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Naming compounds
naming ionic and molecular compounds and acids
23
Chemistry
11th Grade
02/15/2011

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Term
Positive ion
Definition
Cation
Term
Negative ion
Definition
Anion
Term
How is a cation named?
Definition
It is identified simply by the elements name (Example: Na+ is sodium)
Term
How is an anion named?
Definition
Drop the ending of the element's name and add -ide. (Example: Cl- is chloride)
Term
How do you identify it as an ionic compound for naming?
Definition
If there is a metal present in the compound.
Term
mono
Definition
one
Term
di
Definition
two
Term
tri
Definition
three
Term
tetra
Definition
four
Term
penta
Definition
five
Term
hexa
Definition
six
Term
hepta
Definition
seven
Term
octa
Definition
eight
Term
nona
Definition
nine
Term
deca
Definition
ten
Term
How do you know if it is an acid?
Definition
It usually has hydrogen as the first element.
Term
Binary Acid
Definition
Hydrogen bonded to one of the halogens (fluorine, chlorine, bromine, iodine)
Term
Oxyacid
Definition
Acids that contain hydrogen, oxygen, and a third element (usually a nonmetal).
Term
What is the rule when naming an acid if there is only one element bonded to the hydrogen?
Definition
Use "hydro" for the hydrogen, then the name of the element hydrogen is bonded to with the ending changed to "-ic", then the word "acid" (Example: HF is hydrofluoric acid)
Term
When naming an acid, if the group bonded to the hydrogen has a name that ends in "-ite", what do we change the ending to?
Definition
"-ous" (Example: HNO2  Hydrogen is bonded to nitrite so the name of this compound would be nitrous acid)
Term
When naming an acid, if the group bonded to the hydrogen has a name that ends in "-ate", what do we change the ending to?
Definition
"-ic" (Example: HClO3 Hydrogen is bonded to chlorate so the name of this compound would be chloric acid)
Term
When naming a compound the second element will change its ending to ____?
Definition
-ide (This is only when there are only two elements present - otherwise use your chart to name the polyatomic ion bonded to the first element)
Term
How to name a covalently bonded compound
Definition
Name each non-metal with a prefix representing how many of that element are present. If there is only one of the first non-metal then it does not have a prefix.
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