2. Warm-Up 11/19  Questions on Page 17?

3. Warm-Up 11/19  Name or write the formula for the following ionic compounds  CuOH- lithium fluoride  Fe(NO) 2 - manganese (IV) oxide

4. Covalent (Molecular) Compounds *A covalent bond is a chemical bond in which two or more electrons are shared by two nonmetal atoms.

5. Molecular (Covalent) Nomenclature for two nonmetals  Prefix System (binary compounds) 1. Less electronegative atom comes first. 2.Change the ending of the second element to -ide. 3.Add prefixes to indicate # of atoms. Omit mono- prefix on the FIRST element.

6. Molecular Nomenclature Prefixes PREFIX mono- di- tri- tetra- penta- hexa- hepta- octa- nona- deca- NUMBER 1 2 3 4 5 6 7 8 9 10

7. Page 19 First NonMetal Second NonMetal Molecular Formula Name 2 carbons6 fluorines 1 phosphorous5 oxygens F 10 Cl 6 CN 3 Trisilicon nonafluoride Carbon monoxide

8. Learning Check Fill in the blanks to complete the following names of covalent compounds. CO carbon ______oxide CO 2 carbon _______________ PCl 3 phosphorus _______chloride CCl 4 carbon ________chloride N 2 O_____nitrogen _____oxide

9. Learning Check 1.P 2 O 5 a) phosphorus oxide b) phosphorus pentoxide c) diphosphorus pentoxide 2.Cl 2 O 7 a) dichlorine heptoxide b) dichlorine oxide c) chlorine heptoxide 3. Cl 2 a) chlorine b) dichlorine c) dichloride

10. Mixed Review Name the following compounds: 1. CaO a) calcium oxideb) calcium(I) oxide c) calcium (II) oxide 2. SnCl 4 a) tin tetrachlorideb) tin(II) chloride c) tin(IV) chloride 3. N 2 O 3 a) nitrogen oxide b) dinitrogen trioxide c) nitrogen trioxide

11. Solution Name the following compounds: 1. CaO 2. SnCl 4 3.N 2 O 3 a) calcium oxide c) tin(IV) chloride b) Dinitrogen trioxide

12. Mixed 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

13. Mixed Practice 1. BaI 2 2. P 4 S 3 3. Ca(OH) 2 4. FeCO 3 5. Na 2 Cr 2 O 7 6. I 2 O 5 7. Cu(ClO 4 ) 2 8. CS 2 9. B 2 Cl 4

14. Properties of Covalent (Molecular) Compounds Usually gases or liquids (made of molecules) Low melting and boiling points. Poor electrical conductors in all phases. Many soluble in non-polar liquids but not in water.