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An acid (from the Latin acidus/acēre meaning sour) is a substance which reacts with a base. Commonly, acids can be identified as tasting sour, reacting with metals such as calcium, and bases like sodium carbonate. Aqueous acids have a pH under 7, with acidity increasing the lower the pH. Chemicals or substances having the property of an acid are said to be acidic.
- Related: Acid-base extraction, Acid value, Acid salt, Basic salt, Binary acid, Hard and soft acids and bases, Titration, Vitriol, Acid rain, Acid sulfate soil, Ocean acidification
Science Aid: Acids and Bases
scienceaid.co.uk/chemistry/physical/acidbases.html - Web
www2.iq.usp.br/docente/gutz/Curtipot_.html - Web
A summary of the Properties of Acids for the beginning chemistry student
canadaconnects.ca/chemistry/10081/ - Web
Gallery for «Acid»
The UN ECE Convention on Long-Range Transboundary Air Pollution
www.unece.org/env/lrtap/ - Web
Chem 106 – Acidity Concepts
isites.harvard.edu/.../lecture%2017.pdf - Web