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International Chemistry Olympiad

ARBIChO 2026

Scientist working in a laboratory

Join the prestigious Abu Rayhan Biruni International Chemistry Olympiad and showcase your chemistry prowess on a global stage.

November 3–10, 2026
30+ Countries
Karakalpakistan Republic, Uzbekistan
4 Students + 2 Team Leaders
Medals in a 1:2:3 ratio
Ages under 18 Eligible
Competition Structure

Competition Rounds

A comprehensive international chemistry competition designed to challenge and inspire young minds across different levels.

Competition Rounds

1
Practical Examination
Participants will receive a set of experimental tasks to complete.
  • Format: Participants will perform a laboratory experiment.
  • Scoring: The maximum score for this round is 30 points.
  • Duration: 1.5 hours (90 minutes).
2
Theoretical Examination
Students are provided with all necessary assets(scientific calculator, periodic table, pen, paper).
  • Format: Participants will solve 8 written problems covering various areas of chemistry.
  • Scoring: Each problem is worth 10 points, making the total 80 points.
  • Duration: 4 hours (240 minutes).

Scoring System

Evaluation Criteria

Round 1: Practical Examination

  • Participants perform a laboratory experiment.
  • Maximum score: 40 points.
  • Duration: 5 hours (300 minutes).

Round 2: Theoretical Examination

  • Participants complete 8 written tasks.
  • There are total 8 tasks. Each task is worth up to 7.5 points (total: 60 points).
  • Duration: 5 hours (300 minutes).

Overall Scoring

  • Total maximum score: 100 points.
  • Round 1 contributes 40 points.
  • Round 2 contributes 60 points.
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