Chemistry

1
Chemistry

• Chapter 22
• Hydrocarbons
• Notes 1

2
Organic Chemistry

• Branch of Chemistry
• organic
• Scientists used to think that only animals or
  plants could produce these substances
• Scientists can now create organic compounds in
  labs without any help from plants or animal
  products
• Carbon Chemistry!

3
Hydrocarbons

• Composed of only C and H
• Carbons are all linked together in a Carbon
  Chain
• The Hydrogen's are Terminal Atoms
• Attached to the carbons
• Review parts of nucleus
• How many bonds can carbon make?
• Hydrogen?
• Type of bond between 2 Cs, 2 Hs, or C H?

4
Representing Molecules
Structural/ Lewis Formula

• Molecular Formula
• Ex. CH4
• Ex. H2O

Ball Stick Model
Space Filling Model
5
Alkanes

• Hydrocarbons where all Cs are making bonds with
  4 other atoms
• Saturated Hydrocarbons
• Ea. C is bonded to max of atoms
• Molecular Formula for Alkanes
• CnH2n 2
• n the of Cs in the chain

6
Alkanes

• Prefixes
• 1. Meth-
• 2. Eth-
• 3. Prop-
• 4. But-
• 5. Pent-
• Page 700.

• 6. Hex-
• 7. Hept-
• 8. Oct-
• 9. Non-
• 10. Dec-

7
Alkanes

• Straight Chain Alkanes
• Each C is only bonded to one or 2 other Cs
• Put pencil down and draw a line through it
• Examples

8
Alkanes

• Branched Chain Alkanes
• At least one C is bonded to at least 3 other Cs
• Also called ISOMERS
• Same formula different shape different
  properties
• Naming them
• Longest straight chain (pencil line)
• Name attachments
• Methyl, ethyl, propyl, isopropyletc