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Subjects
C
Cambridge
E
Pearson Edexcel
AQA
AQA
OCR
OCR
Competitive
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OCR · A Level · H432
Chemistry A
Exam Guide
H432
CONQUER
Papers
01
Periodic table, elements and physical chemistry
Time
2h 15m
Marks
100
Weight
37%
02
Synthesis and analytical techniques
Time
2h 15m
Marks
100
Weight
37%
03
Unified chemistry
Time
1h 30m
Marks
70
Weight
26%
04
Practical endorsement in chemistry
Time
Course practicals
Marks
—
Weight
Separate
Specification · Version 3.1 (May 2026) ocr.org
Grade boundaries
H432 · A Level
Weighted marks
June
Max
A*
A
B
C
D
E
Official source
2026
270
234
200
164
128
92
56
2025
270
243
213
175
137
99
61
2024
270
243
212
173
134
96
58
June
2026
2025
2024
Max
270
270
270
A*
234
243
243
A
200
213
212
B
164
175
173
C
128
137
134
D
92
99
96
E
56
61
58
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Chemistry A
A Level · H432
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