r/chemhelp

Community Overview
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About r/chemhelp

r/chemhelp is place where you can seek help with whatever chemistry problem you may encounter. Whether you are a high school student trying to understand the fundamentals, a college student struggling through upper division courses, or a professional seeking pointers on a real problem you are trying to solve, you have a place here.

The community at a glance

r/chemhelp is a Subreddit for Chemists with roughly 113K members. It has been around since 2010. It uses a forum format for communication. On the Hive Index it ranks #3 in the Chemistry communities list.

Roughly 16K members have joined in the past year. Popular discussion topics include Chemistry, Struggling, and Question. Product recommendations often mention books and chemistry textbooks/resources.

On Reddit
Established 2010
113K Members

Community Topics

Community Features

Forum

This community has a forum

Subreddit Analysis

via GummySearch
Yearly: +16K members
Growth: +17.0% / year

Member growth over time

All time (yearly)

  • 2013: 1K members
  • 2014: 1K members
  • 2015: 1K members
  • 2016: 1K members
  • 2017: 2K members
  • 2018: 3K members
  • 2019: 14K members
  • 2020: 20K members
  • 2021: 12K members
  • 2022: 6K members
  • 2024: 24K members
  • 2025: 18K members
  • 2026: 9K members

Past year (monthly)

  • Aug: 1K members
  • Sep: 1K members
  • Oct: 1K members
  • Nov: 2K members
  • Dec: 2K members
  • Jan: 1K members
  • Feb: 1K members
  • Mar: 2K members
  • Apr: 1K members
  • May: 2K members
  • Jun: 1K members
  • Jul: 157 members

Topics

  • Chemistry
    103 posts in the past month
    #1
    Chemistry
    103
  • Struggling
    66 posts in the past month
    #2
    Struggling
    66
  • Question
    48 posts in the past month
    #3
    Question
    48
  • Reaction
    45 posts in the past month
    #4
    Reaction
    45
  • Chem
    41 posts in the past month
    #5
    Chem
    41

Flair

  • Organic
    99 posts in the past month
    1. I literally cannot figure it plz help
    2. What is this bond (?)
    3. Practise question - nucleophilicity
    #1
    Organic
    I literally cannot figure it plz help · What is this bond (?) · Practise question - nucleophilicity
    99
  • General/High School
    47 posts in the past month
    1. Do they mean hydrogen atom or molecule here?
    2. Why is this answer wrong I don’t get it lol
    3. How will I find the molar mass of Metal 'M' ?
    #2
    General/High School
    Do they mean hydrogen atom or molecule here? · Why is this answer wrong I don’t get it lol · How will I find the molar mass of Metal 'M' ?
    47
  • Inorganic
    13 posts in the past month
    1. MO's of CO
    2. Can someone explain why we add the 79Br81Br and 81Br79Br together? I don't understand why its 1/2. ( Mass spectrometry question )
    3. Entropy differences in aqueous solutions when the solute is a salt vs a hydrophobic molecule
    #3
    Inorganic
    MO's of CO · Can someone explain why we add the 79Br81Br and 81Br79Br together? I don't understand why its 1/2. ( Mass spectrometry question ) · Entropy differences in aqueous solutions when the solute is a salt vs a hydrophobic molecule
    13
  • Analytical
    13 posts in the past month
    1. Porcelain crucible cracked, is it still safe to use at 105°C? + question about constant weight of crucible for moisture content determination
    2. Just here to ask for some confirmation, if this is in fact benzoic acid
    3. Can someone check my answer (and explain)?
    #4
    Analytical
    Porcelain crucible cracked, is it still safe to use at 105°C? + question about constant weight of crucible for moisture content determination · Just here to ask for some confirmation, if this is in fact benzoic acid · Can someone check my answer (and explain)?
    13
  • Other
    10 posts in the past month
    1. What May be the the best Educational Experiment in Chemistry throughout history?
    2. Chem Study Buddies?
    3. How are you supposed to study for gen chem 2 when taking it during the summer? Struggling and burning out
    #5
    Other
    What May be the the best Educational Experiment in Chemistry throughout history? · Chem Study Buddies? · How are you supposed to study for gen chem 2 when taking it during the summer? Struggling and burning out
    10

Product recommendations

  • books
    7 posts in the past month
    1. [Organic Chemistry: Requesting Help Finding a Book] I am trying to find a book for my Intermediate Organic Chemistry class. The best option would be PDF, but if that is not possible, even lower-cost used would be helpful. The university price is around $280 which is not even remotely possible for me
    2. Which book is this? And do you have any recommended books to learn university coordination compounds?
    3. Could anyone recommend me a good intro course/book?
    #1
    books
    [Organic Chemistry: Requesting Help Finding a Book] I am trying to find a book for my Intermediate Organic Chemistry class. The best option would be PDF, but if that is not possible, even lower-cost used would be helpful. The university price is around $280 which is not even remotely possible for me · Which book is this? And do you have any recommended books to learn university coordination compounds? · Could anyone recommend me a good intro course/book?
    7
  • chemistry textbooks/resources
    6 posts in the past month
    1. Seeking Recommendations: Best Chemistry Textbooks/Resources for Self-Learning
    2. Best textbook for Inorganic Chemistry 2?
    3. [Organic Chemistry: Requesting Help Finding a Book] I am trying to find a book for my Intermediate Organic Chemistry class. The best option would be PDF, but if that is not possible, even lower-cost used would be helpful. The university price is around $280 which is not even remotely possible for me
    #2
    chemistry textbooks/resources
    Seeking Recommendations: Best Chemistry Textbooks/Resources for Self-Learning · Best textbook for Inorganic Chemistry 2? · [Organic Chemistry: Requesting Help Finding a Book] I am trying to find a book for my Intermediate Organic Chemistry class. The best option would be PDF, but if that is not possible, even lower-cost used would be helpful. The university price is around $280 which is not even remotely possible for me
    6
View full analysis on GummySearchSynced 6/29/2026

Frequently asked questions

Who is r/chemhelp for?
Best for Chemists enthusiasts looking for a Reddit-based community with forum discussion.
Is r/chemhelp free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/chemhelp have?
Roughly 113K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/chemhelp on?
r/chemhelp runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/chemhelp cover?
On the Hive Index, r/chemhelp is organized under Chemists.
How do I join r/chemhelp?
You can join r/chemhelp by clicking this link, or pressing the "Go to community" button above.
What are the Chemistry communities like?
Welcome to the world of online communities for Chemists! These vibrant and diverse platforms offer a virtual haven for scientists, researchers, and enthusiasts alike. Joining these communities provides an invaluable opportunity to connect, collaborate, and exchange knowledge with fellow chemists from around the globe. With variations across different communities, you can find forums dedicated to specific branches of chemistry, such as organic, inorganic, analytical, and physical chemistry. Some communities focus on academic discussions and research sharing, while others cater to industry professionals seeking advice on practical applications and career development. Additionally, you may find platforms that emphasize mentorship and support for students and early-career chemists. Whether you're looking for guidance, inspiration, networking opportunities, or simply a space to geek out about chemistry, these online communities have got you covered.
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Added 6/13/2026

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