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?

a. CH₃=CHCH₂CH₂OH

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

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?

a.

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

d.

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

a.