Alkene Nomenclature Worksheet
A Grade 10 Science worksheet focusing on the nomenclature of alkenes, including identifying parent chains, numbering, and naming substituents.
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Alkene Nomenclature Practice
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Date:
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Read each question carefully and provide the correct IUPAC name for the given alkenes or draw the structure from the given name. Remember to identify the longest carbon chain containing the double bond, number the chain to give the double bond the lowest possible number, and name and number any substituents.
1. What is the correct IUPAC name for the following compound?
2,4-dimethylpent-2-ene
2,4-dimethylpent-3-ene
2-methyl-4-methylpent-2-ene
3,4-dimethylpent-2-ene
2. Which of the following is the correct name for the alkene with the formula CH3-CH=CH-CH2-CH3?
pent-1-ene
pent-2-ene
3-pentene
pentene
3. The suffix used for alkenes is .
4. The longest continuous carbon chain containing the double bond is called the chain.
5. When numbering the carbon chain, the double bond should receive the possible number.
6. Draw the condensed structural formula for 3-ethyl-2-methylhex-1-ene.
7. Name the following alkene using IUPAC nomenclature:
8. The double bond in an alkene always takes precedence over alkyl substituents when numbering the carbon chain.
True
False
9. A cyclic alkene is named by adding 'cyclo-' prefix to the name of the corresponding straight-chain alkene.
True
False
Match the term on the left with its definition on the right.
10. Alkene
a. A hydrocarbon containing at least one carbon-carbon double bond.
11. Substituent
b. An atom or group of atoms replacing a hydrogen atom in a hydrocarbon.
12. Parent chain
c. The longest continuous carbon chain in an organic molecule that contains the functional group.
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