13. Alkenes, Alkynes, and Aromatic Compounds

Write the molecular formula for an alkane with 5 C atoms.

Write the molecular formula for an alkyne with 4 C atoms.

Which of the following molecular formulas might indicate an alkene?

Which of the following is not a valid bond rotation?

What is wrong with the following structures?

CH₃=CHCH₂CH₂OH

There are two things wrong with the following structure. What are they? <IMAGE>

What do the terms saturated and unsaturated mean?

Draw an example of a saturated four carbon compound and an unsaturated four carbon compound.

Are the pairs of compounds shown below the same molecule, isomers, or different molecules? <IMAGE>

Identify the following as alkanes, alkenes, cycloalkenes, or alkynes:

d. <IMAGE>

Identify the following as alkanes, alkenes, cycloalkenes, or alkynes:

a. <IMAGE>

Indicate whether each of the following pairs represent structural isomers or the same molecule:

b. <IMAGE>

Identify the compounds in each of the following pairs as structural isomers or not structural isomers: (11.3)

b. <IMAGE>

Identify the family of hydrocarbon present in the following:

(a) H₃CC≡CH

Identify the family of hydrocarbon present in the following:

(c) <IMAGE>