Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
AS Summer 2026
CHEMISTRY Predicted
Paper 1 Inorganic and Physical Chemistry
Afternoon Time allowed: 1 hour 30 minutes
Materials
For Examiner’s Use
For this paper you must have:
• The Periodic Table/Data Booklet, provided as an insert (enclosed) Question Mark
• a ruler with millimetre measurements
1
• a scientific calculator, which you are expected to use where appropriate.
2
Instructions 3
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 6
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 the end of 8
this book. Write the question number against your answer(s).
• Show all your working. Section B
• Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 80.
Advice
• You are advised to spend 65 minutes on Section A and 25 minutes on Section B.
7404/1
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, 2
Do not write
outside the
box
Section A
Answer all questions in the spaces provided.
0 1 A singly charged ion is accelerated in a TOF mass spectrometer so that it has a kinetic
energy of 9.60 × 10⁻¹⁷ J.
The ion travels 0.600 m along the flight tube and reaches the detector in 1.50 × 10⁻⁵ s.
The kinetic energy of the ion is given by;
1
K.E= 2 mv2
The Avogadro constant, L = 6.022 × 10²³ mol⁻¹
0 1 . 1
Calculate the speed of the ion.
[2 marks]
0 1 . 2
Calculate the mass, in g mol⁻¹, of the ion.
[3 marks]
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, 3
Do not write
outside the
0 1 . 3 State one assumption made about the ions when calculating their mass box
using TOF mass spectrometry.
[1 mark]
0 1 . 4
A gaseous mixture contains argon, chlorine, nitrogen and carbon monoxide.
All ions formed are singly charged.
Which ion reaches the detector first, and explain your answer.
[2 marks]
8
for more papers: tyrionpapers.com
Centre number Candidate number
Surname
Forename(s)
Candidate signatuure
I declare this is my own work.
AS Summer 2026
CHEMISTRY Predicted
Paper 1 Inorganic and Physical Chemistry
Afternoon Time allowed: 1 hour 30 minutes
Materials
For Examiner’s Use
For this paper you must have:
• The Periodic Table/Data Booklet, provided as an insert (enclosed) Question Mark
• a ruler with millimetre measurements
1
• a scientific calculator, which you are expected to use where appropriate.
2
Instructions 3
• Use black ink or black ball-point pen. 4
• Fill in the boxes at the top of this page.
5
• Answer all questions.
• You must answer the questions in the spaces provided. Do not write 6
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 the end of 8
this book. Write the question number against your answer(s).
• Show all your working. Section B
• Do all rough work in this book. Cross through any work you do not want TOTAL
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 80.
Advice
• You are advised to spend 65 minutes on Section A and 25 minutes on Section B.
7404/1
for more papers: tyrionpapers.com
, 2
Do not write
outside the
box
Section A
Answer all questions in the spaces provided.
0 1 A singly charged ion is accelerated in a TOF mass spectrometer so that it has a kinetic
energy of 9.60 × 10⁻¹⁷ J.
The ion travels 0.600 m along the flight tube and reaches the detector in 1.50 × 10⁻⁵ s.
The kinetic energy of the ion is given by;
1
K.E= 2 mv2
The Avogadro constant, L = 6.022 × 10²³ mol⁻¹
0 1 . 1
Calculate the speed of the ion.
[2 marks]
0 1 . 2
Calculate the mass, in g mol⁻¹, of the ion.
[3 marks]
for more papers: tyrionpapers.com
, 3
Do not write
outside the
0 1 . 3 State one assumption made about the ions when calculating their mass box
using TOF mass spectrometry.
[1 mark]
0 1 . 4
A gaseous mixture contains argon, chlorine, nitrogen and carbon monoxide.
All ions formed are singly charged.
Which ion reaches the detector first, and explain your answer.
[2 marks]
8
for more papers: tyrionpapers.com
