Which of the following is a secondary amine?

What is the common name for the amine with the structure ${\mathrm{CH}}_3{\mathrm{CH}}_3\mathrm{NH}$?

Given the structure ${\mathrm{CH}}_3-\mathrm{NH}-{\mathrm{CH}}_3$, how would you classify this amine?

Which of the following best represents the structure of 1,4-hexanediamine?

Draw condensed and skeletal structures for each of the following amines:

b. N-ethylethanamine

What is each compound's systematic name?

c.

Give a systematic name and a common name (if it has one) for each of the following amines and indicate whether each is a primary, secondary, or tertiary amine:

c.

d.

Give a systematic name and a common name (if it has one) for each of the following amines and indicate whether each is a primary, secondary, or tertiary amine:

a.

b.