# C.chem

> Organic Chemistry Testing

Canonical page: [https://chrome-stats.com/d/id6804392281](https://chrome-stats.com/d/id6804392281)

## Overview

- **ID:** `id6804392281`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Hans Kovi
- **Category:** Education
- **Version:** 1.01
- **Last updated:** 2026-09-01
- **First published:** 2026-08-29
- **Size:** 121 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/c-chem/id6804392281)
- **Website:** [https://www.conceptcraft.nl](https://www.conceptcraft.nl/)
- **Privacy policy:** [http://www.conceptcraft.nl](http://www.conceptcraft.nl/)

## Description

Test your knowledge of organic chemistry nomenclature. 6 levels — early high school up to university — each with 3 difficulty levels.

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)

## Rankings

- #1,469,373 — Overall

## Similar extensions and apps

- [Learn Organic Nomenclature](https://chrome-stats.com/d/id1570934959) — 4.30 / 5
- [Organic Nomenclature 2026](https://chrome-stats.com/d/id6780280518)
- [Hydrocarbons Chemical Formulas](https://chrome-stats.com/d/id795112525) — 4.50 / 5
- [Organic Chemistry Naming](https://chrome-stats.com/d/id6761313321) — 4.90 / 5
- [Organic Nomenclature](https://chrome-stats.com/d/id414464969) — 4.70 / 5
- [Organic Chemistry Naming Tutor](https://chrome-stats.com/d/id6737436327)
- [Structural Formulas Study](https://chrome-stats.com/d/id6752260162) — 5.00 / 5
- [Functional Groups in Chemistry](https://chrome-stats.com/d/id859802575) — 3.60 / 5
- [Chemical Structures Quiz](https://chrome-stats.com/d/id1397168183)
- [Chemical Substances: Chem-Quiz](https://chrome-stats.com/d/id910222433) — 4.10 / 5
- [Organic Chemistry+](https://chrome-stats.com/d/id6755389698) — 5.00 / 5
- [Awesome Organic Chemistry Flashcards](https://chrome-stats.com/d/id1225766374) — 4.20 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id6804392281)