Chemistry (5070) grade thresholds

Cambridge O Level — official minimum raw marks per grade.

June 2025

Overall thresholds (by syllabus option)

Option	Components	Max	A*	A	B	C	D	E
AX	11, 21, 31	200	169	139	105	72	60	48
AY	12, 22, 32	200	170	140	105	71	59	47
BX	11, 21, 41	200	169	138	105	72	59	47

Per-component thresholds

Component	Max mark	A	B	C	D	E
11	40	29	23	18	16	14
12	40	29	23	17	15	13
21	80	54	39	23	18	13
22	80	54	39	23	18	13
31	40	28	22	16	13	11
32	40	29	23	17	14	11
41	40	27	22	16	13	10
42	40	28	22	17	13	10

Source: official CAIE grade-threshold table (June 2025)

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Every Chemistry past-paper question with a step-by-step worked solution, and AI marking against the official mark scheme — type your answer or upload a photo of your working, and see how your raw marks stack up against these thresholds.

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Grade A* is not awarded on individual components. “–” means the grade is not available for that row (e.g. IGCSE core tier caps at grade C). Independent reference — not affiliated with CAIE.

Component	Max mark	A	B	C	D	E
11	40	29	23	18	16	14
12	40	29	23	17	15	13
21	80	54	39	23	18	13
22	80	54	39	23	18	13
31	40	28	22	16	13	11
32	40	29	23	17	14	11
41	40	27	22	16	13	10
42	40	28	22	17	13	10

Component	Max mark	A	B	C	D	E
11	40	29	23	18	16	14
12	40	29	23	17	15	13
21	80	54	39	23	18	13
22	80	54	39	23	18	13
31	40	28	22	16	13	11
32	40	29	23	17	14	11
41	40	27	22	16	13	10
42	40	28	22	17	13	10

Component	Max mark	A	B	C	D	E
11	40	29	23	18	16	14
12	40	29	23	17	15	13
21	80	54	39	23	18	13
22	80	54	39	23	18	13
31	40	28	22	16	13	11
32	40	29	23	17	14	11
41	40	27	22	16	13	10
42	40	28	22	17	13	10