Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Definition of acid

1. An acid is a chemical compound that produces hydrogen ions [glossary item missing] when dissolved in water.

Strong or weak indicate the concentrations of hydrogen ions produced. Common strong acids include hydrochloric acid (HCl), nitric acid (HNO3), and sulfuric acid (H2SO4). A common weak acid is acetic acid [glossary item missing] (CH3COOH or HC2H3O2); vinegar is a 3% solution of acetic acid.

Another weak acid important in geology is carbonic acid [glossary item missing] (H2CO3) which forms whenever atmospheric - or other - carbon dioxide (CO2) dissolves in water (H2).

Stronger acids will attack many minerals and can be used to help identify them. For example, acids attack carbonate minerals, such as calcite, causing carbon dioxide bubbles to be given off in an affect known as effervescence [glossary item missing].

Strong acids are dangerous and should be handled with care, only while wearing safety glasses and with plenty of water available.

2. Synonym of acidic
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: April 23, 2017 20:51:32
Go to top of page