1. Vypracoval: Adam Bábík
Presentation
Vypracoval: Adam Bábík

2. Silicon dioxide Synonyms silica, fumed, silicon(IV)oxide
Molecular formula
SiO2
Molecular weight
60.08
IUPAC name
dioxosilane

3. SiO2
is one of the most common chemical compounds
silica crystals are found in the nature in three forms, the most common form si quartz
pure silica is colorless or white
it is widely and abundently distributed on the Earth in the pure state or in the form of silicates
it has many important uses in various branches of industry

4. Quartz is most common form of silicon dioxide
we may found it in sand, rocks, clay and granite

5. Silicates
silicates are compounds of Silicon and Oxygen combined with one or more metal ions, for example by Iron, Calcium or Magnesium
most of minerals are formed from silica, like agate, amethyst, chalcedony, jasper, onyx, crystalline, jadeit, soapstone, topaz, zircon etc.
silicates are divided to many categories: neosilicates, sorosilicates, cyklosilicates, inosilicates, phyllosilicates and tectosilicates

6. Jadeit
Topaz
Soapstone
Zircon
Jasper
Quartz

7. Applications + products
silica is used ceramic material
it si commonly used like filler for paints, plastics, adhesives and rubber
silica is raw material for the production of glass, for windows, bottles, jars, lights bulbs and like plate glass
it withstands sudden changes of temperature, and then it can be used in parts, which are subjected to wide ranges of heat and cold

8. References: www.mineraly.net www.wildaboutrocks.com www.azom.com

9. Thanks for Your attention!!!