1. Bell ringer- Name or generate formulas for the following: GeS 2 Scandium nitride CaOVanadium (V) ferrocyanide

2. { Covalent Bonds Nomenclature

3. CovalentsCovalents watch until 11:25 mark Covalents

4. BrightStorm BrightStorm Covalent naming BrightStorm

5. 1. Identify the following as ionic or covalent- 2. Sodium chloride 3. Cl 2 4. Dihydrogen monoxide 5. MgCl 2 6. Germanium Carbide 7. CH 4 Bellringer

6. Steps to naming Covalents 1.Id metal, nonmetal (must not have a metal) 2.Write out element names, drop the ending off second one and replace with –ide 3.Count how many of each element you have. 4.Place the prefix that corresponds to the number in front of the element name.

7. Special notes- Don’t ever simplify covalents When using tetra or penta with an oxide drop the –a and just use -tetr or –pent When using mono- with an oxide drop the –o and just use mon- Don’t use mono- on the first word

8. List of prefixes- # of elements prefix# of elements Prefix 1mono6hexa 2di7hepta 3tri8octa 4tetra9nona 5penta10deca

9. Formula N2F4N2F4 SiCl 4 ClF 3 SiO 2 Dinitrogen tetrafluoride Silicon tetrachloride Chlorine trifluoride Silicon dioxide

10. Covalent naming

11. Steps to writing covalent formulas 1.Id metal, nonmetal (must not have a metal) 2.Write out symbols. 3.Read prefix, place corresponding number in the subscript position. If it is a mono-, leave blank don’t write the one in the subscript position. 4.Don’t simplify!

12. Carbon dioxide Phosphorous triiodide Sulfur dichloride Nitrogen trifluoride Dioxygen difluoride CO 2 PI 3 SCl 2 NF 3 O2F2O2F2

13. Now it’s your turn. On the Nomenclature Worksheet, complete all problems. Mixed Ionic/Covalent Problems is for homework due Friday! Phosphorus = P 4 Oxygen = O 2 CH 4 = methane Nitrogen = N 2