1. Topic :Intro to Organic Chemistry – hydrocarbons Do Now: read p.1 – amazing carbon

2. Organic chemistry = carbon compounds (except oxides, carbides (C + element that is less electronegative), & carbonates)

3. Bonding Capacity H can form only 1 bond The halogens (F, Cl, Br, I) form only 1 bond O and S like to form 2 bonds N and P form 3 bonds C form 4 bonds

4. Why so many C compounds? Carbon atoms can bond with other carbon atoms in chains, rings, and networks covalent Bonds are covalent

5. Lewis Diagram of C C Carbon has 4 unpaired electrons so it can form 4 covalent bonds

6. Chemical Formulas show kind & # of atoms CH 2 Cl 2 CH 4 CH 3 OH CH 3 Cl

7. Structural Formulas show kind & # of atoms show bonds 2-D picture

8. Structural Formulas single line (–) represents one pair of electrons (a single bond) double line (=)represents two pairs of electrons (a double bond) ● triple line (  )represents three pairs of electrons (a triple bond)

9. Condensed Structural Formula shows kind & # of atoms shows some structural information, but not all details structural formula: CCC Condensed structural formula: CH 3 CH 2 CH 3

10. We will be looking at 3 Homologous Series of Hydrocarbons Alkanes Alkenes Alkynes Hydrocarbons Hydrocarbons: organic compounds containing only C and H Homologous series = group of compounds with related structures & properties – molecules have fixed, numerical relationship among # of atoms See table Q

11. 3 Homologous Series of HC ’ s -yneC n H 2n-2 Alkynes -eneC n H 2n Alkenes -aneC n H 2n+2 Alkanes EndingGeneral FormulaName of Series Saturated Unsaturated

12. A.C 2 H 2 B.C 2 H 4 C.C 6 H 6 D.C 6 H 14 Which compound belongs to the alkene series? Correct answer = B Alkenes follow the format C n H 2n A & C are C n H n, D is C n H 2n+2

13. A.C 2 H 2, C 2 H 4, C 2 H 6 B.C 2 H 4, C 3 H 4, C 4 H 8 C.C 2 H 4, C 2 H 6, C 3 H 6 D.C 2 H 4, C 3 H 6, C 4 H 8 In which group could the hydrocarbons all belong to the same homologous series? Correct answer = D Members of homologous series all have same relationship between atoms Every compound in set D fits the formula C n H 2n

14. A.Ethene B.Ethyne C.Propene D.Propane Which of the following is a saturated hydrocarbon? Correct answer = D all alkanes are saturated