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News & Updates
Season announcements, exam guidance, and Team USA results from the U.S. National Chemistry Olympiad.
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Stoichiometry, Solutions and Gases: The USNCO Topics You Think You Have Already Mastered (2026)
Nobody loses a chemistry olympiad on entropy alone. The quantitative foundation band, moles, solutions and gases, is where strong students quietly leak marks under time pressure.
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The ACS International Chapter Route: How US-Passport Students in China Actually Enter the USNCO (2026)
One of the three USNCO eligibility cases can run the full route from inside China, through an ACS International Chemical Sciences Chapter. What it requires and how to check it.
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Building a School Chemistry Olympiad Programme: A Three-Year Plan for China-Based Schools (2026)
A club runs events; a programme builds chemists. A three-year build for China-based schools: entry-route governance, staffing and timetable, and what to measure instead of medals.
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From a Chinese-Curriculum Background to USNCO Chemistry: What Transfers and What Does Not (2026)
Students from a Chinese-curriculum chemistry background arrive with real strengths and three specific gaps. What transfers, what half transfers, and an eight-week bridge.
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When to Start USNCO Preparation: A Grade 9-12 Plan for China-Based Students (2026)
Is Grade 11 too late for chemistry olympiad preparation? What each year from Grade 9 to Grade 12 is actually for, plus the enrolment rule that quietly decides your route.
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Why You Keep Losing the Same Marks: A Chemistry Error Log That Actually Works (2026)
Most chemistry olympiad practice is exposure, not diagnosis. A five-way mistake taxonomy, a ninety-second log entry and a re-test ladder that stops the same marks going twice.
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The USNCO Bookshelf: Which Chemistry Books Actually Match the Syllabus (2026)
No single textbook covers the chemistry olympiad syllabus. A three-layer shelf: one general spine, four topic specialists, and the problem sets where the real gains are.
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Structure, Bonding and Periodic Trends: The USNCO Marks You Should Never Lose (2026)
Structure and bonding questions are the fastest marks on a chemistry olympiad paper, and the ones students quietly lose. The trends, the VSEPR routine and the drills that fix it.
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The Maths Behind Chemistry Olympiad Problems: Logs, Approximations and Sig Figs (2026)
Most lost time on chemistry olympiad problems is arithmetic, not chemistry. The log values worth memorising, when the x-is-small shortcut is legal, and the sig-fig rules that decide marks.
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USNCO Electrochemistry and Kinetics: The Under-Trained Pair (2026)
Electrochemistry and kinetics are the two physical-chemistry blocks school courses under-train. One triangle and one selector chart cover most of what questions ask – plus the eight traps.