Organic chemistry is the study of carbon-containing compounds.
Compounds that are formed from carbon and hydrogen.
(Natural) occurs
naturally
(Synthetic) man-made
-Willow tree-
SALICINThe 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 compoundSTRUCTURAL 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
IsomersCompounds 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.
Draw the structural formula for all the isomers of C5H12.
Let’s practice!
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!