Chemical
base
base [ beys ]
Etymology:
Greek basis = bottom or foundation
Definitions related to base:
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A substance that dissociates to give hydroxide ions in aqueous solutions; a substance capable of donating a pair of electrons (to an acid) for the formation of a coordinate covalent bond; a substance whose molecule or ion can combine with a proton (hydrogen ion); a substance that combines with acids to form salts.NCI ThesaurusU.S. National Cancer Institute, 2021
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Fundamental category of chemical compounds identified by certain common characteristics such as the ability to react with acids to form salts, dissociate to give hydroxide ions in aqueous solution, capable of donating a pair of electrons to an acid for formation of a coordinate covalent bond, and able to turn litmus paper blue.CRISP ThesaurusNational Institutes of Health, 2006
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(alkalinity) In chemistry, a substance that can accept hydrogen ions in water and can neutralize an acid. Bases feel soapy or slippery on the skin and they can turn certain dyes blue. An example of a base is sodium hydroxide. Basicity is measured on a scale called the pH scale. On this scale, a pH value of 7 is neutral, and a pH value of more than 7 to 14 shows increasing basicity.NCI Dictionary of Cancer TermsU.S. National Cancer Institute, 2021
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