polyatomic ions
DESCRIPTION
Polyatomic Ions. NO 3 - nitrate ion NO 2 - nitrite ion. Polyatomic Ions. You can make additional polyatomic ions by adding a H + to the ion! CO 3 -2 is carbonate HCO 3 – is hydrogen carbonate H 2 PO 4 – is dihydrogen phosphate HSO 4 – is hydrogen sulfate. - PowerPoint PPT PresentationTRANSCRIPT
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NONO33--
nitrate ionnitrate ion
NONO22--
nitrite ionnitrite ion
Polyatomic Polyatomic IonsIons
Polyatomic Polyatomic IonsIons
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You can make additional polyatomic ions You can make additional polyatomic ions by adding a Hby adding a H++ to the ion! to the ion!
COCO33 -2-2 is carbonate is carbonate
HCOHCO33–– is hydrogen carbonate is hydrogen carbonate
HH22POPO44–– is dihydrogen phosphate is dihydrogen phosphate
HSOHSO44–– is hydrogen sulfate is hydrogen sulfate
Polyatomic IonsPolyatomic IonsPolyatomic IonsPolyatomic Ions
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Ternary Ionic NomenclatureTernary Ionic Nomenclature
Writing Formulas
• Write each ion, cation first. Don’t show charges in the final formula.
• Overall charge must equal zero.• If charges cancel, just write symbols.• If not, use subscripts to balance charges.
• Use parentheses to show more than one of a particular polyatomic ion.
• Use Roman numerals indicate the ion’s charge when needed (stock system)
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Ternary Ionic NomenclatureTernary Ionic Nomenclature
Sodium SulfateNa+ and SO4 -2
Na2SO4
Iron (III) hydroxideFe+3 and OH-
Fe(OH)3
Ammonium carbonateNH4
+ and CO3 –2
(NH4)2CO3
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Learning Check Learning Check
1. aluminum nitrate
a) AlNO3 b) Al(NO)3 c) Al(NO3)3
2. copper(II) nitrate
a) CuNO3 b) Cu(NO3)2 c) Cu2(NO3)
3. Iron (III) hydroxide
a) FeOH b) Fe3OH c) Fe(OH)3
4. Tin(IV) hydroxide
a) Sn(OH)4 b) Sn(OH)2 c) Sn4(OH)
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Naming Ternary CompoundsNaming Ternary Compounds
Contains at least 3 elementsThere MUST be at least one polyatomic ion
(it helps to circle the ions)Examples:
NaNO3 Sodium nitrate
K2SO4 Potassium sulfate
Al(HCO3)3 Aluminum bicarbonate
or
Aluminum hydrogen carbonate
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Learning Check Learning Check
Match each set with the correct name:
1. Na2CO3 a) magnesium sulfite
MgSO3 b) magnesium sulfate
MgSO4 c) sodium carbonate
2 . Ca(HCO3)2 a) calcium carbonate
CaCO3 b) calcium phosphate
Ca3(PO4)2 c) calcium bicarbonate
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Mixed Practice!Mixed Practice!
Name the following:
1. Na2O
2. CaCO3
3. PbS2
4. Sn3N2
5. Cu3PO4
6. HgF2
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Mixed Up… The Other WayMixed Up… The Other Way
Write the formula:
1. Copper (II) chlorate
2. Calcium nitride
3. Aluminum carbonate
4. Potassium bromide
5. Barium fluoride
6. Cesium hydroxide
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Naming Molecular Naming Molecular CompoundsCompounds
CH4 methaneBCl3 boron trichloride
CO2 Carbon dioxide
All are formed from two or more nonmetals.
Ionic compounds generally involve a metal and nonmetal (NaCl)
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Molecular (Covalent) NomenclatureMolecular (Covalent) Nomenclaturefor two for two nonnonmetalsmetals
• Prefix System (binary compounds)
1. Less electronegative atom comes first.
2. Add prefixes to indicate # of atoms. Omit mono- prefix on the FIRST element. Mono- is OPTIONAL on the SECOND element (in this class, it’s NOT optional!).
3. Change the ending of the second element to -ide.
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PREFIXmono-di-tri-tetra-penta-hexa-hepta-octa-nona-deca-
NUMBER123456789
10
Molecular Nomenclature PrefixesMolecular Nomenclature Prefixes
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• CCl4
• N2O
• SF6
• carbon tetrachloride
• dinitrogen monoxide
• sulfur hexafluoride
Molecular Nomenclature: ExamplesMolecular Nomenclature: Examples
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• arsenic trichloride
• dinitrogen pentoxide
• tetraphosphorus decoxide
• AsCl3
• N2O5
• P4O10
More Molecular ExamplesMore Molecular Examples
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Learning Check Learning Check
Fill in the blanks to complete the following names of covalent compounds.
CO carbon ______oxide
CO2 carbon _______________
PCl3 phosphorus _______chloride
CCl4 carbon ________chloride
N2O _____nitrogen _____oxide
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Learning Check Learning Check
1. P2O5 a) phosphorus oxide
b) phosphorus pentoxide
c) diphosphorus pentoxide
2. Cl2O7 a) dichlorine heptoxide
b) dichlorine oxide
c) chlorine heptoxide
3. Cl2 a) chlorine
b) dichlorine
c) dichloride
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Overall strategy for naming chemical Overall strategy for naming chemical compounds.compounds.
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A flow chart for naming binary compounds.A flow chart for naming binary compounds.
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Mixed Review Mixed Review
Name the following compounds:
1. CaOa) calcium oxide b) calcium(I) oxidec) calcium (II) oxide
2. SnCl4
a) tin tetrachloride b) tin(II) chloride
c) tin(IV) chloride
3. N2O3
a) nitrogen oxide b) dinitrogen trioxidec) nitrogen trioxide
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Solution Solution
Name the following compounds:
1. CaO
2. SnCl4
3. N2O3
a) calcium oxide
c) tin(IV) chloride
b) Dinitrogen trioxide
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Mixed PracticeMixed Practice
1. Dinitrogen monoxide
2. Potassium sulfide
3. Copper (II) nitrate
4. Dichlorine heptoxide
5. Chromium (III) sulfate
6. Iron (III) sulfite
7. Calcium oxide
8. Barium carbonate
9. Iodine monochloride
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Mixed PracticeMixed Practice
1.1. BaIBaI22
2.2. PP44SS33
3.3. Ca(OH)Ca(OH)22
4.4. FeCOFeCO33
5.5. NaNa22CrCr22OO77
6.6. II22OO55
7.7. Cu(ClOCu(ClO44))22
8.8. CSCS22
9.9. BB22ClCl44
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Acid NomenclatureAcid Nomenclature
• AcidsAcids
• Compounds that form HCompounds that form H++ in water. in water.
• Formulas usually begin with ‘H’.Formulas usually begin with ‘H’.
• In order to be an acid instead of a gas, binary In order to be an acid instead of a gas, binary
acids must be aqueous (dissolved in water)acids must be aqueous (dissolved in water)
• Ternary acids are ALL aqueousTernary acids are ALL aqueous
• Examples:Examples:
• HCl HCl (aq)(aq) – hydrochloric acid – hydrochloric acid
• HNOHNO33 – nitric acid – nitric acid
• HH22SOSO44 – sulfuric acid – sulfuric acid
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Anion Ending Acid Name
-ide hydro-(stem)-ic acid
-ate (stem)-ic acid
-ite (stem)-ous acid
Acid Nomenclature ReviewAcid Nomenclature Review
No OxygenNo Oxygen
w/Oxygen w/Oxygen
An easy way to remember which goes with which…An easy way to remember which goes with which…
““In the cafeteria, you In the cafeteria, you ATEATE something something ICICky”ky”
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Acid Nomenclature FlowchartAcid Nomenclature Flowchart
h yd ro - p re fix-ic en d in g
2 e lem en ts
-a te en d in gb ecom es-ic en d in g
-ite en d in gb ecom es
-o u s en d in g
n o h yd ro - p re fix
3 e lem en ts
AC ID Ss ta rt w ith 'H '
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• HBr HBr (aq)(aq)
• HH22COCO33
• HH22SOSO33
• No oxygen, No oxygen, --ideide
• Has oxygen, Has oxygen, -ate-ate
• Has oxygen, Has oxygen, -ite-ite
hydrohydrobromic bromic
acidacid
carboncarbonicic
acidacid
sulfursulfurousous
acidacid
Acid NomenclatureAcid Nomenclature
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• hydrofluoric acidhydrofluoric acid
• sulfuric acidsulfuric acid
• nitrous acidnitrous acid
• 2 elements2 elements
• 3 elements, 3 elements, -ic-ic
• 3 elements, 3 elements, -ous-ous
HF HF (aq)(aq)
HH22SOSO44
HNOHNO22
Acid NomenclatureAcid Nomenclature
HH++ F- F-
HH++ SO SO442-2-
HH++ NO NO22--
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Name ‘Em!Name ‘Em!
• HI HI (aq)(aq)
• HClHCl
• HH22SOSO33
• HNOHNO33
• HIOHIO44
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Write the Formula!Write the Formula!
• Hydrobromic acidHydrobromic acid
• Nitrous acidNitrous acid
• Carbonic acidCarbonic acid
• Phosphoric acidPhosphoric acid
• Hydrotelluric acidHydrotelluric acid
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Nomenclature Summary Flowchart
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Now it’s Study TimeNow it’s Study Time
DONEDONE
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Rainbow Matrix GameRainbow Matrix Game
• Link on Chemistry Geek.com on Chemistry I page
• http://chemistrygeek.com/rainbow
Use [ ] to represent subscripts since you can’t enter subscripts into the computer
So H2O would be H[2]OAnd Al2(SO4)3 would be Al[2](SO[4])[3]
Additional Polyatomic Ions (you do not have to memorize these, but they are in the game!)
Borate = BO3 -3 ; Silicate = SiO4 -4 ;Manganate = MnO4 -2 (permanganate is -1)