OCR A Level Chemistry H432/03 – Unified Chemistry (2025 Exam Paper + Merged Mark Scheme)

A LEVEL CHEMISTRY A H432/03 UNIFIED
CHEMISTRY ACTUAL 2025 PAPER
MERGED WITH MARK SCHEME




vincent marekia
[COMPANY NAME] [Company address]

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Oxford Cambridge and RSA
*1849162322*




Friday 20 June 2025 – Morning
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.

INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 20 pages.

ADVICE
• Read each question carefully before you start your answer.

© OCR 2025 [601/5255/2 ] DC (WW/JG) 345058/3
OCR is an exempt Charity
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