Metal nitrates are chemical compounds formed by the reaction of metals with nitric acid. They typically consist of a metal cation and the nitrate anion, NO3-. Common examples include sodium nitrate, potassium nitrate, and calcium nitrate. These compounds are often soluble in water and are used in various applications, including fertilizers and food preservation. In addition to their agricultural uses, metal nitrates play a role in pyrotechnics and explosives due to their oxidizing properties. They can also be used in laboratories for chemical synthesis and as reagents in various reactions. Proper handling is essential, as some metal nitrates can be hazardous.