AQA-7405-1-CHEMISTRY QUESTION PAPER 1-A-LEVEL-INORGANIC AND PHYSICAL CHEMISTRY-10Jun24.
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AQA CHEMISTRY
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AQA CHEMISTRY
AQA-7405-1-CHEMISTRY QUESTION PAPER 1-A-LEVEL-INORGANIC AND PHYSICAL CHEMISTRY-10Jun24.
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 represe...
aqa 7405 1 chemistry question paper 1 a level 2024
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A-level
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CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
B
Monday 10 June 2024 Morning Time allowed: 2 hours
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Materials
For this paper you must have:
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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
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Instructions
• Use black ink or black ball-point pen. 3
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• 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
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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
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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.
IB/M/Jun24/G4006/E9 7405/1
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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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B
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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
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Difference 1
A
Difference 2
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IB/M/Jun24/7405/1
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Tellurium has a relative atomic mass of 127.6
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
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Justification
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0 1 . 3 A sample of tellurium is analysed in a time of flight (TOF) mass spectrometer using
electron impact ionisation. B
Give an equation, including state symbols, for this ionisation.
[1 mark]
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Question 1 continues on the next page
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Turn over ►
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In the TOF mass spectrometer an ion of an isotope of tellurium, with mass number y,
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.
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KE = mv2
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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.
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The Avogadro constant, L = 6.022 × 1023 mol–1
[5 marks]
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Mass g
Mass number y
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