Naming Compounds

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Naming Compounds
Sam
Suzy
Al
Jo
Phyllis Bartosiewicz
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The general formula for a compound is PxQy
P and Q can b e
Atoms
Monatomic ions
Polyatomic ions
x and y tell us how many of each
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Terms
atom neutral, the smallest particle of an
element monatomic ion carries a charge, one
type of atom polyatomic ion carries a charge,
more than one type of atom
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PxQy
Is P H ?
yes
no
i.e. Is the first element H?
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Name the compound as an acid
Suffix of the anion ?
ide
ate
ite
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Acid name
hydro (stem) ic acid
Examples
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Acid Name
(stem) ous acid
Examples
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Acid Name
(stem) - ic acid
Examples
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In the chemical formula, are there
More than 2 Elements ?
no
yes
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Compound contains a polyatomic ion.
Is P in Group A ?
yes
no
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Just name the ions!
Examples Li2CO3 lithium carbonate LiCN
lithium cyanide KSO4 potassium
sulfate NaNO2 sodium nitrite KOH potassium
hydroxide
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Compound is a binary compound
Is P a metal ?
no
yes
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Is P a group A metal?
no
yes
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Just name the ions!
Examples BaS barium sulfide MgBr2 magnesium
bromide NaCl sodium chloride CaI2 calcium
iodide
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Name the ions, but use roman numerals with the
cation!
Examples FeSO3 iron (II) sulfite
Cr(NO3) chromium (II) nitrate Fe(ClO3)3 iron
(III) chlorate Cu2HPO4 copper (I) hydrogen
phosphate
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Name the ions, but use roman numerals with the
cation!
Examples FeCl2 iron (II) chloride SnBr2 tin
(II) bromide Fe2S3 iron (III)
sulfide CoO cobalt (II) oxide
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Compound is a binary molecular compound.
Use prefixes in the name!
Examples N2O3 dinitrogen trioxide OF2 oxygen
diflouride P4O10 tetra phosphorus
pentaoxide CCl4 carbon tetrachloride
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