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Candidate
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I declare this is my own work.
AQA A-level
CHEMISTRY T
2025 PREICTED
R PAPER
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
10
want to be marked.
TOTAL
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.
www.tyrions.com
7405/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 This question is about transition metals.
0 1 . 1 State the meaning of the term ligands
[1 mark]
[Ni (CN)4 ]2– is a nickel complex that includes CN4 molecules.
0 1 . 2 The form of a molecule [Ni (CN)4 ]2– can be predicted using the electron pair repulsion
theory.
Draw the shape of a [Ni (CN)4 ]2– molecule.
Name the shape.
[2 marks]
Shape
Name of shape
0 1 . 3 What is the coordination number of nickel in [Ni (CN)4 ]2–.
[1 mark]
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, 3
Do not write
outside the
box
The compound [CoCl2(NH3)2] contains ammonia molecules.
0 1 . 4 Determine the oxidation state of cobalt in [CoCl2(NH3)2].
[1 mark]
0 1 . 5 Name the type of bond between N and H in ammonia.
[1 mark]
0 1 . 6 A complex ion that exhibits isomerism is present in the compound [CoCl2(NH3)2].
Draw the two isomers of the complex ion.
Mention the type of isomerism shown.
[3 marks]
Isomer 1 Isomer 2
Type of isomerism
0 1 . 7 State the formula of the complex ion present in Tollens’ reagent
[1 mark]
10
Turn over ►
www.tyrions.com
Centre number Candidate number
Surname
Forename(s)
Candidate
Signature
I declare this is my own work.
AQA A-level
CHEMISTRY T
2025 PREICTED
R PAPER
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
10
want to be marked.
TOTAL
Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.
www.tyrions.com
7405/1
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 This question is about transition metals.
0 1 . 1 State the meaning of the term ligands
[1 mark]
[Ni (CN)4 ]2– is a nickel complex that includes CN4 molecules.
0 1 . 2 The form of a molecule [Ni (CN)4 ]2– can be predicted using the electron pair repulsion
theory.
Draw the shape of a [Ni (CN)4 ]2– molecule.
Name the shape.
[2 marks]
Shape
Name of shape
0 1 . 3 What is the coordination number of nickel in [Ni (CN)4 ]2–.
[1 mark]
www.tyrions.com
, 3
Do not write
outside the
box
The compound [CoCl2(NH3)2] contains ammonia molecules.
0 1 . 4 Determine the oxidation state of cobalt in [CoCl2(NH3)2].
[1 mark]
0 1 . 5 Name the type of bond between N and H in ammonia.
[1 mark]
0 1 . 6 A complex ion that exhibits isomerism is present in the compound [CoCl2(NH3)2].
Draw the two isomers of the complex ion.
Mention the type of isomerism shown.
[3 marks]
Isomer 1 Isomer 2
Type of isomerism
0 1 . 7 State the formula of the complex ion present in Tollens’ reagent
[1 mark]
10
Turn over ►
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