IChO

International Chemistry Olympiad

The International Chemistry Olympiad (IChO) is an annual academic competition for high school students. It is one of the International Science Olympiads, testing advanced chemistry knowledge and laboratory skills.

UnknownIChO 56 Prep Problems Unknown
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2025IChO 56 Prep Problems 2025
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2025IChO Practical Exam 2025
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2025IChO Practical Exam Official 2025
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2025IChO Practical Prep 2025
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2025IChO Practical Solutions Official 2025
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2025IChO Prep Solutions Theory and Practical 2025
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2025IChO Theory Exam Official 2025
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2025IChO Theory Official 2025
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2025IChO Theory Prep 2025
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2025IChO Theory Solutions Official 2025
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2023IChO Prep Problems Swiss compressed 2023
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2022IChO China 2022
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2022IChO Previous Prep Problems Nankai China 2022
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2021IChO Prep Problems Kansai Area Japan Version 2.5 2021
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2021IChO Problems 53rd Japan compressed 2021
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2020IChO Prep Problems Istanbul Turkey 2020
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2020IChO Problems Istanbul Turkey 2020
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2019IChO Prep Problems Paris France 2019
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2019IChO Theory and Practical 2019
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2018IChO Prep Problems 2018
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2018IChO Problems Theory and Practical Slovakia Czech 2018
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