Studying the periodic table of elements

In case you lost your own copy of the periodic table...

• Webelements.com - Online periodic table
• Chemicool.com - Another online periodic table
• Wikipedia: Periodic Table of Elements
• Dayah.com: Dynamic Periodic Table of Elements - Mouse over an element to see more about it, or highlight elements one group at a time

Balancing chemical equations

Here's a tutorial on balancing chemical equations hosted on the Ohio State University site. There are text-only and audio-enhanced versions of the tutorials. Might come in handy now that final exams are coming up.