Hydrogen compounds are only required to contain carbon. However, most of them also contain hydrogen, and because it is the carbon-hydrogen bond which gives this class of compounds most of its particular chemical characteristics, carbon-hydrogen bonds are required in some definitions of the word "organic" in chemistry. Millions of hydrocarbons are known, and they are usually formed by complicated synthetic pathways that seldom involve elementary hydrogen. Compounds of hydrogen are often called hydrides, a term that is used fairly loosely. The term "hydride" suggests that the H atom has acquired a negative or anionic character, denoted H, and is used when
Mia (given name) Mia (given name) Mia is a name, originating as a hypocoristic of various unrelated names. It is usually derived from the name Maria and its variants (Miriam, Maryam, Mary), but it is reportedly also used as a hypocoristic of names such as Amalia, Amelia, Emilia, Emily or Maya. The name has been popularly associated with the Italian word "mia" and the Spanish word "mía", both meaning "mine", and also recognized as a derivation from the Slavic word "mila", meaning "dear, darling". Long in use as a hypocoristic, "Mia" is recorded as an officially given name in the United States in