Warm up 10-12-15 1.Covalent bonds are between _____ and _____ elements 2.Ionic bonds are between...
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Transcript of Warm up 10-12-15 1.Covalent bonds are between _____ and _____ elements 2.Ionic bonds are between...
Warm up 10-12-15
1. Covalent bonds are between _____ and _____ elements
2. Ionic bonds are between _____ and _____ elements
3. Identify if these compounds are ionic or covalent: FeS, CO2, Cl2 and AlBr3
Formulas and Names of Ionic and Covalent
Compounds
Chp 5-3 and 6-2
Nomenclature: Naming of compounds
• Must determine which type of bond made up the compound
- Ionic bond has metal elements - Covalent bond has no metal elements
Naming Covalent (Molecular) Compounds
1. Use a prefix to indicate the amount of each element in the compound2. Never use mono– on the first element name. 3. Give the last element an –ide ending.
Naming Covalent (Molecular) Compounds
• Mono– 1• Di– 2• Tri– 3• Tetra– 4• Penta– 5• Hexa– 6• Hepta– 7• Octa– 8• Nona– 9• Deca– 10
Prefixes
Examples
• CO2
• B2H4
• Dinitrogen trioxide
Naming Covalent CompoundsPractice
Chemical Formula Name1. CO2. P2S5
3. SiO2
4. SCl4
5. Trinitrogen pentabromide6. Dinitrogen trioxideWhy incorrect? Monosulfur dioxide
Naming Ionic Compounds1. Ending element change to –ide. (no prefixes)2. Make sure all the charge cancel each other out3. If there is a transition metal you indicate the charge with a roman numeral after the name of the metal.4. If it is a polyatomic ion, you simply use the name as it is. (no –ide)
Examples
1. CaCl2
2. MgI2
3. Potassium Sulfide4. Beryllium Fluoride5. Iron (II) Nitride6. FeCl2
Naming Ionic CompoundsPractice
1. ______________ AlCl3
2. ______________ Na2S
3. Lithium Bromide _____4. Calcium Fluoride _____5. Aluminum Oxide _____6. ____________ CuCl2
7. Iron (III) Phosphide ____
Writing ChemicalFormula for Ionic Compounds-Write the symbol and charge-Cation goes in front-Make sure all the chargesCancel each other out
Transitionmetal
Naming Ionic Compounds- Polyatomic Ions
(NH4)+ Ammonium (NH3) Ammonia
(OH)- Hydroxide(CO3)-2 Carbonate
(NO3)- Nitrate (NO2)- Nitrite
(SO4)-2 Sulfate (SO3)-2 Sulfite
(PO4 )-3 Phosphate (PO3)-3 Phosphite
(Cr2O7)-2 Dichromate
Naming Polyatomic Ions
1. ______________ Li2SO4
2. ______________ Sr(NO3)2
3. Potassium Phosphate _____4. Ammonium Oxide _____5. ______________ NaOH6. ______________ Ca(NO2)2
7. Calcium Carbonate ______8. Ammonium Sulfide _____
More Examples
• Mixture of covalent, ionic and polyatomic nomenclature.
SrS
Strontium Sulfide
GaCl3
Gallium Chloride
Calcium Oxide
CaO
Sulfate
SO42-
Phosphate
PO43-
Strontium Nitride
Sr3N2
Li3N
Lithium Nitride
Hydroxide
OH-
Beryllium Carbonate
BeCO3
BeSe
Beryllium Selenide
Mg(NO3)2
Magnesium Nitrate
KBr
Potassium Bromide
AlPO4
Aluminum Phosphate
Magnesium Arsenide
Mg3As2
NaOH
Sodium Hydroxide
Potassium Sulfate
K2SO4
Ba2P3
Barium Phosphide
Rubidium Phosphide
Rb3P
Potassium Chloride
KCl
Sodium Oxide
Na2O
Rb2O
Rubidium Oxide