Oxides and peroxides are chemical compounds that contain oxygen atoms. Oxides are formed when oxygen reacts with another element, like carbon in carbon dioxide. Peroxides, on the other hand, contain an oxygen-oxygen single bond (O-O) and are known for their oxidizing properties. Both oxides and peroxides play significant roles in chemistry, industry, and everyday life. They can be found in minerals, ceramics, and even pharmaceuticals.