Baltic Chemistry Olympiad (BChO) 
¶
Overview¶
The Baltic Chemistry Olympiad (BChO) is an annual regional chemistry competition for top secondary-school students from the three Baltic states: Estonia, Latvia, and Lithuania. Established in 1993 with the inaugural edition held in Riga, Latvia, the competition rotates among the three countries and serves as both a standalone academic contest and a preparatory stepping stone toward the International Chemistry Olympiad (IChO).
The BChO is organized through a collaboration of national chemistry olympiad committees. In Estonia, it is coordinated by the University of Tartu's Science Education Centre (teaduskool); in Latvia, by the National Centre for Education with support from institutions like Riga Technical University and the pharmaceutical company Grindeks; in Lithuania, by the national chemistry olympiad committee associated with Vilnius University.
With only around 20 participants per edition, the BChO is one of the smallest international chemistry olympiads, creating an intimate, collegial atmosphere. It has been held annually since 1993, with two interruptions during the COVID-19 pandemic (2020β2021).
Key Websites¶
- Official BChO website β University of Tartu
- University of Tartu Science Education Centre
- BChO YouTube channel
Competition Format¶
- Theoretical Examination
- Duration: 5 hours
- Number of problems: 6 theoretical problems
- Topics: Organic synthesis, thermodynamics, kinetics, inorganic chemistry, coordination chemistry, physical chemistry, and analytical chemistry β aligned with the IChO syllabus
- Scoring: Problems carry percentage weights (e.g., "Problem 1: Iron complexes, 9%"). Exact maximum point totals vary by edition.
- Practical Examination
- Duration: 4 hours
- Number of tasks: Typically 1β2 laboratory tasks
- Assessment: Based on experimental technique, accuracy of results, and data analysis
- Examples: Titration with multiple colour changes, copper electroplating, quantitative analysis
Language¶
The exam is conducted in English. In the early editions (1990s), Russian was used as the common language, reflecting the Soviet-era academic legacy. The transition to English occurred gradually in the early-to-mid 2000s.
Medal System¶
The BChO uses a diploma system rather than the traditional gold/silver/bronze medal structure:
| Diploma | Equivalent |
|---|---|
| I degree diploma | Gold |
| II degree diploma | Silver |
| III degree diploma | Bronze |
Exact percentage cutoffs are not publicly documented. Awards are determined by a tri-national jury of mentors from all three countries. Top finishers may receive special acknowledgement.
Team Size¶
- Approximately 6β8 students per country, with the host country sometimes having a slightly larger team
- Total participants: ~20 per edition
Selection Process¶
Participants are selected from their respective national chemistry olympiads:
- Estonia: Organized by the University of Tartu's teaduskool. For the 30th BChO, Estonia introduced a multi-stage filtering system rather than simply taking top national finalists.
- Latvia: Students progress through school-level, regional, and national tiers. The top performers form the BChO team.
- Lithuania: Selection through the Lithuanian national chemistry olympiad system.
History¶
The BChO was founded in 1993, two years after the independence of Baltic states from the Soviet Union (1991). It has grown into a well-established regional competition with a consistent hosting rotation.
- 1993: First BChO held in Riga, shortly after Baltic states regained independence.
- 2002: First edition in a smaller city (Palanga) rather than a capital or university city.
- 2015: First edition in Daugavpils, Latvia's second-largest city.
- 2020β2021: Competition suspended due to COVID-19 pandemic.
- 2023: Held in Dobele, a small town in Latvia, at Dobele State Gymnasium.
- 2024 (30th anniversary): Milestone edition in Tartu. A comprehensive archive of 180+ theoretical problems from BChO 1β30 was compiled and published. First use of Moodle for exams. Ukrainian guest team participated for the first time. Problems were broadcast via Discord to reach over 6,000 chemistry enthusiasts.
Relationship to IChO¶
The BChO is firmly embedded in the olympiad ecosystem as a regional preparatory competition for the IChO:
- Held in spring (typically AprilβMay), a few months before the IChO (July), giving national teams valuable international competition experience.
- BChO results directly influence IChO team selection in some countries. In Estonia, BChO results account for 10% of the criteria used to select the 4-person IChO team.
- The top performers at the BChO are typically among those who go on to represent their countries at the IChO.
- Problem difficulty is calibrated to be challenging but generally below full IChO level, serving as a useful benchmark.
Fun Facts¶
- Intimate scale: With only ~20 participants total, the BChO is one of the smallest international chemistry olympiads, fostering close mentorship and collegiality.
- Linguistic evolution: Founded in Russian (the Soviet-era academic lingua franca) and evolved to English, mirroring the region's broader geopolitical reorientation.
- Cultural program: Includes cultural activities (e.g., museum scavenger hunts) alongside the exams, fostering personal connections among young Baltic chemists.
- Industry sponsorship: In Latvia, the pharmaceutical company Grindeks has been a notable sponsor, connecting the competition to the national chemistry industry.
- No permanent organizational body: Each host country organizes its edition independently, coordinated through informal inter-country agreements among chemistry educators.
Past Exams Archive¶
Since 2006¶
| Year | Theory | Solution | Practical |
|---|---|---|---|
| 2026 | EN | ||
| 2025 | EN | EN | |
| 2024 | EN | EN | |
| 2023 | EN ET | EN | EN ET |
| 2022 | EN ET | EN | EN ET |
| 2019 | EN ET | EN | EN ET |
| 2018 | EN RU ET | EN | EN RU ET |
| 2017 | EN ET | EN | ET |
| 2016 | EN ET | EN | EN |
| 2015 | EN | EN | EN |
| 2014 | EN | EN | |
| 2013 | EN | EN | |
| 2012 | EN ET | EN | |
| 2011 | EN RU ET | EN | EN RU ET |
| 2010 | EN RU ET | EN | 1-EN 2-EN 1-RU 1-ET 2-ET |
| 2009 | EN RU ET | EN | EN ET |
| 2008 | EN RU ET | EN | EN ET |
| 2007 | EN RU ET | EN | EN |
| 2006 | EN RU ET | EN | EN RU |
Before 2005 (No practical documents found)¶
| Year | Theoretical EN | Theoretical RU | Theoretical ET | Solution |
|---|---|---|---|---|
| 2005 | Link | Link | Link | |
| 2004 | Link | Link | Link | Link |
| 2003 | Link | Link | Link | Link |
| 2002 | Link | Link | Link | |
| 2001 | Link | Link | Link | Link |
| 2000 | Link | Link | Link | Link |
| 1999 | Link | Link | Link | Link |
| 1998 | Link | Link | Link | Link |
| 1997 | Link | Link | Link | Link |
| 1996 | Link | Link | Link | Link |
| 1995 | Link | Link | Link | |
| 1994 | Link | Link | Link | Link |
| 1993 | Link | Link | Link | Link |
A comprehensive compilation of BChO 1β30 (1993β2024) is available as a single PDF from the teaduskool official site.