Chemistry high school exams

Chemistry high school teachers, this is an opportunity to test your student's chemistry knowledge with students in accredited high schools around the world!

The Chem 13 News and Avogadro Exam Contests are challenging online exams written by more than 6,900 Grade 11 and 12 Chemistry high school students every May. The exam contests consist of 40 multiple-choice questions, written in a 75-minute exam period.

Chemistry high school exams are only available for purchase by a teacher at an accredited high school. Tutoring schools are not eligible.

All participants are eligible for a Certificate of Participation. Top performing students from Canada and the United States receive an award from the University of Waterloo.

Chem 13 News Exam - May 2025

The Chem 13 News Exam is designed for Grade 12 high school chemistry students in their second high school chemistry course. Topics include organic chemistry, equilibria, kinetics, oxidation-reduction, bonding, structure, reactions, solutions, and gases.

Avogadro Exam - May 2025

The Avogadro Exam is designed for Grade 11 high school students in their first high school chemistry course. Topics include structure of matter, bonding, reactions, solutions, and gases. The test includes a few probing and demanding questions on some of the main topics of high school chemistry.

Exam results

The Chem 13 News Exam and Avogadro Exam results are available online to teachers by visiting SciOn. Teachers can configure distinctions to see how their own students scored on the exam, as well as by individual question, compared to students who have written the exam in their school, country, and around the world! Visit the Chem 13 News and Avogadro exam results page for a summary of the most recent results. On this page, you will also find information on awards for top-performing students and online participant certificates available to be generated by each school.

Please note: Exam results are not used as a criterion for admission to university studies. We do not show or give results to any admissions committee.


If you have any questions, please email Barbara Levai-Sharpe (