Chemistry Help UKFree A-level chemistry practice

Organic nomenclature challenge

I’ll show you a skeletal formula. Type the systematic name.

I’ll keep these close to the naming you’re likely to meet in your exam.

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How I mark your name

Write the full systematic name, including the locants, commas and hyphens. Ordinary keyboard hyphens and harmless capitalisation differences are fine.

Each correct name earns 2 game points. I also accept exam-safe alternatives such as propylamine; when I prefer another systematic form, I’ll show it after your answer.

If the chemistry is right but the punctuation needs tidying, you get 1 point and I’ll show the standard form. Beyond exam deliberately goes past normal A-level assessment and is there when you want a harder challenge.

What does “locant” mean?

A locant tells you where something sits in a name. It is usually a number, although it can be N for a group attached directly to nitrogen. In butan-2-ol, 2 tells you the OH group is on carbon 2. In N-methylethanamine, N tells you the methyl group is attached directly to nitrogen.