Overview
•Metals and Non-Metals
•Ions and Ionic Charges
•Types of Compounds
•Systematic Names
-Writing Names and Formulas

Naming Compounds Tutorial
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General Information
Binary Ionic Compounds
Ternary Ionic Compounds/Polyatomic Ions
Naming w/metals that have more than 1 charge (Transition Metals)
Molecular Compounds
Naming Acids

Metals and Nonmetals

Stairway Of Division on Periodic Table
 non-metals

C, P, Se, I, Rn and to the right

 semi-metals

B, Si, As, Ge, Sb, Te, Po, At
All others are metals

Ions

Cations
Positively
Charged
Atoms
 i.e.
Na +

Anions

Negatively
Charged
Atoms i.e.
Cl
-

IONIC CHARGES
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Group I ->

Group II ->

Group III ->

Group IV ->
1+
2+
3+
4+

IONIC CHARGES
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Group V ->

Group VI ->
3-
2-

Group VII -> 1-

Group VIII -> Noble Gases

Ionic Compounds
• composed of positive and negative ions.
• usually formed from a metal and non-metal.
• these elements are not attached to one another.

TYPES OF COMPOUNDS

Ionic Compounds con’t
• Examples
NaCl
CaBr
2
KI

CHEMICAL FORMULAS
• shows the kind and numbers of atoms in the smallest representative unit of the substance.
 i. e.
NaCl

IONIC COMPOUNDS

A formula unit is the lowest whole number ratio of ions in an ionic compound.
 i.e.
Na
2
Cl
2
->
NaCl

There is no such thing as a molecule of NaCl!!!!!!!!!

NAMING COMPOUNDS
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Your ability to name compounds and write formula’s hinges on your ability to recognize whether a compound is Ionic or
Molecular.

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Binary means 2 elements
Ionic means a metal and a nonmetal (or cation and anion)
• charges must balance so compound charge is neutral.

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Writing Formulas from
Names
• 1st word = CATION
• 2nd word = ANION name with ide ending.

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NaBr
MgF
2

Sodium
Bromide

Magnesiu m Fluoride

BINARY IONIC
COMPOUNDS

Potassium
Chloride

Aluminum
Oxide
• notice ending of name is ide!
K + Cl ->
KCl
Al
2
3+
>
Al
2
O
O
3
3
2-

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Definition
• tightly bound groups of atoms that behave as a unit and carry a charge.

Example
SO
3
2, NO
2
, ClO
2
-

TERNARY IONIC
COMPOUNDS
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Ternary means 3 different elements
Usually contain Poly-atomic Ions
Ionic means cation and anion

TERNARY IONIC
COMPOUNDS:Writing
Formulas

Ca 2+ CO
3
2-
3
->

Calcium
Carbonate

TERNARY IONIC
COMPOUNDS: Naming

Calcium
Nitrate

Ca(NO
3
)
2

Naming with Transition
Metals
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First word = CATION

Second word = ANION
• You need to determine what charge is on the transition metal if more than one exists.

Naming Transition Metals

Copper
(I)
Oxide

Cu
2
O

Writing Formulas with
Transition Metals

FeCl
3


FeCl
2
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TYPES OF
COMPOUNDS
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Molecular Compounds
• composed of molecules in which elements share electrons.
• usually composed of 2 nonmetals.
• these elements are attached

MOLECULAR FORMULA
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Definition
• shows the numbers and kinds of atoms present in a molecule of a compound.
 i. e.
CO

TYPES OF
COMPOUNDS

Molecular Compounds con’t
•Examples
CS
2
SiO
2
BF
3

BINARY MOLECULAR
COMPOUNDS
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Binary means 2 elements

Molecular means 2 non-metals
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NO ionic charges are present

Naming Binary Molecular
Compounds
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Prefixes are used to show how many atoms are present in each molecule.
 mono, di, tri,tetra, penta, hexa, hepta, octa, nona, deca

Writing Binary Molecular
Compounds

2
•no mono prefix is used on first element

• Di means 2 oxygens!!

Naming Binary Molecular
Compounds
• PCl
3
Phosphorous
Trichloride

All binary compounds end in ide!!!

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Anion
Endings

Acid Name ide hydro-(stem)- ic acid

Example
HCl

Hydrochloric Acid

Naming with Acids

Anion
Ending ite

Example
Hydrogen
Sulfite

Acid Name
(stem)-ous acid

Sulfurous Acid

Naming with Acids
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Anion Ending

Acid Name ate
(stem)-ic acid
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Example
Hydrogen
Sulfate

Sulfuric Acid