Dr. Chen is proud to have coached four Campers in USNCO 2025!

Decoding of Chemistry Olympiad

Decoding of Chemistry OlympiadDecoding of Chemistry OlympiadDecoding of Chemistry Olympiad

Decoding of Chemistry Olympiad

Decoding of Chemistry OlympiadDecoding of Chemistry OlympiadDecoding of Chemistry Olympiad
  • Home
  • About
  • USNCO
    • General Overview
    • FAQs
    • Learning Objectives
    • DCC
    • Annotated Solutions
    • Misconception
    • Laboratory
    • Study Camp
  • Classes
    • Introduction
    • Registration
    • Placement
    • Testimony
    • National Preps
    • Open Classes
    • Lecture Notes
  • Resources
    • Textbooks
    • IChO
    • CChO
    • Mendeleev
    • VChO
    • WUCT&BCT
    • Other Sites
  • Consultation
    • Newsletters
    • Email
    • Discord
    • WeChat 微信
  • More
    • Home
    • About
    • USNCO
      • General Overview
      • FAQs
      • Learning Objectives
      • DCC
      • Annotated Solutions
      • Misconception
      • Laboratory
      • Study Camp
    • Classes
      • Introduction
      • Registration
      • Placement
      • Testimony
      • National Preps
      • Open Classes
      • Lecture Notes
    • Resources
      • Textbooks
      • IChO
      • CChO
      • Mendeleev
      • VChO
      • WUCT&BCT
      • Other Sites
    • Consultation
      • Newsletters
      • Email
      • Discord
      • WeChat 微信
  • Home
  • About
  • USNCO
    • General Overview
    • FAQs
    • Learning Objectives
    • DCC
    • Annotated Solutions
    • Misconception
    • Laboratory
    • Study Camp
  • Classes
    • Introduction
    • Registration
    • Placement
    • Testimony
    • National Preps
    • Open Classes
    • Lecture Notes
  • Resources
    • Textbooks
    • IChO
    • CChO
    • Mendeleev
    • VChO
    • WUCT&BCT
    • Other Sites
  • Consultation
    • Newsletters
    • Email
    • Discord
    • WeChat 微信

Other Sites for Chemistry Olympiad

Chemistry Olympiads Discord Server (CODS)

Anugrah Chemparathy's Competition Chemistry page

Anugrah Chemparathy's Competition Chemistry page

The Chemistry Olympiads Discord Server (CODS) is a community consisting of self-motivated students who enjoy competitive chemistry, introducing new students all around the world to Chemistry Olympiad.

Find out more

Anugrah Chemparathy's Competition Chemistry page

Anugrah Chemparathy's Competition Chemistry page

Anugrah Chemparathy's Competition Chemistry page

Top row (from left): Anugrah Chemparathy, Joseph Houck, Alex Li
Middle row (from left): Ananthan Sad

IChO gold medalist in 2020, current MIT undergraduate, who translated a lot Russian chemistry competition problems, compiled several mock tests for USNCO and camp selection, and wrote original problems as well.

Find out more

Edward Jin's Chemistry Competitions page

Anugrah Chemparathy's Competition Chemistry page

Edward Jin's Chemistry Competitions page

IChO gold medalist in 2019, current MIT undergraduate, who translated a lot Russian chemistry competition problems, compiled several mock tests for USNCO and camp selection, and wrote original problems as well.

Find out more

USNCO Quizzes by Andrew Ni

Washington University Chemistry Tournament

Edward Jin's Chemistry Competitions page

By reorganizing past exam problems by topic, this site aims to streamline the studying process, providing a convenient (and hopefully enjoyable) USNCO practice experience.

Find out more

MasterOrganicChemistry.com

Washington University Chemistry Tournament

Washington University Chemistry Tournament

A very useful and beautiful website for organic chemistry with a bunch of free stuff and more paid ones. 

Find out more

Washington University Chemistry Tournament

Washington University Chemistry Tournament

Washington University Chemistry Tournament

to be added



Find out more

Berkeley Chemistry Tournament

Berkeley Chemistry Tournament

Berkeley Chemistry Tournament

to be added



Find out more

Baltic Chemistry Olympiad

Berkeley Chemistry Tournament

Berkeley Chemistry Tournament

to be added



Find out more

reserved for you!

Berkeley Chemistry Tournament

reserved for you!

to be added



Find out more

Copyright © 2018-2025 Decoding of Chemistry Olympiad - All Rights Reserved.

Powered by

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

DeclineAccept

Interested in Chemistry Olympiad Classes for 25–26?

Choose the path that fits you best:

  1. Self-Study + Diagnostic
    Study Honors or AP Chemistry on your own, then take Dr. Chen’s diagnostic tests to determine fall placement. Recommended textbooks
  2. Summer Class with Dr. Chen
    Take an intensive AP Chemistry+ or Organic Chemistry Class this summer with Dr. Chen to prepare for Level 2, 3, or 4 Olympiad training in the fall.
  3. Start Now – Self-Paced
    Prefer to begin right away? Purchase recordings and materials for Level 2, 3, or 4 from 2024-25 and start learning at your own pace!

Sign up for Dr. Chen's Summer Class for AP Chemistry+ or Organic Chemistry