativeformulamass=.............................. [2]
(d) Completethetabletoshowthenumberofelectrons,protonsandneutronsinthesulfuratomandzincionshown.
numberofelectrons
numberofneutrons
numberofprotons
36S16
67Zn2+30
30
[4]
(e) Analloycontainszinc,copperandaluminium.
Whatismeantbythetermalloy?
....................................................................................................................................................
.............................................................................................................................................. [1]
[Total:12]
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7 Astudentinvestigatestherateofreactionoflargepiecesofmagnesiumcarbonatewithanexcessofdilutenitricacid.
MgCO3 + 2HNO3 Mg(NO3)2 + CO2 + H2O
(a) Namethesaltformedwhenmagnesiumcarbonatereactswithdilutenitricacid.
.............................................................................................................................................. [1]
(b) Thegraphshowshowthevolumeofcarbondioxidechangeswithtime.
0 20 40 60 80
time / s
volume of
carbon dioxide
/ cm3
100 120 140
60
50
40
30
20
10
0
(i) Afterhowmanysecondsdidthereactionfinish?
.............................. s [1]
(ii) Fromthegraph,deducethevolumeofcarbondioxideproducedduringthefirst50secondsoftheexperiment.
..............................cm3 [1]
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(iii) The experiment is repeated using smaller pieces of the same mass of magnesiumcarbonate.
Allotherconditionsarekeptthesame.
Drawalineon the gridfortheexperimentusingsmallerpiecesofmagnesiumcarbonate. [2]
(iv) Howdoesincreasingthetemperatureaffecttherateofthisreaction? Allotherconditionsarekeptthesame.
....................................................................................................................................... [1]
(v) Howdoesdecreasingtheconcentrationofnitricacidaffecttherateofthisreaction? Allotherconditionsarekeptthesame.
....................................................................................................................................... [1]
(c) Nitricacidcontainsnitrateions.
Completethesesentencesaboutthetestfornitrateionsusingwordsfromthelist.
aluminium ammonia blue chloride copper
green iron nitrate oxygen red
Aqueoussodiumhydroxideand..............................foilareaddedtothesolution
beingtested.Themixtureiswarmedgently.The..............................producedturns
damp..............................litmuspaper............................... [3]
[Total:10]
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8 ThisquestionisaboutGroupIVelementsandtheircompounds.
(a) Leadcompoundsarepollutantsintheair.
(i) State onesourceofleadcompoundsintheair.
....................................................................................................................................... [1]
(ii) State oneadverseeffectofleadcompoundsonhealth.
....................................................................................................................................... [1]
(b) Thetableshowshoweasyitistoreducefourmetaloxideswithcarbon.
metaloxide easeofreductionwithcarbon
bismuth(III) oxide reducedbycarbononlyabove250°C
chromium(III) oxide reducedbycarbononlyabove1200°C
lead(II) oxide reducedbycarbononlyabove440°C
zincoxide reducedbycarbononlyabove990°C
Usetheinformationinthetabletoputthefourmetalsinorderoftheirreactivity. Puttheleastreactivemetalfirst.
least reactive most reactive
[2]
(c) Partofthestructureofgraphiteisshown.
Usetheinformationfromthediagramtoexplainwhygraphiteisusedasalubricant.
....................................................................................................................................................
.............................................................................................................................................. [1]
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0620/33/M/J/19© UCLES 2019
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge
Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download
at www.cambridgeinternational.org after the live examination series.
Cambridge Assessment International Education is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of the University of
Cambridge Local Examinations Syndicate (UCLES), which itself is a department of the University of Cambridge.
(d) Whencarbonburnsinalimitedsupplyofair,apoisonousgasisformed.
Name this gas.
.............................................................................................................................................. [1]
(e) Whencarboniscompletelyburnedinair,carbondioxideisformed. Carbondioxideformsaslightlyacidicsolutioninwater.
Which oneofthesepHvaluesisthepHofaslightlyacidicsolution? Drawacirclearoundthecorrectanswer.
pH 6 pH 7 pH 8 pH 10
[1]
(f) Carbondioxideisagreenhousegas.
(i) Name oneothermajorgreenhousegas.
....................................................................................................................................... [1]
(ii) State oneeffectthatgreenhousegaseshaveontheenvironment.
....................................................................................................................................... [1]
[Total:9]
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Gro
up
Th
e P
eri
od
ic T
ab
le o
f E
lem
en
ts
1 Hh
yd
rog
en
1
2
He
he
lium
4
III
III
IVV
VI
VII
VII
I
3 Li
lith
ium
7
4 Be
be
rylli
um
9
ato
mic
nu
mb
er
ato
mic
sym
bo
l
Ke
y
na
me
rela
tive
ato
mic
ma
ss
11
Na
so
diu
m
23
12
Mg
ma
gn
esiu
m
24
19 K
po
tassiu
m
39
20
Ca
ca
lciu
m
40
37
Rb
rub
idiu
m
85
38
Sr
str
on
tiu
m
88
55
Cs
ca
esiu
m
13
3
56
Ba
ba
riu
m
13
7
87
Fr
fra
nciu
m
–
88
Ra
rad
ium
–
5 Bb
oro
n
11
13
Al
alu
min
ium
27
31
Ga
gallium
70
49
In
indium
115
81 Tl
thallium
204
6 Ccarbon
12
14 Si
silicon
28
32
Ge
germanium
73
50
Sntin
119
82
Pb
lead
207
22 Ti
titanium
48
40
Zr
zirconium
91
72
Hf
hafnium
178
104
Rf
rutherfordium
–
23 V
vanadium
51
41
Nb
niobium
93
73
Ta
tantalum
181
105
Db
dubnium
–
24
Cr
chromium
52
42
Mo
molybdenum
96
74
Wtungsten
184
106
Sg
seaborgium
–
25
Mn
manganese
55
43
Tc
technetium
– 75
Re
rhenium
186
107
Bh
bohrium
–
26
Fe
iron
56
44
Ru
ruthenium
101
76
Os
osmium
190
108
Hs
hassium
–
27
Co
cobalt
59
45
Rh
rhodium
103
77
Ir
iridium
192
109
Mt
meitnerium
–
28
Ni
nickel
59
46
Pd
palladium
106
78
Pt
platinum
195
110
Ds
darmstadtium
–
29
Cu
copper
64
47
Ag
silver
108
79
Au
gold
197
111
Rg
roentgenium
–
30
Zn
zinc
65
48
Cd
cadmium
112
80
Hg
mercury
201
112
Cn
copernicium
–
114
Fl
flerovium
–
116
Lv
livermorium
–
7 Nnitrogen
14
15 P
phosphorus
31
33
As
arsenic
75
51
Sb
antimony
122
83 Bi
bismuth
209
8 Ooxygen
16
16 S
sulfur
32
34
Se
selenium
79
52
Te
tellurium
128
84
Po
po
lon
ium
–
9 Fflu
orin
e
19
17
Cl
ch
lorin
e
35
.5
35
Br
bro
min
e
80
53 I
iod
ine
12
7
85
At
asta
tin
e
–
10
Ne
ne
on
20
18
Ar
arg
on
40
36
Kr
kry
pto
n
84
54
Xe
xe
no
n
13
1
86
Rn
rad
on
–
21
Sc
sca
nd
ium
45
39 Y
ytt
riu
m
89
57
–7
1
lan
tha
no
ids
89
–1
03
actin
oid
s
57
La
lan
tha
nu
m
13
9
89
Ac
lan
tha
no
ids
actin
oid
s
Th
e v
olu
me
of
on
e m
ole
of
an
y g
as is 2
4 d
m3 a
t ro
om
te
mp
era
ture
an
d p
ressu
re (
r.t.
p.)
.
actin
ium
–
58
Ce
ce
riu
m
140
90
Th
thorium
232
59
Pr
praseodymium
141
91
Pa
protactinium
231
60
Nd
neodymium
144
92 U
uranium
238
61
Pm
promethium
– 93
Np
neptunium
–
62
Sm
samarium
150
94
Pu
plutonium
–
63
Eu
europium
152
95
Am
americium
–
64
Gd
gadolinium
157
96
Cm
curium
–
65
Tb
terbium
159
97
Bk
berkelium
–
66
Dy
dysprosium
163
98
Cf
californium
–
67
Ho
holmium
165
99
Es
einsteinium
–
68
Er
erbium
167
100
Fm
fermium
–
69
Tm
thulium
169
101
Md
mendelevium
–
70
Yb
ytterbium
173
102
No
nobelium
–
71
Lu
lutetium
175
103
Lr
lawrencium
–
