r/AskChemistry is a subreddit with 47k members. The community frequently discusses chemistry, reaction, acid, chemicals, and reactions, and the most common flair used is inorganic/phyical chem, general, practical chemistry, medicinal chem, and organic chem.
We are chemists and scientists who help demystify molecular behavior and apply discipline to naughty, wayward reactions, with a dash of wit & humor.
From basic principles to advanced topics, we welcome discussion of all levels of chemistry & related fields (eg. pharmacology, biology, physics).
Share links, images, and citations to enhance discussions.
Expect science-fueled answers, colorful discussion, and perhaps a touch of electron-bullying.
Popular Topics in r/AskChemistry
#1
Chemistry
290 posts
#2
Reaction
18 posts
#3
Acid
15 posts
#4
Chemicals
14 posts
#5
Reactions
11 posts
#6
Lab
10 posts
#7
Organic
10 posts
#8
Water
9 posts
#9
Help
7 posts
#10
Metal
7 posts
Flair Used in r/AskChemistry
#1
Inorganic/Phyical Chem
: "Why is my sodium yellowing?"
10 posts
#2
General
: "Does "hydrogen" here mean molecules or atoms?"
8 posts
#3
Practical Chemistry
: "Is there any reason why this wouldn't work?"
4 posts
#4
Medicinal Chem
: "Why use Ritalin instead of Focalin"
4 posts
#5
Organic Chem
: "Distillation error"
4 posts
#6
Pharmaceutical
: "Update on asking for help with modifying my Adderall to make it not adderall while maintaining chirality"
3 posts
#7
Biochem
: "Why does DNA have Thymine while RNA has Uracil?"
2 posts
#8
Ball-N-Stickness
: "I acquired a new molecule pin at my 4th of July celebration"
1 post
#9
Chemical ID and Safety
: "What exactly are commercial photochromic / thermochromic pigments? I’ve used them for projects without PPE and it just occurred to me that I don’t know if these chemicals are toxic or not"
1 post
#10
Autistic Autoxidation
: "Non protic grignard workup"
1 post
Member Growth in r/AskChemistry
Yearly
+16k members(52.4%)
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Last updated: July 7, 2026