|
Base (chem)
In chemistry, there are three definitions in common use of the word "base": '' Arrhenius bases'', '' Brønsted bases'', and ''Lewis base A Lewis acid (named for the American physical chemist Gilbert N. Lewis) is a chemical species that contains an empty orbital which is capable of accepting an electron pair from a Lewis base to form a Lewis adduct. A Lewis base, then, is any sp ...s''. All definitions agree that bases are substances that react with acids, as originally proposed by Guillaume-François Rouelle, G.-F. Rouelle in the mid-18th century. In 1884, Svante Arrhenius proposed that a base is a substance which dissociates in aqueous solution to form hydroxide ions OH−. These ions can react with Hydron (chemistry), hydrogen ions (H+ according to Arrhenius) from the dissociation of acids to form water in an acid–base reaction. A base was therefore a metal hydroxide such as NaOH or Calcium hydroxide, Ca(OH)2. Such aqueous hydroxide solutions were also described by c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handmade Soap Cropped And Simplified
Handmade or hand made may refer to: *Handicraft, where useful and decorative objects are made by hand *Handmade (Jimmy Rankin album), ''Handmade'' (Jimmy Rankin album), 2003 *Handmade (Hindi Zahra album), ''Handmade'' (Hindi Zahra album), 2010 *Handmade (The Ongoing Concept album), ''Handmade'' (The Ongoing Concept album), 2015 *''Handmade'', a 1970 album by Mason Williams *''Hand Made'', a 1993 album by Mitchel Forman *HandMade Films, a British film production and distribution company *''Handmade: Britain's Best Woodworker'', a British reality television series *Handmade, a former division of the Rhino Entertainment record label *''Handmade'', a web series produced by Eater (website), Eater See also * * * Handmaid, a personal maid or female servant * The Handmaid (other) * Made hand, a poker hand that does not need improvement to win {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
