I’ve made a new Chemfiesta! The old site was confusing, so instead of linking to giant bodies of links, I’ve put everything into .zip files you can download. Check it out:
- Chemistry: The Awesomest Science is a complete textbook in human readable format. If you want tutorials, this is the place to go!
- Practice worksheets (lots): Lots and lots of practice worksheets about any topic you can think of. Some don’t have answers, but I’m working on getting answers for all of them, too!
- Tutorial Power Points All the PowerPoints I give my students throughout the year, for another way to solve those pesky chemistry problems. Now in handy .zip format!
- Practice quizzes: It wouldn’t be much good for you to have review stuff if you didn’t have any tests and quizzes to practice on, too, would it?
Teachers: If you want lesson plans and stuff, go to the Cavalcade o’ Teaching, which you can visit by clicking here.
Of course, this will only be handy before asteroid DEN-1987b plunges into the Pacific Ocean on June, 2028. When this happens, it’s every man and woman for themselves.
OK.
10/20/2025
The Cavalcade o' Chemistry 
Is this site still active?
Yep. I just don’t check my messages very often.
hi, I just wanted to say that I’ve been using your website ever since 2018 to help with my chemistry classes because everything else has pointless fancy wording. thanks for helping me out, im sure u helped a lot of other people out too 🙂
I found this website from your old Socratic account, and I’d like to say thank you for adding so much curriculum to your website. https://web.archive.org/web/20151107073257/http://socratic.org/users/ian-g
Dear Mr. Guch:
Still wondering, is your name pronounced g-OO-ch or g-uhh-ch?
These two science kids have grown up now. We still love chili.
Thanks always.
G-OO-ch. It’s my curse.
You probably don’t remember me, but I met with you about 17-18 years ago when I was contracted to teach Chemistry at a private school in Louisiana. I met you and you gave me a ton of resources, lots of advice and help, and bought me lunch. I have appreciated your resources all these years and am thankful for your generosity. Now, in 2023, I am teaching Chemistry once again (it’s more of a survey class–we only meet once a week) and had to re-learn everything I forgot. I came here and am delighted to see all your resources are still available! We’re working on VSEPR this week and it is foggy for me, so I’m digging in to see if I can pick it back up.
Thank you again!
Sarah
Hello Mr. Guch I was wondering which lesson would match with this prompt- Energy and energy potential of electrons. My teacher said it has something to do with Orbitals vs Arrangements of electrons.
Hello Mr Guch thank for chemisty class science good 👍
Mr. Guch,
You may not remember me, but I was one of your students at Holy Child. This must have been…. eek 23ish years ago? You inspired me to love Chemistry and I ended up majoring in Chemistry in college. I remember so much from your class. Setting your own arm on fire- may have been the highlight of my entire educational experience. You had a huge impact on me in many ways and I think about you whenever I reminisce about Chemistry. I’d like to think it is not a coincidence that you updated your comment page just a few days before I found your page again. I do hope you see this comment and would love to re-connect with you. Maureen Boucher ❤
Hey Maureen! I’m so glad that you became a chemist! I remember you from my class and it doesn’t surprise me a bit that you’ve entered the world of science. Though hopefully you’re not wearing that silly uniform anymore.
If you’re around and want to get together this summer sometime for lunch, hit me with an email. misterguch@chemfiesta.com. I’d love to meet your husband/child/pet/live-in nanny/anybody else you hang out with!
I love Geeb! We do so much chem