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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
Monday 10 June 2024 Morning Time allowed: 2 hours
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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.
*Jun247405101*
Revision303 Revision303
IB/M/Jun24/G4006/E9 7405/1
Revision303
,Revision303 Revision303 Revision303
2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 This question is about atomic structure.
0 1 . 1 In 1897 JJ Thomson discovered the electron. He suggested that atoms were
positively charged spheres with electrons embedded within them.
Figure 1 represents an atom using Thomson’s model.
Figure 1
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Suggest the identity of this atom.
Give two differences between the modern model of an atom and the Thomson model
of an atom.
[3 marks]
Identity
Difference 1
Difference 2
*02*
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IB/M/Jun24/7405/1
,Revision303 Revision303 Revision303
3
Do not write
outside the
0 1 . 2 Tellurium has a relative atomic mass of 127.6 box
Iodine has a relative atomic mass of 126.9
Define relative atomic mass.
Suggest one property of tellurium that justifies its position before iodine in the
modern Periodic Table.
[3 marks]
Definition
Justification
0 1 . 3 A sample of tellurium is analysed in a time of flight (TOF) mass spectrometer using
electron impact ionisation.
Give an equation, including state symbols, for this ionisation.
[1 mark]
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Question 1 continues on the next page
Turn over ►
*03*
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IB/M/Jun24/7405/1
, Revision303 Revision303 Revision303
4
Do not write
outside the
0 1 . 4 In the TOF mass spectrometer an ion of an isotope of tellurium, with mass number y, box
travels along a 1.25 m flight tube with a kinetic energy of 1.88 x 10–12 J
The ion takes 3.00 x 10–7 s to reach the detector.
1
KE = mv2
2
KE = kinetic energy / J
m = mass / kg
v = speed / m s–1
Calculate the mass, in g, of 1 mole of these tellurium ions.
Use your answer to suggest the mass number y of the tellurium isotope.
The Avogadro constant, L = 6.022 × 1023 mol–1
[5 marks]
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Mass g
Mass number y
*04*
Revision303 Revision303 Revision303
IB/M/Jun24/7405/1
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
Monday 10 June 2024 Morning Time allowed: 2 hours
Revision303 Revision303 Revision303
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.
*Jun247405101*
Revision303 Revision303
IB/M/Jun24/G4006/E9 7405/1
Revision303
,Revision303 Revision303 Revision303
2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 This question is about atomic structure.
0 1 . 1 In 1897 JJ Thomson discovered the electron. He suggested that atoms were
positively charged spheres with electrons embedded within them.
Figure 1 represents an atom using Thomson’s model.
Figure 1
Revision303 Revision303 Revision303
Suggest the identity of this atom.
Give two differences between the modern model of an atom and the Thomson model
of an atom.
[3 marks]
Identity
Difference 1
Difference 2
*02*
Revision303 Revision303 Revision303
IB/M/Jun24/7405/1
,Revision303 Revision303 Revision303
3
Do not write
outside the
0 1 . 2 Tellurium has a relative atomic mass of 127.6 box
Iodine has a relative atomic mass of 126.9
Define relative atomic mass.
Suggest one property of tellurium that justifies its position before iodine in the
modern Periodic Table.
[3 marks]
Definition
Justification
0 1 . 3 A sample of tellurium is analysed in a time of flight (TOF) mass spectrometer using
electron impact ionisation.
Give an equation, including state symbols, for this ionisation.
[1 mark]
Revision303 Revision303 Revision303
Question 1 continues on the next page
Turn over ►
*03*
Revision303 Revision303 Revision303
IB/M/Jun24/7405/1
, Revision303 Revision303 Revision303
4
Do not write
outside the
0 1 . 4 In the TOF mass spectrometer an ion of an isotope of tellurium, with mass number y, box
travels along a 1.25 m flight tube with a kinetic energy of 1.88 x 10–12 J
The ion takes 3.00 x 10–7 s to reach the detector.
1
KE = mv2
2
KE = kinetic energy / J
m = mass / kg
v = speed / m s–1
Calculate the mass, in g, of 1 mole of these tellurium ions.
Use your answer to suggest the mass number y of the tellurium isotope.
The Avogadro constant, L = 6.022 × 1023 mol–1
[5 marks]
Revision303 Revision303 Revision303
Mass g
Mass number y
*04*
Revision303 Revision303 Revision303
IB/M/Jun24/7405/1
