Silicon Silikon

Silicon Compounds
Silicon is the second most abundant element in the Earth’s crust

Silicon usually exist in the form of
1.Silica (Silicon. Oxygen) or (silicon dioxide)
2.silicates (Silicon. Oxygen.Metal)

Silica
The chemical compound silicon dioxide also known as silica.
Silicon + Oxygen -------- Silicon dioxide (silica)
Example of silica are sand, quartz and flint.

Silicate
Silicate is the chemical compound consist of silicon, oxygen and metal
Silicon + Oxygen + Metal-------------Silicate
Example of silicate are mica, ruby and jade

Pure silicon is used to make electronic chips also known as silicon chips

Properties of silicon compounds
1.Silicon compounds are very stable
2.Silicon compounds
do not dissolve in water
do not react with acids
do not decompose when heated

Uses of silicon compounds
Mica
Used in heating appliances as electrical insulators
Quartz
Manufacture of glass
Sand
Manufacture of glass
To make container
To make insulators

Asbestos
Used as heat insulators in fire-proof clothing worn by fire fighters

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