1. a) 3-ethylpentane
b) 2,4-dimethylhexane
c) 2-methylpropane
d) 2,3,6-trimethyloctane
2. a) CH₃CH₂CH(CH₂CH₃)CH₂CH₃ (condensed); complete and expanded diagrams follow standard structural conventions for 3-ethylpentane.
b) CH₃CH₂C(CH₃)(CH₂CH₃)CH(CH₃)CH₂CH₂CH₂CH₃ (condensed); complete and expanded diagrams follow standard structural conventions for 3-ethyl-4,5-dipropyloctane.
c) CH₃(CH₂)₇CH₃ (condensed); complete and expanded diagrams follow standard structural conventions for nonane.
d) CH₃C(CH₃)₂CH₂CH(CH₃)CH₃ (condensed); complete and expanded diagrams follow standard structural conventions for 2,2,5-trimethylheptane.
3. a) propene
b) 1,3-pentadiene
c) 2-methyl-2-hexene
d) 4,5-dimethyl-2-heptene
4. a) CH₃C(CH₃)=C(CH₃)CH₂CH₂CH₃ (condensed); complete and expanded diagrams follow standard structural conventions for 2,5-dimethyl-2-hexene.
b) CH₃CH=CH₂ (condensed); complete and expanded diagrams follow standard structural conventions for propene.
c) CH₃CH=CHCH₃ (condensed); complete and expanded diagrams follow standard structural conventions for methylpropene (common name: isobutylene).
d) CH₃CH₂C(CH₂CH₃)=C(CH₂CH₂CH₃)CH₂CH₂CH₃ (condensed); complete and expanded diagrams follow standard structural conventions for 5-ethyl-4-propyl-3-octene.
Parent Tip: Review the logic above to help your child master the concept of alkanes alkenes alkynes worksheet.
