SILICON

HISTORY

• Used by the Egyptians in 1500 BCE
• Silicon was isolated as an element in 1824
• Jons Berzelius a Swedish Chemist discovered the element
• It was used in Egypt but where it was discovered is not known

HISTORY

• It was used for the manufacturing of glass containing silica
• Silicon is used by early civilizations to make glass
• The origin of silicon is the latin word silex (flint) or silicis (Hard Stone)
• The language is Latin

SILICON

• The element symbol is Si
• The atomic number is 14
• The atomic mass is 28.0855 amu

SOURCES

• It is located in Norway, Russia, Brazil, and Canada
• It is mined because we get it directly from the ground
• It has little processing of compounds from nature
• Because silicon is found in the Earth's crust it is abundant throughout the Earth

SOURCES

• It makes up 27.7% of the earth
• It is the second most abundant element in the crust
• It is the seventh most abundant element in the universe
• Silicon is never found in its natural state.
• It is a combonation of oxygen as a silicate ion (SiO4) in silica-rich rocks such as obsidian, granite, and diorite

PROPERTIES

• Its physical state is a solid
• Its melting point is 1410.0 degrees celsius
• Its boiling point is 2355.0 degrees celsius
• Its density is 2.329g/cm cubed

PROPERTIES

• It is a reactive element
• It reacts with halogens

COST

• Silicon in pure form is worth $5.40 per 100g
• Silicon in bulk form is worth $0.14 per 100g

UNIQUE PROPERTIES

• It is an octahedral crystalline with similar physical and
• Chemical similarities to the dimond form of carbon
• Seventh most abundant element in the universe
• Siliceous dust can cause a serious lung disease called silicosis

E-SHELL ARRANGEMENT

USES

• Silicon chips are the basis of modern electronic and computing
• Silicon is an important component of steel
• Silica found in sand is used to make concrete, brick, and, glass
• Silica is used to make fire-brick which is a type of ceramic