International Chemistry Olympiad (IChO)

An International Information Centre of the International Chemistry Olympiads is located in Bratislava, Slovakia.
It collates all the information and documentation of the IChOs from the beginning of the Olympiad to the present.


Official Webpage

https://www.iuventa.sk/en/Subpages/ICHO/ICHO.alej


Past IChO tasks

https://www.iuventa.sk/en/Subpages/ICHO/Past-Competition-Problems.alej


Past Preparatory problems

https://www.iuventa.sk/en/Subpages/ICHO/Past-Preparatory-Problems.alej


National Papers from other countries

U.S. National Chemistry Olympiad

U.K. National Chemistry Olympiad

Austrian Chemistry Olympiad

Belarus Chemistry Olympiad

Polish Chemistry Olympiad

Ukrainian Chemistry Olympiad