2025/ 2026 A Level June 2024 OCR Chemistry A Paper 3 100% Verified with Correct Questions and Answers

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A-Level Chemistry
OCR-A Scan me for
walkthrough
2024 Predicted Paper
Paper 3
Unified Chemistry


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Date:...............................................................................................

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Rough Grade Boundaries
These do not guarantee you Possible Marks
Question
the same mark in the exam. Marks Gained
1 8
A* - 85% 2 6
A - 75% 3 7
4 26
B - 60%
5 23
C - 50%
D - 40% Total 70
E - 30%




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A LEVEL JUNE 2024 OCR CHEMISTRY A PAPER
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01 This question is about the elements in period 3 of the periodic table.


Na Mg Al Si P S Cl Ar




a) Give the full electronic structure of an atom of phosphorus.
[1 mark]

1s2…………………………………………………………………………………………………………


b)
i) Define the term ‘first ionisation energy’.
[1 mark]

………………………………………………………………………………………………………………

………………………………………………………………………………………………………………


ii) Write the equation for the 1st ionisation energy of the element in
period 3 with the lowest first ionisation energy.
[1 mark]

………………………………………………………………………………………………………………


c) Identify the element whose ion forms a white precipitate with
aqueous silver nitrate.
[1 mark]

………………………………………………………………………………………………………………


d) Identify the element with the smallest atomic radius.
[1 mark]

………………………………………………………………………………………………………………




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e) Explain why the melting point of silicon is 1,414 ˚C, but for argon it
is -189 ˚C.
[3 marks]

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Primrose Kitten – YouTube Tutorials for GCSE and A-Level

A LEVEL JUNE 2024 OCR CHEMISTRY A PAPER
A LEVEL
3.pdfJUNE 2024 OCR CHEMISTRY A PAPER
A LEVEL
3.pdfJUNE 2024 OCR CHEMISTRY A PAPER 3.pdf