This is enrichment for students that have finished Classic or Review Chembalancer early and are looking for a challenge. If you wish to purchase a subscription without Google advertisements, please go to http://funbasedlearning.com/purchase/default.htm.
Marking: You can either have them show you the finish screen and mark it as complete or have them fill out this worksheet.
Troubleshooting: Chembalancer requires Internet Explorer, Safari, or Firefox. If nothing happens when you click the "Start Game" button, then you need to tell Internet Explorer to allow the game to run script. Look near the top of Internet Explorer for a message saying "To help protect your security, Internet Explorer has restricted this file from showing active content that could access your computer. Click here for options...". Click the message and pick "Allowed Blocked Content". Then "Yes" on the dialog box to allow the active content, then try the "Start Game" button again. For further help, please see my product support page.