Chemistry Olympiad Exams

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Local Chemistry Olympiad Exams

Nearly 16,000 U.S. students participate in local Chemistry Olympiad competitions. Exams are administered and coordinated by ACS local sections annually in March. Students are nominated for the U.S. National Chemistry Olympiad competition based on exam scores and teacher recommendations.

National Chemistry Olympiad Exams

The U.S. National Chemistry Olympiad national exam is a 3-part, 4.5 hour exam administered in late April by ACS local sections. Nearly 900 students participate in the competition each year.

Part I Part II Part III
  • Multiple Choice
  • 90-minutes
  • 60 multiple choice questions
  • Covers broad chemistry topics
  • Problem Solving
  • 105 minutes
  • 8 written questions
  • Covers chemical theories and models
  • Lab Practical
  • 90 minutes
  • 2 laboratory practicals
  • Involves problem solving in the laboratory