When oxides are not very soluble, they are classified on the basis of whether or not they dissolve in acidic or basic solutions. Oxides that dissolve in both acids and bases are called amphoteric oxides. In this experiment you will test a number of oxides and classify them as acidic, basic, or amphoteric. Keep the CaO and BaO dry.
Eye protection is always a part of normal laboratory attire.
Wearing goggles is essential for safety during this experiment. Set three test tubes in a rack. Stir each mixture. Note and record any evidence for dissolving. Test the water solution with litmus.