- What are the Physical Properties of Silicon?
What are the Physical
Properties of Silicon? The Physical properties of Silicon are the characteristics
that can be observed without changing the substance into another
substance. Physical properties are usually those that can be observed using our
senses such as color, luster, freezing point, boiling point, melting point, density, hardness and odor. The Physical Properties of Silicon are as follows:
What are the Physical Properties of Silicon?
||Pure silicon is a hard,
dark gray solid
shine or glow
||Silicon has two allotropic
forms, a brown amorphous form, and a dark crystalline form
||Soluble in hydrofluoric
acid and alkalis
||Melts at 1417°C
||Boils at 2600°C
||It is a semi-conductor
*Allotropic - Allotropes are
forms of an element with different physical and chemical properties
occurring in two or more crystalline forms in the same physical state.
Silicon Properties - What are the Chemical Properties of Silicon?
What are the Chemical
Properties of Silicon?
They are the characteristics that
determine how it will react with other substances or change from
one substance to another. The better we know the nature of the substance the
better we are able to understand it. Chemical properties are only observable during a
chemical reaction. Reactions to substances may be brought
about by changes brought about by burning, rusting, heating, exploding, tarnishing
etc. The Chemical
Properties of Silicon are as follows:
What are the Chemical Properties of Silicon?
||Silicon forms compounds
with metals (silicides) and with non-metals
||Combined with oxygen as
silica (silicon dioxide, SiO2) or with oxygen and metals as silicate
minerals. It is stable in air even at elevated temperatures owing to
the formation of a protective oxide film
||Dark-brown crystals that
burn in air when ignited
||Is transparent to
long-wavelength infra-red radiation
Reactivity with acids
||Dissolves only in a mixture
of nitric acid and hydrofluoric acid
Info about Silicon Properties
on Silicon properties provide facts and information about the
physical and chemical properties of Silicon which are useful as
homework help for chemistry students. Additional facts and
information regarding the Periodic Table and the elements may be
accessed via the Periodic Table Site Map.