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Chemistry Free Topical Past Papers

IB Higher Level (HL) Chemistry past-paper questions grouped by official syllabus topic. Free archive, no signup. Want step-by-step worked solutions? See Chemistry Topical Solved.

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6 topics covered, mapped to the official IB 2026 syllabus.

Topic Structure 1

Models of the particulate nature of matter

5 subtopics

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Topic Structure 2

Models of bonding and structure

4 subtopics

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Topic Structure 3

Classification of matter

2 subtopics

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Topic Reactivity 1

What drives chemical reactions?

4 subtopics

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Topic Reactivity 2

How much, how fast and how far?

3 subtopics

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Topic Reactivity 3

What are the mechanisms of chemical change?

4 subtopics

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