Your Name:
Date:
Class:

You have some experience building models of compounds using the

model kit and also some experience drawing pictures of the structures of molecules. Now you will extend those skills to the understanding of how molecules with the same formula can have many different possible structures.

On this page there is a list of several molecular formulas. Your task is to build and draw as many different isomers for each molecular formula as you can. There are some rules about how atoms can be connected that you should remember:

How Atoms Connect
Element	Number of Bonds
C	4
H	1
O	2
N	3
F	1
Cl	1
Br	1
I	1

Above are the two possible isomers of butane.

Build the stated numbers of isomers of each of the following molecular formulas. To earn a 68% on this assignment, build all of them.

• 2 isomers of C₂H₆O
• 3 isomers of C₅H₁₂
• 5 isomers of C₆H₁₄
• 4 isomers of C₃H₉N
• 4 isomers of C₄H₉Cl

For four points each:

• Build isomers of C₇H₁₆ (there are 9 possible isomers)
• Build isomers of C₈H₁₈ (there are 18 possible isomers)

By building 8 extra models you can earn a 100% on this assignment. To get credit for a model, fill in the table on the back of this page with the formula, name (if known), and structure of each compound you build. You must show the completed model to the teacher for credit.

If you find all nine unique isomers of C₇H₁₆ I will give you 15 points extra credit.

If you find all eighteen unique isomers of C₈H₁₈ I will give you 50 points extra credit.