Symbol: Si

Atomic number: 14

gray powder

shiny

It is solid under normal temperature and pressure.

between conductor and insulator

Reacts violently with fluorine

Reacts with alkali metals

stable in air

second only to oxygen

Manufacturing integrated circuits

Manufacturing solar panels

Aluminum silicon alloy

Copper silicon alloy

as a flux

Make sandpaper and grinding wheels

as trace elements

Deficiency or excess can be harmful

Joseph Louis Gaylussac

1823

Silicon 28

Silicon 29

Silicon 30

Silicon 32

Silicon 34

main components of soil

Organosilicon compounds

Moisture absorbers and desiccants

via carbothermal reduction reaction

By acid treatment or alkali melting

Manufacturing semiconductor devices

Making concrete and mortar

Manufacture of refractory materials and porcelain

Production of silicone oil, silicone rubber, etc.