This is a very cool app. You look at the periodic table and drag elements to mix them together and see what happens in the app. The GoReact app is a "drag and drop" laboratory. If you introduce the periodic table, you'll want to see this.
Scientists confirm new element after atoms collide
New Element #115 has been announced but is not officially "approved" (which must happen before it is added to the official periodic table.)
Scientists "slammed calcium atoms into americium." Then, the element vanished quickly into a flash of radiation - but scientists could measure it. It has 115 protons at its center so that puts it at 115 on the table. This would be a great one for classes to discuss in chemistry. Neat topic.
Make learning the Periodic Table more enjoyable by playing this 'find the element' chemistry game. Choose the level of difficulty.
http://ictmagic.wikispaces.com/Science
If you run Microsoft Office 2007 and you are a teacher, you simply MUST download this learning essentials 2.0 set of tools. From periodic tables to all sorts of things, it is really cool. I'm going to email it to my teachers now.