Aliphatic compound hydrogen, other elements can be bound to the carbon chain, the most common being oxygen, nitrogen, sulfur, and chlorine. The least complex aliphatic compound is methane (CH). Most aliphatic compounds are flammable, allowing the use of hydrocarbons as fuel, such as methane in Bunsen burners and as liquefied natural gas (LNG), and acetylene in welding. The most important aliphatic compounds are: Important examples of low-molecular aliphatic compounds can be found in the list below (sorted by the number of carbon-atoms): Aliphatic compound In organic chemistry, hydrocarbons (compounds composed of carbon and hydrogen) are divided into two classes: aromatic compounds and
Edna (given name) Edna (given name) Edna () is a female given name originating from several languages. In Hebrew, it means "pleasure". Various women named Edna are referenced in the Old Testament apocryphal books Jubilees (where the wives of Enoch, Methuselah, and Terah are all so named) and Tobit. The name Edna may also be an Anglicized form of the Irish and Scottish name Eithne, meaning "kernel" in Gaelic. This was a very popular girl's name in the United States in the early 20th century, but has since become unfashionable. It is also a very rare surname. Edna, as derived from Hebrew, is