Tutorial
This is chemicle, a wordle style game for organic chemistry molecules!
How to play
The website automatically selects a molecule, and your job is to guess its name.
Enter a guess in the box. It will be split into segments (separated by spaces), and each segment is colored according to wordle rules: green if it is in the correct spot, yellow if it appears in the molecule name but in another spot, and red if it doesn't appear at all. Segments are not part of other segments, so if meth ane, is the word, eth will appear red. Every number, comma, and dash are their own segment.
Additionally, a message of too short, too long, or correct length will tell you if your guess needs more or less segments. It does not refer to the actual length of the word, nor the chain length of the molecule. For example, 2 , 3 - di meth yl will be split into 7 segments, which is longer than the four segments in non an oic acid, even though they have the same number of characters.
In the example above, there should be a "di" prefix before the "methylpentane", so it is colored yellow, since it should all be shifted over. Below, it says too short, meaning you need to add one or more segments.
All the names are in official IUPAC form, so 1-pentanol would be invalid, and only pentan-1-ol would be right. There is only one correct solution.
Customization
You can click on the settings button to modify how you want to practice. If you want to be given information gradually as you do guesses, turn on the Gradual Hints option. The hints will be given on the 1st, 3rd, and 5th guesses. The solution will always be given on the 7th guess.
Click on the plus in the top left to generate a new molecule to guess. You can keep generating new molecules as long as you want (though some will inevitably be repeats). The randomness is always seeded based on the day. That means that the 1st, 2nd, 3rd, etc., molecules of the day will be the same for everyone.
If you find any bugs or have any suggestions, email wesleyjding@gmail.com or open an issue on the GitHub page.Created by Wesley Ding, open source under a GPL-3.0 license. The PubChem database API, Chemistry Development Kit library, and Google Font Icons were used in development of this project. Special thanks to Mr. Albritton, Mr. Gesell, and Aadit Sangvikar for their assistance. Last updated 6/2/2025.