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r/AskChemistry

49.5K members. The best post we have captured here reached 5.9K upvotes, which works out to 120 per 1,000 members.

120peak upvotes per 1,000 members
49.5Kmembers
5.9Kbest post
433most comments
100posts we track

Open r/AskChemistry on Reddit β†—

What actually lands here

The mix of post types among everything we have captured. Posting a link where almost nothing but images lands is wasted effort, and this is the fastest way to see it.

42% 21% 19% 16%
Image 42% Gallery 21% Video 19% Question 16% Text 2%

The topics it labels

Flairs are the community's own categories, and the closest thing a subreddit has to telling you what it wants.

General 13 Inorganic/Phyical Chem 7 Organic Chem 4 Practical Chemistry 3 Pharmaceutical 3 Medicinal Chem 3 Haute Chemoure: The Chemical Catwalk 1 From the Windows to the Van Der Waals 1 HΓΌckel-Hershey Ξ”Hot Cocoa (Nucleophilic Nutella) 1 Chem Engineering 1

What the ceiling looks like

The biggest posts we have captured here. Links go to the original on Reddit.

Why do the bubbles in my coffee maker accelerate towards the glass when they near it?

↑ 5.9K πŸ’¬ 231 video 2025

Is there any chemical which will dissolve soap scum without damaging plumbing?

↑ 2.3K πŸ’¬ 433 image 2025

What could be the pH of this thing?

↑ 1.8K πŸ’¬ 101 video 2025

We found medical 3% hydrogen peroxide that expired in 1989. Is that an actual expiry date that matters?

↑ 1.7K πŸ’¬ 80 image 2025

Do you think the periodic table is finished?

↑ 1K πŸ’¬ 80 video 2026

Citric Acid FTW! My drain be bubblin’.

↑ 839 πŸ’¬ 67 image 2025

I made pink dye out of sunscreen and bleach. Was that potentially dangerous?

↑ 805 πŸ’¬ 83 gallery 2025

I 3d printed a bell out of plastic and it sounds metallic. What properties of metal and plastic makes most plastic sound plasticky when struck, and m…

↑ 791 πŸ’¬ 105 video 2025

I put a quarter on some ice in case my freezer ever thaws, but it's instead on an ice pedestal now? What caused this?

↑ 611 πŸ’¬ 52 gallery 2026

Random chemicals in street art

↑ 603 πŸ’¬ 48 gallery 2026

Communities its size

Within four times the member count either way, so the comparison is fair. Sorted by upside.

See what is climbing here before you write

ViralHunt tracks Reddit and eight other networks, records how every post grows, and puts what is taking off in front of your team in one list.

Start free β†’

Every figure here is what ViralHunt has captured from r/AskChemistry, not everything the community has ever posted. We deliberately do not publish an average score: our sample is weighted toward a community's best posts, so an average would be flattering and wrong. Peak per 1,000 members is computed the same way for every community listed. See how we measure.