Naming Alkynes Worksheet

A Grade 10 Science worksheet covering the IUPAC nomenclature of alkynes, including identifying parent chains, numbering, naming substituents, and drawing structures from names.

Grade 10 Science ChemistryAlkenes and AlkynesNaming Alkynes

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Includes

Multiple ChoiceFill in the Blanks2 Short AnswerTrue / False

Standards

HS-PS1-2

Topics

chemistryalkynesnomenclatureorganic chemistrygrade 10

7 sections · Free to use · Printable

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Naming Alkynes

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Read each question carefully and follow the IUPAC rules for naming alkynes. Provide systematic names or draw structures as requested.

1. What is the suffix used to denote an alkyne in IUPAC nomenclature?

-ane

-ene

-yne

-ol

2. What is the parent chain for the following alkyne: CH₃-CH₂-C≡C-CH(CH₃)-CH₃?

Pentane

Hexane

Hexyne

Heptyne

3. The triple bond in an alkyne is composed of one sigma bond and two bonds.

4. When numbering the carbon chain of an alkyne, the triple bond should be given the possible number.

5. A substituent group containing two carbon atoms is called an group.

6. Give the IUPAC name for the following compound: CH₃-C≡C-CH₂-CH₃

7. Give the IUPAC name for the following compound: CH₃-CH(CH₃)-C≡C-CH₃

8. Draw the condensed structural formula for 3-hexyne.

9. Draw the condensed structural formula for 4-methyl-1-pentyne.

10. The longest carbon chain containing the triple bond is always the parent chain.

True

False

11. If there are multiple triple bonds, the compound is named as a diyne, triyne, etc.

True

False