Pearson Edexcel International GCSE (9–1) Thursday 14 January 2021

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Other names
Pearson Edexcel
International GCSE (9¨C1)
Centre Number
Candidate Number
Thursday 14 January 2021
Morning (Time: 1 hour 15 minutes)
Paper Reference 4CH1/2C
Chemistry
Unit: 4CH1
Paper 2C
You must have:
Calculator, ruler
Total Marks
Instructions
black ink or ball?point pen.
? Use
Fill in the boxes at the top of this page with your name,
? centre
number and candidate number.
Answer
? Answer allthequestions.
in the spaces provided
? ¨C there may bequestions
more space than you need.
Some questions must be answered with a cross in a box . If you change your
? mind
about an answer, put a line through the box
and then mark your new
answer with a cross
.
Information
total mark for this paper is 70.
? The
The
for each question are shown in brackets
? ¨C usemarks
this as a guide as to how much time to spend on each question.
Advice
each question carefully before you start to answer it.
? Read
to answer every question.
? Try
Check
? your answers if you have time at the end.
Turn over
P67081A
?2021 Pearson Education Ltd.
1/1/1/1/
*P67081A0124*
2
40
Ca
39
K
88
Sr
85
Rb
137
Ba
133
Cs
[226]
Ra
[223]
Fr
*P67081A0224*
88
radium
89
actinium
[227]
Ac*
57
lanthanum
139
La*
39
yttrium
89
Y
21
scandium
45
Sc
name
104
rutherfordium
[261]
Rf
72
hafnium
178
Hf
40
zirconium
91
Zr
22
titanium
48
Ti
105
dubnium
[262]
Db
73
tantalum
181
Ta
41
niobium
93
Nb
23
vanadium
51
V
106
seaborgium
[266]
Sg
74
tungsten
184
W
42
molybdenum
96
Mo
24
chromium
52
Cr
atomic (proton) number
relative atomic mass
atomic symbol
Key
107
bohrium
[264]
Bh
75
rhenium
186
Re
43
technetium
[98]
Tc
25
manganese
55
Mn
iron
108
hassium
[277]
Hs
76
osmium
190
Os
44
ruthenium
101
Ru
26
56
Fe
1
hydrogen
1
H
109
meitnerium
[268]
Mt
77
iridium
192
Ir
45
rhodium
103
Rh
27
cobalt
59
Co
110
darmstadtium
[271]
Ds
78
platinum
195
Pt
46
palladium
106
Pd
28
nickel
59
Ni
gold
111
roentgenium
[272]
Rg
79
197
Au
47
silver
108
Ag
29
copper
63.5
Cu
zinc
81
thallium
204
Tl
49
indium
115
In
31
gallium
70
Ga
tin
lead
82
207
Pb
50
119
Sn
32
germanium
73
Ge
14
silicon
28
Si
6
carbon
12
C
4
83
bismuth
209
Bi
51
antimony
122
Sb
33
arsenic
75
As
15
phosphorus
31
P
7
nitrogen
14
N
5
84
polonium
[209]
Po
52
tellurium
128
Te
34
selenium
79
Se
16
sulfur
32
S
8
oxygen
16
O
6
85
astatine
[210]
At
53
iodine
127
I
35
bromine
80
Br
17
chlorine
35.5
Cl
9
fluorine
19
F
7
The relative atomic masses of copper and chlorine have not been rounded to the nearest whole number.
0
86
radon
[222]
Rn
54
xenon
131
Xe
36
krypton
84
Kr
18
argon
40
Ar
10
neon
20
Ne
2
helium
4
He
Elements with atomic numbers 112¨C116 have been reported but not fully
authenticated
80
mercury
201
Hg
48
cadmium
112
Cd
30
65
Zn
13
aluminium
27
Al
5
boron
11
B
3
* The lanthanoids (atomic numbers 58¨C71) and the actinoids (atomic numbers 90¨C103) have been omitted.
87
francium
56
barium
55
caesium
38
strontium
37
rubidium
20
calcium
19
potassium
12
magnesium
11
sodium
4
24
Mg
3
23
Na
9
Be
beryllium
2
lithium
7
Li
1
The Periodic Table of the Elements
BLANK PAGE
*P67081A0324*
3
Turn over
Answer ALL questions. Write your answers in the spaces provided.
1 The diagram shows an atom of an element.
Y
++
+
(a) (i) What is the name of the particle labelled Y?
(1)
A electron
B ion
C neutron
D proton
(ii) Give the mass number of this atom.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(iii) Name this element.
Use the Periodic Table on page 2 to help you.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) There are two isotopes of this element.
Give one way, in terms of sub-atomic particles, that these isotopes are the same
and one way that they are different.
(2)
same .. ................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
different .. ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 1 = 5 marks)
4
*P67081A0424*
2 This question is about gases.
(a) The box gives the names of some gases.
argon?????carbon dioxide?????hydrogen?????nitrogen?????oxygen
Use gases from the box to answer these questions.
Each gas may be used once, more than once or not at all.
(i) Name the most abundant gas in the Earth¡¯s atmosphere.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(ii) Name the gas that is a compound.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(iii) Name the least reactive of the gases.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(iv) Name the gas formed by the complete combustion of hydrocarbons.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) Describe the test for hydrogen gas.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........................................................................................................................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 2 = 5 marks)
*P67081A0524*
5
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