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Catalyst – October 23+6, 2009

Catalyst – October 23+6, 2009. Take out DHMO letter please. Model the formation of the following compound: H 2 S Draw the Lewis Structure for P 2. Today’s Agenda. Catalyst Review Multiple Bond Formation DHMO Letter Sharing Naming Covalent Compounds Exit Question. Today’s Objectives.

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Catalyst – October 23+6, 2009

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  1. Catalyst – October 23+6, 2009 Take out DHMO letter please. • Model the formation of the following compound: H2S • Draw the Lewis Structure for P2

  2. Today’s Agenda • Catalyst • Review Multiple Bond Formation • DHMO Letter Sharing • Naming Covalent Compounds • Exit Question

  3. Today’s Objectives • SWBAT model bond formation for single and multiple covalent bonds. • SWBAT name covalent compounds.

  4. Steps for Multiple Bond LDS’s • Write formula • Number of valence electrons (ve-) • Number of octet electrons (oe-) • Number of bonds = [(oe-) – (ve-)]/2 • Draw LDS!

  5. Try these! Write in notes! • Se2 • CS2 • CH2Cl2 • Ge2H4 • OS • C2Br6 • NOBr

  6. The Environment… • In this class, I want you to learn the contents of basic chemistry… • However, I also want you to be able to understand the importance of chemistry in the environment. • There is a chemical, DHMO, that is especially ruining our environment in many ways… and something must be done.

  7. Surprise…. • I have some DHMO with me today. • Does anyone want to see it??

  8. Naming Covalent Compounds

  9. Naming Ionic Compounds • A compound made from Lithium and Oxygen. • How do we know if it is ionic or covalent? • Metals and non-metals make ionic compounds.

  10. Ion: Li Ion: O Ionic Bond Li O

  11. Ion: Li Ion: O Ionic Bond Li1+ O2-

  12. Ion: Li Ion: O Ionic Bond Li1+ O2-

  13. Ion: Li Ion: O Ionic Bond Li2O

  14. Bohr Model: Li Bohr Model: O Ionic Bond

  15. Bohr Model: Li Bohr Model: O Ionic Bond

  16. Bohr Model: Li Bohr Model: O Ionic Bond

  17. Bohr Model: Li Bohr Model: O Ionic Bond

  18. Bohr Model: Li Bohr Model: O Ionic Bond

  19. MgO Naming Ionic Compounds

  20. MgO Magnesium Oxide Naming Ionic Compounds

  21. CaCl2 Naming Ionic Compounds

  22. CaCl2 Calcium Chloride Naming Ionic Compounds

  23. Al2O3 Naming Ionic Compounds

  24. Al2O3 Aluminum Oxide Naming Ionic Compounds

  25. Naming covalent compounds • No Kriss Krossing! • I will provide you with the compound’s formula. • However, naming will be a tiny bit more difficult. • In your notes, do this first example with me.

  26. PCl3 Naming Covalent Compounds

  27. How do we know if this is a covalent compound? • Is it between a metal and a nonmetal? • NO!!! Then, it is not ionic. • Is it between a nonmetal and a nonmetal? • YES!!! Then, it is covalent!

  28. Rule 1: If the first element has more than one atom, give it a prefix. Naming Covalent Compounds

  29. 1 – mono- 2 – di- 3 – tri- 4 – tetra- 5 – penta- 6 – hexa- 7 – hepta- 8 – octa- 9 – nona- 10 – deca- Naming Covalent Compounds

  30. PCl3 Naming Covalent Compounds

  31. PCl3 Phosphorous Naming Covalent Compounds

  32. Rule 2: The second element always gets a prefix, uses the root of the word and ends in -ide. Naming Covalent Compounds

  33. PCl3 Phosphorous Naming Covalent Compounds

  34. PCl3 Phosphorous Trichloride Naming Covalent Compounds

  35. Rule 3: The “o” or “a” at the end of the prefix is dropped if the element begins in a vowel. Naming Covalent Compounds

  36. N2O Naming Covalent Compounds

  37. Rule 1: If the first element has more than one atom, give it a prefix. Naming Covalent Compounds

  38. N2O Dinitrogen Naming Covalent Compounds

  39. Rule 2: The second element always gets a prefix, uses the root of the word and ends in -ide. Naming Covalent Compounds

  40. N2O Dinitrogen Monooxide Naming Covalent Compounds

  41. Rule 3: The “o” or “a” at the end of the prefix is dropped if the element begins in a vowel. Naming Covalent Compounds

  42. N2O Dinitrogen Monooxide Naming Covalent Compounds

  43. N2O Dinitrogen Monoxide Naming Covalent Compounds

  44. Practice Time! EXAMPLES • CCl4 • As2O

  45. Whiteboards SO

  46. Sulfur Monoxide

  47. NO2

  48. Nitrogen Dioxide

  49. N2O

  50. Dinitrogen Monoxide

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