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2024 AQA A-Level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Verified Question Paper and Marking Scheme Attached June 2024 $7.99
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2024 AQA A-Level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Verified Question Paper and Marking Scheme Attached June 2024
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2024 AQA A-Level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Verified Question Paper and Marking Scheme Attached June 2024 Monday 10 June 2024 Morning Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an ins...

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  • February 4, 2025
  • 74
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • 2024 aqa a level chemistry 74051 paper 1 inorgan

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  • 2024 AQA A-Level CHEMISTRY 7405
  • 2024 AQA A-Level CHEMISTRY 7405

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2024 AQA A-Level CHEMISTRY 7405/1 Paper 1
Inorganic and Physical Chemistry
Verified Question Paper and Marking Scheme Attached
June 2024

Monday 10 June 2024 Morning 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
TOTAL
want to be marked.

Information
• The marks for questions are shown in brackets.
• The maximum mark for this paper is 105.

, 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




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




IB/M/Jun24/7405/1

, 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]




Question 1 continues on the next page




Turn over ►


IB/M/Jun24/7405/1

, 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.

KE = 1 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]




Mass g

Mass number y




IB/M/Jun24/7405/1

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