Let’s learn all about the particles that make up the atom.  The electron gets a lot of discussion, but I think you’ll be happy with how much attention protons and neutrons get! (Updated 10/13/22)

• Protons, neutrons, and electrons:  These guys live in the atom hand have crazy parties.  Or something like that.  Anyway, learn about ’em here.
• Isotopes and atomic mass:  This is really a continuation of the “protons, neutrons, and electrons having a party” tutorial, plus I’ve added a picture of a mouse lemur
• Isotopes Powerpoint:  If you like slide shows, you’ll love this interpretation of how isotopes work!
• The care and feeding of electrons:  Light, the Bohr model, and quantum mechanics.
• The real deal with electrons and orbitals:  Is the whole particle/wave thing getting you down?  Find out what’s actually happening here.
• Quantum mechanics:  Actually more of a “quantum numbers” tutorial, this will help you to understand some of the things that might be driving you nuts.
• Modern Atom:  A PowerPoint presentation about our modern quantum model of the atom.
• Electron configurations:  Learn the short and long versions of electron configurations here.
• Orbital filling diagrams:  The long version of electron configurations!

Supplemental videos:  From our friends over at Crash Course Chemistry – they do good stuff over there on a wide variety of subjects.

• Crash Course Chemistry:  The nucleus. The name really says it all.
• Crash Course Chemistry:  The electron. This is a good overview of the electron, but not a big quantum mechanics video.  Think “electron configurations.”
• Heisenburg Uncertainty Principle: What it actually means (as opposed to what you may have heard elsewhere).