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amphoteric

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amphoteric
adj. functioning as both an acid and a base (Chemistry)

Wikipedia English The Free Encyclopedia

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Amphoterism
In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid as well as a base. The word is derived from the Greek word meaning "both". Many metals (such as copperzinctinleadaluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation state of the oxide.

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WordNet 2.0 Dictionary

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amphoteric

Adjective
1. having characteristics of both an acid and a base and capable of reacting as either
(synonym) amphiprotic
(antonym) acidic
(classification) chemistry, chemical science


Webster's Revised Unabridged Dictionary (1913)

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Amphoteric
(a.)
Partly one and partly the other; neither acid nor alkaline; neutral.
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About

General Chemistry Glossary

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amphoteric (ampholyte)
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A substance that can act as either an acid or a base in a reaction. For example, aluminum hydroxide can neutralize mineral acids ( Al(OH)3 + 3 HCl = AlCl3 + 3 H2O ) or strong bases ( Al(OH)3 + 3 NaOH = Na3AlO3 + 3 H2O).


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