Silicon is a metalloid with an atomic number of 14. It has a melting point of 1410°C and boiling point of 2355°C. Silicon is the second most abundant element on Earth and is used to make computer chips, solar panels, and other electronics.

2. Silicon
• Atomic Number is 14
• Symbol is Si
• Atomic Mass is 28.09
Pure Silicon

3. 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

4. Silicon
• Incompatibilities
– Chlorine
– Fluorine
– Oxidizers
– Calcium
– Cesium Carbide
– Alkaline Carbonates

5. Isotopes
• Si22 • Si27
– 6ms – 4.16s
• Si23 • Si28
– >200ns – stable
• Si29
• Si24
– stable
– 102ms
• Si30
• Si25 – stable
– 220ms
• Si26
– 2.234s

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

7. 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

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

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

11. 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