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Subjects
C
Cambridge
E
Pearson Edexcel
AQA
AQA
OCR
OCR
Competitive
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OCR · AS Level · H033
Chemistry B (Salters)
Exam Guide
H033
CONQUER
Papers
01
Foundations of chemistry
Time
1h 30m
Marks
70
Weight
50%
02
Chemistry in depth
Time
1h 30m
Marks
70
Weight
50%
Specification · Version 2.1 (March 2026) oc
Grade boundaries
H033 · AS Level
Weighted marks
June
Max
A
B
C
D
E
Official source
2026
140
101
86
72
58
44
2025
140
94
79
65
51
37
2024
140
93
79
65
51
38
June
2026
2025
2024
Max
140
140
140
A
101
94
93
B
86
79
79
C
72
65
65
D
58
51
51
E
44
37
38
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Chemistry B (Salters)
AS Level · H033
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