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Tuesday, January 11, 2011

STATE OF MATTER ?

Matter is classify in two type:

Elements is the simplest form of matter which can not be changed further by chemical or physical methods. An ATOM is the simplest form of an element, some elements is a MOLECULE.

Compound contain two or more different elements in a chemically combined form. The simplest form of a compound is a molecule.Those molecules that consist of charged ions with opposite charges are called IONIC. The other type of molecules are called COVALENT and do not consist of ions.


Elements consist same type atom


See example of ELEMENTS
SYMBOLCOMMON ELEMENTS
TYPE OF ELEMENTS
Cl2Chlorinemolecule
ArArgonatom
NeNeonatom
XeXenonatom
H2Hydrogenmolecule
MgMagnesiumatom
NaSodiumatom
O2Oxygenmolecule


Compound consist different type of atom and chemically combined.

See example of COMPOUND

SYMBOLCOMMON COMPOUNDS
TYPE
H2Owatercovalent / molecule
CO2carbon dioxidecovalent / molecule
NH3ammoniacovalent / molecule
NaClsodium chloride (Table Salts)ionic / ion
MgOmagnesium oxideionic / ion
Fe2O3iron oxide (Rust)ionic / ion
HClhydrogen chloridepolar covalent / molecule

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