Organic chemistry
is the study of
carbon-containing
compounds.
Compounds that are formed
from carbon and hydrogen.
(Natural) occurs naturally
(Synthetic) man-made
-Willow treeSALICIN
The model at the bottom right of the
picture shows a close relative of salicin.
Scientists made, or synthesized, this
chemical near the end of the nineteenth
century.
It is called acetyl salicylic acid (ASA). You
probably know it better by its brand name,
Aspirin™.
Origin of Hydrocarbons
Representing Hydrocarbons
MOLECULAR FORMULA
Tells the number of atoms of each
element in a compound
STRUCTURAL FORMULA
Two-dimensional representation of the
structure of a compound. Also called
structural diagram.
Three kinds of
Structural Diagrams
Use the compound C6H14 as
an example.
6 Carbon atoms
14 Hydrogen atoms
First
Second
Third
Isomers
Compounds with same molecular formulas
but different structural formulas. C6H14
for example.
Think of another possible isomer of
C6H14 and draw the complete
structural formula/diagram.
Let’s practice!
Draw the structural formula for all
the isomers of C5H12.
Draw the structural formula for all
the isomers of C3H8.
Draw the structural formula for all
the isomers of C7H16.
Three-Dimensional
Structural Diagrams
The shape of CH4 (Methane) is tetrahedral as
predicted by VSEPR theory and proven by
orbital hybridization.
Our knowledge about VSEPR theory
and orbital hybridization will help us
make three-dimensional models of
isomers.
Classifying Hydrocarbons
Alkanes
3 facts about Alkanes
Properties of Alkanes
Naming Alkanes
Straight-Chain Alkanes
Branched-Chain Alkanes
Name it!
Draw it!