Your Chemistry Hometown!

Students, have I got some wondrous things for you!  Free chemistry tutorials!  Free chemistry practice!  Textbooks that don’t suck!  Chili recipes!  It’s all here for you, whether you want it or not.  And hopefully you do.

Teachers, get your free chemistry teaching stuff by clicking above!  You’ll be glad you did!

Everybody, tell  your friends about this site!  I’m always updating it (check out the new equilibria tutorials) and I’m always working on the fabulous textbooks mentioned above.  There’s something for everybody!


Ian Guch


46 Responses to Your Chemistry Hometown!

  1. Davd Stier says:

    Where did the chili recipe go? I’ve loved it for years, but never bothered to print it out.

  2. misterguch says:

    I totally forgot! I’ve put a new and improved set of instructions at (though the recipe is the same).

    • Davd Stier says:

      Thanks! (The weather is getting colder and a bowl of Mr. Guch’s Chili sounds awfully good.) I have used worksheets from your website for years and sent my students there for additional practice as well. Thanks for all of it!

  3. I have always enjoyed all of your resources. Love the upgrade and can’t wait to see what else is coming! Thanks for all the help.

  4. WOW!!! Very impressed with the changes!!

  5. Thanks for your awesome resources! It’s wonderful to have quality sites for us and our students.

  6. I have been a Mister Guch fan since ’98! I have been teaching jr high science for over ten years and chemfiesta has been in my lesson plans since the day I found it. From my first oil spill lab to buying your “For Dummies” tome, it’s been a grand ride! Thank you so much.

  7. Dear Mr. Guch
    I am a student taking chemistry at a not so local high school and in my frantic scrambling to pass tomorrows test, I have stumbled across this gem of a website. Seeing your chili recipe and your nitric acid story has truly made my day and inspired me. Please keep up the great work for your students with my thanks in mind. With luck I’ll pass another test tomorrow. Just kidding. My teacher is ruthless. Ily

  8. AKSHAYA SRI says:

    thank you sir!

  9. Hail and praises to Mr. Guch! Thanks for such a great website for chemistry and chem resources.

  10. Lisa Chee says:

    Thanks so much for spreading the love with these resources. I’ve just discovered your website and think it’s great. Your advice to kids, parents and teachers is spot on. Thanks too for the heads up about the Fugazi demo (in your blog). Who said Chemistry teachers are nerds?

  11. Steven Lewis says:

    Just found this site has been updated…great resource for teachers, very much appreciated🙂

  12. Thank you so much for these resources. You make me more efficient and effective🙂

  13. Lynne Evonne says:

    I have been struggling with trying to figure out the rationale behind how to correctly use the roman numerals when naming a compound all semester. Tonight I found this website on a practice exam we were given in class and in literally 5 minutes I had mastered the process. The way you present the “how to” step by step process helped me tremendously. I can’t thank you enough! Just call me ‘grateful college girl’

  14. Lisa Mason says:

    Thank you for your generosity in sharing your resources to the world. Aloha.

  15. vinaka and thank you once again for your greatest help … i came to understand this clearly…

  16. noddyknitter says:

    I am trying to cobble together a chemistry class for my homeschool son. Starting Grade 10. I love your site, can you recommend a good text book or other primary source to be used along with it? Thanks in advance.

    • misterguch says:

      Thanks for the nice comment about the site. I’ll email you with some thoughts.

    • Allen Shaw says:

      Ditto here, Mr. Guch. If that email turns into something that looks like a blog post, I’d sure like to read it some day. BTW, it’s awesome to see what you’re doing here!

  17. DBK DBK says:

    Wow! What an amazing site. I, too, would love to know your recommendations for a homeschooling curriculum in chemistry. You obviously know your science, but even better you appear to ENJOY it. Any suggestions you can provide would be greatly appreciated.

  18. wonderful that you have chosen to teach chemistry to all those who are interested

  19. An awesome approach.I like it

  20. The link to your Partial Pressures worksheet isn’t working. It keeps sending me to the Gas and Stoichiometry worksheet. Need help please!!!!

  21. Hello, I have used ‘Six Steps to Wonderful Graphs’ in the past in my class room with great success. I can no longer access it, but was redirected to this site. Do you still have this as an active link? If so, I would greatly appreciate it if you could help me locate it. Thanks very much.

  22. Steve Guch says:

    Hey Mister Guch —

    If you’re interested in adding an alternative vegetarian chili recipe, I can recommend one that’s first-rate based on a sampling of two: your Mom and Dad.
    BTW, the web site keeps getting better and better — particularly since (young) Steve has been getting involved.

    Old Steve

  23. Pyi Thaw says:

    thanks Mister Guch I have been using your online worksheets whenever I have chemistry. Now I am a minor in chem in college and I am still using them. Thank you

  24. Alec Blume says:

    Thank you very much, your worksheets are awesome!

  25. Alois Trancy says:

    Nice Car

  26. Alois Trancy says:

    *Shiny Car

  27. Dmeanr 99 says:

    I need the help desk! Came here for stoichiometry calculations help.

  28. Thank you for providing all of these valuable resources and for being one of my top “go to” spots for Chemistry! I’ve been “with” you since my first year of teaching 15 years ago. You’ll stick around for at least another 15 until I retire, right?

    • misterguch says:

      I’m not going anywhere! In fact, I’ve just decided to write a series of books (for free on the website, of course) that cover each aspect of first-year science. Don’t tell anybody, though!

  29. Thank you so much for all you do on this website! You saved my butt so many times during my first year teaching a high school chemistry! Now I am in my third year and it will be in Sweden. You have given a good base to work from and making it interesting and fun!

  30. Tim Frykoda says:

    So I miss not teaching high school chem alrady (new school this year), but still listen to the Descendents and wonder if they actually used to show up and raid your apricot stash? Enjoy!

  31. Johanna says:

    Just sent in a donation. You’ve helped me explain things so many times! Spent too much time here not to support. Thanks for all you do.

  32. You’re not serious about your gas stoichiometric question on water are you?
    Step 7: Switching gears to gases
    Now that we’ve done some moles-grams stuff, you’ll notice that our next step is to convert from moles of water vapor to liters of water vapor. This is done using our friend PV = nRT, or in the case of gases at STP, 22.4 L/mol.
    In this example we’re at STP, so we’ll just continue the calculation above using “22.4 L” as our conversion factor:
    Water is NOT a gas at STP, and your quantity of water has a volume of approx. 20mL. at STP., except maybe on Venus or Mercury..

    • misterguch says:

      Hi. I’m glad you pointed this out to me because it’s a perfect example of how two important things:
      1) I can screw up like anybody else.
      2) The best way to fix problems is to get the input of others.
      I will, by the end of the afternoon, make sure that the problem you mentioned is fixed. I would also like to encourage you (and anybody else reading this) to please let me know when there are mistakes on the site. It’s only through comments like yours that I know there’s a problem.

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