Silicon is a metalloid element that is a semiconductor. It has an atomic number of 14 and is in the carbon group of the periodic table. It was discovered in 1824 in Sweden by Jöns Jacob Berzelius and has many uses today including in microprocessors, ceramics, agriculture, alloys, lasers, and medicine.

2. SILICON
• It’s a metaloid chemical element
• Its atomic number is 14
• It’s from the 14 group on the periodic table
• It’s a tretel (element in the carbon group of the
periodic table)
• Its symbol is Si

3. SILICON-PROPERTIES
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Electric conductivity: semiconductor
State(natural form): solid.
Aspect: between grey and dark blue.
Melting point:16,7oK / 1413,85oC
Boiling point: 31,3oK / 2899,85oC
Density: 2,33 g/cm3
Atomic Volume: 12,06 cm3/mol

4. SILICON-ORIGINS
• Discoverer: Jöns Jacob Berzelius.
• It was discovered in Suecia.
• Year of the discover: 1824.

5. SILICON-USES
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Microprocessor
As a fireproof material: Ceramics
In agriculture as a fertilizer.
In alloys.
In lasers.
It’s used in medicine.( breast
implants and a contact lents).

6. SILICON-RECYLING
• Streams of sand are used in wafer.
• In this process, wafers can be used again in
new electronic components.