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silicic acid
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silicic acid
noun Chemistry.
any of certain amorphous gelatinous masses, formed when alkaline silicates are treated with acids, which dissociate readily into silica and water.
Origin:
1810–20
1810–20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Silicic acid
is always a great word to know.
So is unstable. Does it mean:
| a colorless, flammable gas, C4H10, a saturated aliphatic existing in two isometric forms: used chiefly in the manufacture of rubber and as fuel |
| noting compounds that readily decompose or change into other compounds |
Collins
World English Dictionary
| silicic acid | |
| —n | |
| a white gelatinous substance obtained by adding an acid to a solution of sodium silicate. It has an ill-defined composition and is best regarded as hydrated silica, SiO2.nH2O | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica
Encyclopedia
silicic acid
a compound of silicon, oxygen, and hydrogen, regarded as the parent substance from which is derived a large family-the silicates-of minerals, salts, and esters. The acid itself, having the formula Si(OH)4, can be prepared only as an unstable solution in water; its molecules readily condense with one another to form water and polymeric chains, rings, sheets, or three-dimensional networks that constitute the structural units of silica gel (q.v.) and many minerals that have very low solubility in water.
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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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