Presentation is loading. Please wait.

Presentation is loading. Please wait.

Aim: What is an organic compound? Do Now: what are the key components to organic chemistry? Homework: Text Book Pg 632 – 648 Questions 1-5.

Similar presentations


Presentation on theme: "Aim: What is an organic compound? Do Now: what are the key components to organic chemistry? Homework: Text Book Pg 632 – 648 Questions 1-5."— Presentation transcript:

1 Aim: What is an organic compound? Do Now: what are the key components to organic chemistry? Homework: Text Book Pg 632 – 648 Questions 1-5

2 2 Organic Chemistry Unit IX

3 3 I. Organic Compounds: defined CContains carbon which must have four bonds HHave covalent bonds. HHave low melting points. HHave low boiling points. RReact slowly because of their complex bonding.  May have symmetrical shapes (i.e.: tetrahedral) therefore are soluble in non-polar solvents. FForm large molecules with triple, double and single bonds.

4 4 II. Nomenclature: Naming Organic Compounds Learn to use Table P

5 5 a) Types of Organic Compounds Hydrocarbons any compound that contains carbon and hydrogen 1. Alkanes – hydrocarbons that contains all single bonds among the carbons in any chain -Formula For Alkane C n H 2n+2

6 6 Complete Structural Formulas Show the bonds between each of the atoms H H  H  C  HH C H  H H CH 4, methane

7 7 More Alkanes H H Condensed Structural Formulas H C C HCH 3 CH 3 H HEthane H H H H C C C HCH 3 CH 2 CH 3 H H H Propane

8 8 Alkane Family Name# carbons Structural Formula Methane1 CH 4 Molecular Formula CH 4

9 9 Alkane Family Continued Name# carbons Structural Formula Ethane 2 CH 3 CH 3 Molecular Formula C 2 H 6

10 10 Alkane Family Continued Name# carbons Structural Formula Propane 3 CH 3 CH 2 CH 3 Molecular Formula C 3 H 8

11 11 Other Alkanes Name # carbonsStructural Formula Hexane 6 CH 3 CH 2 CH 2 CH 2 CH 2 CH 3 Heptane 7 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 Octane 8 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 Nonane 9 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 Decane 10 CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3

12 12 Answer the following A. Draw butane? H H H H H C C C C H H H H H B.What is its molecular formula? C 4 H 10

13 13 b) Alkenes – unsaturated hydrocarbons that contain one double bond among the carbons in any chain. NameStructureMolecular Formula Ethene C2H4C2H4 Propene C3H6C3H6 ButeneC4H8

14 14 Answer the Following What is the molecular formula of pentene ? C 5 H 10 Why? H H H H H C= C-C-C- C H H H H H

15 15 c) Alkynes- unsaturated hydrocarbons with one triple bond among the carbons in any chain NameStructureMolecular Formula Ethyne (acetylene C 2 H 2 Propyne C3H4C3H4

16 16 Naming Alkenes and Alkynes When the carbon chain has 4 or more C atoms, number the chain to give the lowest number to the double or triple bond CH 2 =CHCH 2 CH 3 1-butene CH 3 CH=CHCH 3 2-butene CH 3 C  CCH 3 2-butyne

17 17 Using Table Q

18 18 Saturated and Unsaturated Compounds S aturated compounds (alkanes) have the maximum number of hydrogen atoms attached to each carbon atom U nsaturated compounds have fewer hydrogen atoms attached to the carbon chain than alkanes U nsaturated compounds contain double or triple bonds

19 19 Summary of Hydrocarbons Alkanes, Alkenes and Alkynes are members of a homologous series where each successive member has one more carbon and two more hydrogens If you arrange the series in alphabetical order which comes first, second and third ? Alkane – single bonds Alkene – double bond Alkyne – triple bond

20 20 Using the summary and the reference tables answer the following 1. Given CH 4, C 2 H 6, what is the next member ? C 3 H 8 2. Which of the following has a double bond ? C 4 H 10, C 4 H 8 or C 4 H 6 3. Which of the following is Pentyne ? C 5 H 12 C 3 H 4 C 5 H 8 4. Which of the following is a saturated hydrocarbon ? C 5 H 12 C 3 H 4 C 5 H 8 5. Draw 2-butene. C-C=C-C plus the Hs

21 21 Answer the following: What is the formula of Butene ? C 4 H 8 What is the formula of Hexane C 6 H 14 What is the formula of Butyne ? C 4 H 6 Which of the following is an alkene ? C 4 H 10 C 4 H 6 or C 4 H 8

22 22 d) Benzene Series 1. Characteristics: Aromatic hydrocarbon (ring structures) Contains alternating double bonds Displays chemical resonance Highly nonpolar due to the depolarization of shared electron (equally distributed). Formula: C n H 2n-6 Examples: Benzene, Toluene, Napthalene

23 23 Napthalene Benzene Toluene


Download ppt "Aim: What is an organic compound? Do Now: what are the key components to organic chemistry? Homework: Text Book Pg 632 – 648 Questions 1-5."

Similar presentations


Ads by Google