Why doesn't sand dissolve in water?

Answer

Silicon dioxide, the primary component in sand, forms in large crystalline structures, which are held together by covalent bonds. These bonds require more energy to break than the polarity of water is able to supply. While water is able to dissolve a minute amount of silicon dioxide, natural water supplies are at the saturation point and unable to dissolve any more sand.

Silicon dioxide is the most abundant chemical compound in the earth's crust. It is the primary component of quartz, sandstone, opal, granite, clay and many rocks. It forms the skeletal parts of diatoms and sponges. In higher plants, the chemical forms stems and other tissues. It is relatively unreactive with most chemicals, including strong acids, with the exception of hydrofluoric acid, making silica glass a good choice for laboratory glassware.

According to About.com, sand is technically just a size category. It is a particulate matter larger than slit, yet smaller than gravel. Many scientists and geologists have different definitions for what sand is.

Dirty sand is quartz that mixes with other mineral grains of similar size. In certain locations, basalt lava weathers to create black sand. In others, olivine forms green sandy beaches. While these other types of sands include chemicals other than silicon dioxide, they are also relatively insoluble in water.

Q&A Related to "Why doesn't sand dissolve in water?"
Sand can't dissolve in water because the 'spaces' in between the water particles are too small and the sand particles are to big to 'hide' in them, which is what would happen, for
http://wiki.answers.com/Q/Why_doesn't_sand_dissolv...
Oil can't dissolve in water because it is a nonpolar molecule. Water is a polar molecule, which means it has a positive and a negative charge. Polar and nonpolar molecules actually
http://www.ask.com/web-answers/Science/Other/why_d...
If you think about it, most things that dissolve in hot water also dissolve in cold water, but more slowly. If sand was soluble in water then that is where it would be - dissolved
http://answers.yahoo.com/question/index?qid=200811...
Because sugar is soluble in water and sand is not.
http://www.chacha.com/question/why-is-it-that-suga...
Explore this Topic
Fat doesn't dissolve in water because fat is an oil. Water is a polar molecule while fat is a non polar molecule. These different molecular types will not mix ...
The reason why copper doesnâ€â&dbquo;¢t dissolve in hydrochloric acid is due to the copper ...
Sugar dissolves in water because it is held together by some relatively weak intermolecular forces that are split by water. Furthermore, the process is made possible ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com