Naming Molecular Compounds

Chemistry Joke Q: What did Santa say when it rained on Christmas day? A: HOH, HOH, HOH!!

Naming Molecular Compounds First, is the compound molecular? If the first element is a nonmetal, then the compound is molecular. DO NOT USE CHARGES!!! DO NOT SIMPLIFY!!! Instead, use PREFIXES to show how many of both elements! Don’t write mono- on first element First element keeps its name Second element ends in –ide

1 – mono- 2 – di- 3 – tri- 4 – tetra- 5 – penta- 6 – hexa- 7 – hepta- Prefixes 1 – mono- 2 – di- 3 – tri- 4 – tetra- 5 – penta- 6 – hexa- 7 – hepta- 8 – octa- 9 – nona- 10 – deca-

Name These Molecular Compounds N2O F5S2 PCl3 ClO2 SF6 Dinitrogen monoxide Pentafluorine disulfide Phosphorus trichloride Chlorine dioxide Sulfur hexafluoride

Pentaphosphorus trinitride Disulfur dichloride Going the other way… Nitrogen trifluoride Pentaphosphorus trinitride Disulfur dichloride Heptachlorine pentaphosphide Hexanitrogen tetroxide NF3 P5N3 S2Cl2 Cl7P5 N6O4

Common Names Dihydrogen monoxide  H2O  Water Nitrogen trihydride  NH3  Ammonia Carbon tetrahydride  CH4  Methane

Diatomic Molecules O2 Oxygen N2 Nitrogen F2 Fluorine ETC…..

Chemistry Joke Sung to the tune, “ We Three Kings” We the students of chemistry are Taking tests that we think are hard Dimensional Analysis, Volumes, & Densities Worrying all the time…

Chemistry Joke Ohhhhhhh… Room of wonder Room of fright We’re trying to get our structures right Could you lead us to the answer Guide us by your fluorescent light