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Learn about planets outside our solar system through Exoplanets and Alien Solar Systems by Tahir Yaqoob, Ph.D., a book in our online store book collection.
Here are four different ways chemists use to show a molecule of ammonia. In the colored molecule models, nitrogen is blue and hydrogen is white.
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Windows to the Universe original artwork by Randy Russell.

Ammonia - NH3

Ammonia is a kind of gas. Ammonia molecules (NH3) have hydrogen and nitrogen atoms in them.

The air you breathe has a tiny bit of ammonia in it. When plants and animals die and decay, they give off ammonia. Ammonia is part of the Nitrogen Cycle.

Ammonia can sometimes help get pollution out of the air. Sometimes the air has acids like nitric acid and sulfuric acid in it. They make acid rain, which hurts plants and fish. Ammonia combines with these acids to make other chemicals. Those chemicals are solids called particulates, which fall out of the air.

Humans make and use lots of ammonia. We use it to make fertilizer and explosives. It is also in window cleaning products.

Last modified February 8, 2006 by Randy Russell.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA