Being able to readily identify a species with regards to its acid/base behavior is a very useful skill, and this page provides basic practice in this area. Though most of the species should be easily recognized, feel free to use whatever reference materials you wish. Ultimately the goal is to be able to run through the drills without the need of such aids. When you press "New Species", a formula will appear to the right of the table. Click on the appropriate bubble and see the results of your decision. If you misidentify the species, the answer will appear and you will no longer be able to submit an answer to that question.