1. Naming Compounds
Covalent naming

2. Chemical Formulas Naming Molecules Molecules
Recently, we have worked with naming and writing formulas for ionicly bonded salts
Now we will do similar work with covalently bonded compounds (molecules)

3. Chemical Formulas Naming Molecules Rules for naming molecules
Prefixes are used to communicate how many atoms of each element are present
mono – 1 / di – 2 / tri – 3 / tetra – 4 / penta – 5 / hexa – 6 / hepta – 7 / octa – 8 / nona – 9 / deca - 10
When there is only one of the first atom, “Mono” isn’t used
The second atom ends in “-ide”

4. Chemical Formulas Practice makes perfect!
Examples: Write the names/formulas for the following molecules:
CCl4
As2O3
Nitrogen trifluoride
Diphosphorus pentoxide
Carbon tetrachloride
Diarsenic trioxide
NF3
P2O5

5. Chemical Formulas Practice makes perfect!
Write the names/formulas for the following molecules:
SF6
N2O
NO2
dichlorine octoxide
dinitrogen tetroxide
sulfur hexafluoride
dinitrogen oxide
nitrogen dioxide
Cl2O8
N2O4

6. Naming Compounds
Acid/Base naming

7. Chemical Formulas Naming Acids
Acids: compounds which release 1 or more H+ ions in water
When we name them, we consider them to be a hydrogen cation bonded to an anion
The name of the acid depends on the name of the anion

8. Chemical Formulas Naming Acids Anion name Ex. Acid Name Ex. H2SO4 HBr
-ide
Chloride, Cl-1
Hydro-____-ic acid
Hydrochloric acid, HCl
-ite
Sulfite, SO3-2
_____-ous acid
Sulfurous acid, H2SO3
-ate
Nitrate, NO3-1
_____-ic acid
Nitric acid, HNO3
H2SO4
HBr
Phosphoric acid
Nitrous acid

9. Chemical Formulas Naming Acids - Examples H2SO4 HBr Phosphoric acid
Anion: SO42- sulfate
-ate → -ic acid
Answer: Sulfuric Acid
Anion: Br- bromide
-ide → hydro____-ic acid
Answer: Hydrobromic Acid
Phosphoric acid
Nitrous acid
-ic acid → -ate
Anion: phosphate PO43-
Answer: H3PO4
-ous acid → -ite
Anion: nitrite NO2-
Answer: HNO2

10. Chemical Formulas Naming Bases
Bases: compounds which release 1 or more OH- ions in water
Just name them as the hydroxide ionic compounds that they are!
ex) NaOH sodium hydroxide
ex) Ca(OH)2 calcium hydroxide
When writing base formulas, be careful of the charge of the cation!

11. Naming Compounds
La fin!