AQA A LEVEL
CHEMISTRY PAPER 1
7405-1 2021 QUESTION
PAPER QP
,AQA A LEVEL CHEMISTRY PAPER 1 7405-1 2021 QUESTION PAPER QP
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
Time allowed: 2 hours
Materials
For this paper you must have: For Examiner’s Use
the Periodic Table/Data Booklet, provided as an insert (enclosed)
a ruler with millimetre measurements Question Mark
a scientific calculator, which you are expected to use where appropriate. 1
2
Instructions
Use black ink or black ball-point pen. 3
Fill in the boxes at the top of this page. 4
Answer all questions. 5
You must answer the questions in the spaces provided. Do not write outside
6
the box around each page or on blank pages.
If you need extra space for your answer(s), use the lined pages at the end of 7
this book. Write the question number against your answer(s). 8
All working must be shown. 9
Do all rough work in this book. Cross through any work you do not
want to be marked. TOTAL
Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
*JUN2174051D0
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7405/1
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i
a Do not write
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.
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Answer all questions in the spaces provided. box
o
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0 1 This question- is about enthalpy changes for calcium chloride and
magnesium chloride.
T
h
0 1 . 1 State the meaning
e of the term enthalpy change.
[1 mark]
M
a
r
k
e
t
p
l
Figure 1 shows
a
an incomplete Born–Haber cycle for the formation of calcium chloride.
c
e Figure 1
t
o
B
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0 1 . 2 Complete Figure
e 1 by writing the formulas, including state symbols, of the
r
appropriate species on each of the three blank lines.
i
a [3 marks]
l
*02*
IB/M/Jun21/7405/1
, 3
Do not write
outside the
0 1 . 3 Table 1 shows some enthalpy data. box
Table 1
Enthalpy change
/ kJ mol–1
Enthalpy of formation of calcium chloride –795
Enthalpy of atomisation of calcium +193
First ionisation energy of calcium +590
Second ionisation energy of calcium +1150
Enthalpy of atomisation of chlorine +121
Electron affinity of chlorine –364
Use Figure 1 and the data in Table 1 to calculate a value for the
enthalpy of lattice dissociation of calcium chloride.
[2 marks]
Enthalpy of lattice dissociation kJ mol–1
Question 1 continues on the next page
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CHEMISTRY PAPER 1
7405-1 2021 QUESTION
PAPER QP
,AQA A LEVEL CHEMISTRY PAPER 1 7405-1 2021 QUESTION PAPER QP
Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
Time allowed: 2 hours
Materials
For this paper you must have: For Examiner’s Use
the Periodic Table/Data Booklet, provided as an insert (enclosed)
a ruler with millimetre measurements Question Mark
a scientific calculator, which you are expected to use where appropriate. 1
2
Instructions
Use black ink or black ball-point pen. 3
Fill in the boxes at the top of this page. 4
Answer all questions. 5
You must answer the questions in the spaces provided. Do not write outside
6
the box around each page or on blank pages.
If you need extra space for your answer(s), use the lined pages at the end of 7
this book. Write the question number against your answer(s). 8
All working must be shown. 9
Do all rough work in this book. Cross through any work you do not
want to be marked. TOTAL
Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 105.
*JUN2174051D0
ow1
nloa*
ded
7405/1
, S
t
u
v
2
i
a Do not write
outside the
.
c
Answer all questions in the spaces provided. box
o
m
0 1 This question- is about enthalpy changes for calcium chloride and
magnesium chloride.
T
h
0 1 . 1 State the meaning
e of the term enthalpy change.
[1 mark]
M
a
r
k
e
t
p
l
Figure 1 shows
a
an incomplete Born–Haber cycle for the formation of calcium chloride.
c
e Figure 1
t
o
B
u
y
a
n
d
S
e
l
l
y
o
u
r
S
t
u
d
y
M
a
t
0 1 . 2 Complete Figure
e 1 by writing the formulas, including state symbols, of the
r
appropriate species on each of the three blank lines.
i
a [3 marks]
l
*02*
IB/M/Jun21/7405/1
, 3
Do not write
outside the
0 1 . 3 Table 1 shows some enthalpy data. box
Table 1
Enthalpy change
/ kJ mol–1
Enthalpy of formation of calcium chloride –795
Enthalpy of atomisation of calcium +193
First ionisation energy of calcium +590
Second ionisation energy of calcium +1150
Enthalpy of atomisation of chlorine +121
Electron affinity of chlorine –364
Use Figure 1 and the data in Table 1 to calculate a value for the
enthalpy of lattice dissociation of calcium chloride.
[2 marks]
Enthalpy of lattice dissociation kJ mol–1
Question 1 continues on the next page
Turn over ►
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