These are before & after pictures of an experiment I did to observe the precipitates of ionic reactions, dealing with basic solubility rules. The experiment was actually a little boring and tedious as far as experiments go, but the results were colourful!
In the first picture, each row contains (in order from the top):
copper (II) nitrate
cobalt (II) nitrate
iron (III) nitrate
nickel (II) nitrate
In the second picture, each column shows the solutions after each of the following were added (in order from the left):