What is Ammonia?
[[File:Ammonia.svg|100px|thumb|[[Stuctural]] formula of ammonia. N is [[nitrogen]] and H is [[hydrogen]]. The lines show that the [[atom]]s are joined by [[chemical bond]]s.]] [[File:Ammonia-3D-vdW.png|thumb|A picture to show simply how the atoms may fill space. The blue is nitrogen and the white is hydrogen.]] '''Ammonia''' is a [[chemical compound|chemical]]. Its [[formula]] is NH<sub>3</sub> (not to be confused with ''[[Ammonium]]'' that has a formula of NH4<sup>+</sup>). It is made from [[nitrogen]] and [[hydrogen]] [[atom]]s. == Properties == * It is a [[gas]] at room temperature * It is colourless * It has a strong, sharp smell * It is a [[base (chemistry)|base]] * It is an [[alkali]] * It is harmful when drank or inhaled * It dissolves in water to form a solution called [[household ammonia]] * The [[liquid]] [[boiling point|boils]] at {{convert|-33.3|°C|°F|2}}. * It freezes to white [[crystal]]s at {{convert|-77.7|°C|°F|2}}<ref>{{Cite EB1911|wstitle=Ammonia|volume=1|pages=861–863}}</ref> == Uses of ammonia == * Making [[nitric acid]] from which many other things are made * Preparing [[Wood fibre|wood pulp]] * Dissolved in water, it is [[household ammonia]], used in cleaning (such as glass) * [[Refrigerator|Refrigeration]] (making things cold) * Creating [[fertilizer]]s such as [[Ammonium nitrate]] to use on farms * Ammonia is considered as a potential [[fuel]] for future container [[ship]]s. == Ways it can be made == Many organic [[nitrogen compounds]] are in animal waste, including [[urine]] and [[guano]]. In the 19th century the [[Distillation]] (boiling for separation) of nitrogenous vegetable and animal waste was the main source of ammonia. During the 20th century the [[Haber process]] using high temperature and pressure with [[catalyst]]s (things that make reactions faster) became the main source. ==Ammonia in fish tanks== Ammonia is [[toxic]]. If a goldfish [[Aquarium|tank]] is dirty from their waste, the fish can suffer from ammonia burns which cause black spots or patches on their body. The ta