A level
AQA
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
AS
CHEMISTRY
Paper 1 Inorganic and Physical
Chemistry
Tuesday 14th May 2024 Morning Time allowed: 1 hour 30 minutes
Materials
For this paper you must have: For Examiner’s Use
the Periodic Table/Data Sheet, 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 3
Use black ink or black ball-point pen.
4
Fill in the boxes at the top of this page.
Answer all questions. 5
You must answer the questions in the spaces provided. Do not 6
write outside the box around each page or on blank pages. 7
If you need extra space for your answer(s), use the lined pages at
8
the end of this book. Write the question number against your
answer(s). 9
All working must be shown. Section
Do all rough work in this book. Cross through any work B
you do not want to be marked. TOTAL
Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 80.
Advice
You are advised to spend about 65 minutes on Section A and 25 minutes on Section B.
, Section A
Answer all questions in this
section.
0 1 A student does a series of reactions with aqueous solutions of some
potassium halides (P, Q and R) of equal concentration. Each solution
contains a different halide ion (chloride, bromide or iodide).
The student adds 3 drops of bromine water to 3 drops of each aqueous
solution of potassium halide. The student also adds 3 drops of the
bromine water to
3 drops of water.
Table 1 shows the student’s observations.
Table 1
Observation when 3 drops
of bromine water are added
Solution P Orange solution
Solution Q Brown solution
Solution R Orange solution
Water Orange solution
0 1
.1 Identify the halide ion present in Q.
Give the ionic equation for the reaction that occurs when bromine water is
added to Q.
[2 marks]
Halide ion in Q
Ionic equation
,0 1 .2 Explain, in terms of oxidizing ability, why the observations from these
reactions do not allow the student to identify the halide ion present in
P and the halide ion present in R.
[2 marks]
0 1 .3 The student does a second experiment to determine the halide ion in each of P and
R.
The student adds a few drops of aqueous silver nitrate
solution to 2 cm3 of each potassium halide solution.
Table 2 shows the student’s observations.
Table 2
Student’s Observation
P Precipitate formed
R Precipitate formed
Describe a further chemical test that the student can complete on the
precipitates formed to identify the halide ion present in P and the
halide ion present in R.
Describe how the observations from this test can be used to identify
the halide ion present in P and the halide ion present in R.
[3 marks]
7
Turn over for the next question
, Turn over ►
AQA
Please write clearly in block capitals.
Centre Candidate
number number
Surname
Forename(s)
Candidate ure
signat
AS
CHEMISTRY
Paper 1 Inorganic and Physical
Chemistry
Tuesday 14th May 2024 Morning Time allowed: 1 hour 30 minutes
Materials
For this paper you must have: For Examiner’s Use
the Periodic Table/Data Sheet, 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 3
Use black ink or black ball-point pen.
4
Fill in the boxes at the top of this page.
Answer all questions. 5
You must answer the questions in the spaces provided. Do not 6
write outside the box around each page or on blank pages. 7
If you need extra space for your answer(s), use the lined pages at
8
the end of this book. Write the question number against your
answer(s). 9
All working must be shown. Section
Do all rough work in this book. Cross through any work B
you do not want to be marked. TOTAL
Information
The marks for questions are shown in brackets.
The maximum mark for this paper is 80.
Advice
You are advised to spend about 65 minutes on Section A and 25 minutes on Section B.
, Section A
Answer all questions in this
section.
0 1 A student does a series of reactions with aqueous solutions of some
potassium halides (P, Q and R) of equal concentration. Each solution
contains a different halide ion (chloride, bromide or iodide).
The student adds 3 drops of bromine water to 3 drops of each aqueous
solution of potassium halide. The student also adds 3 drops of the
bromine water to
3 drops of water.
Table 1 shows the student’s observations.
Table 1
Observation when 3 drops
of bromine water are added
Solution P Orange solution
Solution Q Brown solution
Solution R Orange solution
Water Orange solution
0 1
.1 Identify the halide ion present in Q.
Give the ionic equation for the reaction that occurs when bromine water is
added to Q.
[2 marks]
Halide ion in Q
Ionic equation
,0 1 .2 Explain, in terms of oxidizing ability, why the observations from these
reactions do not allow the student to identify the halide ion present in
P and the halide ion present in R.
[2 marks]
0 1 .3 The student does a second experiment to determine the halide ion in each of P and
R.
The student adds a few drops of aqueous silver nitrate
solution to 2 cm3 of each potassium halide solution.
Table 2 shows the student’s observations.
Table 2
Student’s Observation
P Precipitate formed
R Precipitate formed
Describe a further chemical test that the student can complete on the
precipitates formed to identify the halide ion present in P and the
halide ion present in R.
Describe how the observations from this test can be used to identify
the halide ion present in P and the halide ion present in R.
[3 marks]
7
Turn over for the next question
, Turn over ►
