Wikipedia
Search Wikipedia:

Latest topics
» How do leavening agents make dough rise?
Thu May 11, 2017 2:42 am by bejoy

» Solvent effects on chemical reaction
Thu May 11, 2017 2:41 am by bejoy

» How does salt lower the freezing point of water?
Thu May 11, 2017 2:16 am by bejoy

» Benedict’s reagent test for Monosaccharides
Thu May 11, 2017 2:06 am by bejoy

» Industrial Production of Diethyl Ether
Thu May 11, 2017 2:04 am by bejoy

» How to prepare sodium acetate at home?
Thu May 11, 2017 1:59 am by bejoy

» Production of ethyl acetate by esterification
Tue Jan 10, 2017 5:06 am by bejoy

» Toluene biodegration using jet loop reactor
Mon Jan 09, 2017 6:41 am by bejoy

» Making of ammonia by Haber’s process
Mon Jan 09, 2017 6:15 am by bejoy

June 2017
MonTueWedThuFriSatSun
   1234
567891011
12131415161718
19202122232425
2627282930  

Calendar Calendar

Free Hit Counter

The physical properties of silica

View previous topic View next topic Go down

The physical properties of silica

Post  gill on Wed Dec 22, 2010 10:48 pm


Silica, also known as silica, chemical formula SiO2, is inorganic chemistry. The presence of crystalline silica in nature and two amorphous silicon dioxide.The crystal structure of different crystalline silica, is divided into quartz, tridymite and cristobalite three. Pure quartz is colorless crystals, large and transparent prismatic crystal of quartz is called. If the crystal containing traces of impurities with different colors, amethyst, citrine, smoky quartz and so on. Crystalline silica, the silicon atoms of the four valence electrons and four oxygen atoms form four covalent bonds, silicon atoms in the center of a regular tetrahedron, four oxygen atoms in the tetrahedron of four vertices, the whole Crystal is a giant molecule, SiO2 is the most simplified form that does not mean that a single molecule of silica, crystalline silica is only expressed in the number of atoms of silicon and oxygen ratio.


gill

Posts : 56
Join date : 2010-11-01

View user profile

Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum