Silicon Atomic Number is 14 Symbol is Si Atomic Mass is 28.09 Pure Silicon

Silicon Group 14 Carbon Family Metalloid Density of 2.33 g/cm3 Silvery color Boiling point of 2355oC Combustible solid when in powder form Melting point of 1410oC Hardness of 6.5 Mohs Solid

Silicon Incompatibilities Chlorine Fluorine Oxidizers Calcium Cesium Carbide Alkaline Carbonates

Isotopes Si22 Si23 Si24 Si25 Si26 Si27 4.16s 6ms Si28 stable >200ns

Common Compounds 1-Vinylpyrrolidone Calcium Silicate Ethyl Silicate Formula: (CH3)3-Si-[O-Si(CH3)2]n-O-Si-(CH3)3 Calcium Silicate Formula: CaSiO3 Ethyl Silicate Formula: (C2H5)4SiO4 Methyl Silicate Formula: (CH3O)4Si Silica Formula: SiO2 Silicon Formula: Si Silicon Carbide Formula: C8H10O2S Formula: SiC Silicon Tetrahydride Formula: SiH4 Talc Formula: 3MgO-4SiO2-H2O Formula: Mg3Si4O10(OH)2

Discovery Of Silicon Discoverer: Jons Berzelius Date of Discovery: 1823 Discovered in Sweden Stable Life Span Name Origin: From the Latin word silex (flint) Uses: glass, semiconductors, computer chips Obtained From: clay, granite, quartz, sand

Impact Environmental Social No negative environmental effects have been reported. It is very sustainable Used many things people use everyday Used in technology Has a positive social impact

Uses Cost Chips for computers and electronics In engines Enhances iron’s magnetic abilities In concrete and bricks In watches and clocks Cookware Medical implants Adhesives Pure Silicon $5.4 per 100g Bulk Silicon $0.14 per 100g

Interesting Facts The lowest purity electronic grade silicon can be is 99.9999999% pure. Second most abundant element on our planet is Silicon. 8th most abundant element in the universe is Silicon Silicon is made in stars with a mass of eight or more Earth sun