Naming Alkenes and Alkynes

Question 1

Rule 1 in naming alkenes and alkynes

Answer 1

• The main chain must include the double bond
• Even if it’s not the longest chain

Question 2

Rule 2 in naming alkenes and alkynes

Answer 2

Number the main chain from the end that is closest to the double bond

Question 3

Rule 3 in naming alkenes and alkynes

Answer 3

Suffix is -ene or -yne

Question 4

Cis Bonds

Answer 4

If the two same groups lie on the same side of the double bond

Question 5

Trans Bonds

Answer 5

If the two same groups lie on opposite sides of the double bond

Question 6

Naming triple bonds (alkynes)

Answer 6

• Same rule as double bonds
• Use suffix -yne

Question 7

Another name for compounds with double bonds

Answer 7

Alkenes

Question 8

Another name for compounds with triple bonds

Answer 8

Alkynes