Chemical species
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A chemical species is a type of matter that displays a specific, uniquely identifying, set of properties. A systematic chemical name can be used to refer to a chemical species.
Table salt, formally sodium chloride (NaCl), is an example of a crystalline ionic chemical species. The crystal matrix of table salt is formed from two chemically distinct ions: Na+ and Cl- each of which are also chemical species. Unless otherwise required by context, we assume that Na and Cl appear in their natural abundance ratio in these chemical species
Chemical nomenclature
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Chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union
Chemical species
…A chemical species is a type of matter that displays a specific, uniquely identifying, set of properties. A systematic chemical name can be used to refer to a chemical species. In practice, chemists identify chemical species by differentiating between features of molecular structure…
Title page of Méthode de nomenclature chimique.
Louis-Bernard Guyton de Morveau
Antoine Lavoisier
Claude Louis Berthollet