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Additional
Compound (chemistry)
English Wikipedia - The Free Encyclopedia
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Chemical compound
A
chemical compound
(or just
compound
if used in the context of
chemistry
) is an entity consisting of two or more different
atoms
which associate via
chemical bonds
. There are four types of compounds, depending on how the constituent atoms are held together:
molecules
held together by
covalent bonds
,
salt
s held together by
ionic bonds
,
intermetallic compounds
held together by
metallic bonds
, and certain
complexes
held together by
coordinate covalent bonds
. Many chemical compounds have a unique numerical identifier assigned by the
Chemical Abstracts Service
(CAS): its
CAS number
.
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