1 Naming Review

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Chemical Names and
Formulas
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


semi-metals


C, P, Se, I, Rn and to the right
B, Si, As, Ge, Sb, Te, Po, At
All others are metals
Ions
 Cations
 Anions
Positively
Charged
Atoms
+
 i.e.
Na
Negatively
Charged
Atoms
 i.e.
Cl
IONIC CHARGES

Group I ->
1+

Group II ->
2+

Group III ->
3+

Group IV ->
4+
IONIC CHARGES

Group V ->
3-

Group VI ->
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
CaBr2
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.
 There
Na2Cl2
->
NaCl
is no such thing as a
molecule of NaCl!!!!!!!!!
NAMING COMPOUNDS
 Your
ability to name
compounds and write
formula’s hinges on
your ability to
recognize whether a
compound is Ionic or
Molecular.
BINARY IONIC
COMPOUNDS


Binary means 2 elements
Ionic means a metal and a nonmetal (or cation and anion)
• charges must balance so
compound charge is
neutral.
BINARY IONIC
COMPOUNDS
 Writing
Formulas from
Names
• 1st word = CATION
• 2nd word = ANION
name with ide ending.
BINARY IONIC
COMPOUNDS


NaBr
MgF2
Sodium
Bromide
Magnesiu
m Fluoride
BINARY IONIC
COMPOUNDS
 Potassium
Chloride
 Aluminum
Oxide
• notice
ending of
name is ide!
K+Cl- ->
KCl
Al23+O32- >
Al2O3
Polyatomic Ions
 Definition
•tightly bound groups of
atoms that behave as a
unit and carry a charge.
 Example
2SO3 , NO2 , ClO2
TERNARY IONIC
COMPOUNDS
Ternary means 3 different elements
 Usually contain Poly-atomic Ions
 Ionic means cation and anion

TERNARY IONIC
COMPOUNDS:Writing
Formulas
Ca2+CO32-
->
CaCO3
Calcium
Carbonate
TERNARY IONIC
COMPOUNDS: Naming
Calcium
Nitrate
Ca(NO3)2
Naming with Transition
Metals
 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
Cu2O
Writing Formulas with
Transition Metals
FeCl3
FeCl2
Iron
(III)
Chloride
Iron
(II)
Chloride
TYPES OF
COMPOUNDS
 Molecular
Compounds
• composed of molecules in
which elements share electrons.
• usually composed of 2
nonmetals.
• these elements are attached
MOLECULAR FORMULA
 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
CS2
SiO2
BF3
BINARY MOLECULAR
COMPOUNDS
Binary
means 2
elements
Molecular means 2
non-metals
NO ionic charges are
present
Naming Binary Molecular
Compounds
 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
CO2
•no
mono prefix is
used on first
element
Carbon
Dioxide
• Di means 2
oxygens!!
Naming Binary Molecular
Compounds
• PCl3
Phosphorous
Trichloride
 All binary compounds end
in ide!!!
Naming with Acids
 Anion
Endings
ide
 Example
HCl
 Acid
Name
hydro-(stem)- ic
acid
 Hydrochloric
Acid
Naming with Acids
 Anion
Ending
ite
 Example
Hydrogen
Sulfite
 Acid
Name
(stem)-ous
acid
 Sulfurous
Acid
Naming with Acids
 Anion
Ending
ate
 Example
Hydrogen
Sulfate
 Acid
Name
(stem)-ic acid
 Sulfuric
Acid
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