Organic compounds are compounds formed from carbon atoms, the most abundant element on earth. A carbon atom has four (4) valence electrons. A carbon atom always form four (4) nonpolar covalent bonds. This characteristic allows carbon atoms to form multiple bonds of chains and rings. This versatility allows organic compounds to polymerize or join its smaller monomer units to form larger molecules of polymers.



  1. Make a model of Methane, CH4, and sketch the model.
  2. Make a model of Ethane, C2H6, and sketch the model.
  3. Make a model of Propane, C3H8, and sketch the model.
  4. Make a model of Butane, C4H10, and sketch the model.
  5. Make a model of Hexane, C6H14.
  6. Remove two hydrogen atoms, one from each end, from the Hexane model so that the carbon atoms of the end of the chain can join together to form a ring.
  7. Sketch the model of Cyclohexane, C6H12.
  8. Make a model of Ethene, C2H4, and sketch the model.


1. What is the degree of the angle formed by any CH bond in a Methane model? ???
2. What is the name of the shape of a Methane molecule? ???
3. In the Ethane model, what happens when you rotate one of the carbon atoms? What about Propane????
4. Can there be more than one arrangement for the Butane molecule? ???
5. Are there more than one conformations of a Cyclohexane molecule? Explain. ???
6. What is the molecular shape of the Ethene model? Why? ???
*Honors extension
7. What is the correct IUPAC name for the molecule in #4?
8. Do #40 and #46 on pg. 719 in Prentice Hall

How to do this assignment?

Chemistry in March