1. C4H10 C3H2 CH2 CH2 CH3 C3H2(CH2)2CH3 CONDENSED FORMULA
Indicates the number and type of atoms in
the compound.
C4H10
These two sort of provide
info about the structure
C3H2 CH2 CH2 CH3
C3H2(CH2)2CH3

2. SKELETAL STRUCTURE Carbon atoms are at the ends of each line segment.
We need to add in
missing carbons, lone e- pairs
and hydrogen atoms.
Butane

3. STRUCTURAL FORMULAS H H H H H C C C C H H H H H
This type of representation shows the Lewis
dot structure. H H H H H C C C C H
Butane H H H H

4. BALL AND STICK MODEL Bond Atom
Essentially the same as the structural formula,
however it’s a three-dimensional object.
Bond
Atom

5. PERSPECTIVE DRAWING H H H H H C C C C H H H H H Butane
This type of representation shows the 3-D
VSEPR structure. H H
Butane H H H C C C C H H H H H

6. SPACE-FILLING MODEL Butane
This is the most realistic representation of what
the molecule is “really” like, but these are hard to
draw, and some atoms become “hidden” in the
back.
Butane

7. http://www2. chemistry. msu. edu/faculty/reusch/VirtTxtJml/intro3