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
Aaron (given name) Aaron (given name) Aaron is a hellenized Hebrew masculine given name. The 'h' phoneme in the original Hebrew pronunciation "Aharon" (אהרן) is dropped in the Greek, Ααρών, from which the English form, Aaron, is derived. Aaron the brother of Moses is described in the Torah, the Quran and the Bah'ai Iqan. The origin of the biblical name is uncertain, however, an Ancient Egyptian origin may indicate "aha rw" meaning "warrior lion", P6-E23 or from Aaru, the Egyptian heaven ruled by Osiris. M17-G1-D21-G43-M2-M2-M2 According to other different theories, the name could be derived from various Hebrew roots meaning "high mountain", "mountain