2.  Remember:
 1) saturated- all single covalent bonds and
carbon bonded to 4 atoms
 2) CnH2n+2

3. # of Name Molecular
Carbons Formula
1. METHANE CH4
2. ETHANE C2H6
3. PROPANE C3H8
4. BUTANE C4H10
5. PENTANE C5H12
6. HEXANE C6H14
7. HEPTANE C7H16
8. OCTANE C8H18
9. NONANE C9H20
10. DECANE C10H22

4.  All carbons in a row
 Which is the straight chain form of
butane?

5.  All the carbons are not in a row.
 Which is the branched-chain for of
butane?

6.  Molecules with the same molecular
formulas but different arrangement of
atoms.
 Must have at least 4 carbons