
C.chem
Organic Chemistry Testing
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About
Randomly generated structural formulas across 6 levels (early high school up to university), each with 3 difficulty levels. Excellent practice material for any pupil or student studying chemistry. The breakdown and content of the levels:
Lvl 1: alkanes and simple alkenes
Lvl 2: Lvl 1 + more alkenes, simple branching, alcohols
Lvl 3: Lvl 2 + acids, amines, halogens
Lvl 4: Lvl 3 + alkynes, benzene and cyclic compounds (middle high school)
Lvl 5: Lvl 4 + cis/trans isomerism, recognizing asymmetric carbon atoms, thiols, aldehydes, ketones, nitro compounds, etc. (late high school)
Lvl 6: Lvl 5 + E/Z and R/S nomenclature, simple heterocyclic compounds (college, university)
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What's New in C.chem
1.01
September 1, 2026
Minor adjustments to interface and functionality





