Back to lessons
Physical SciencesGrade 1230 min

Organic Chemistry Worksheet: Alkanes and Isomers

Naming, isomers and organic reactions — the questions that come up every year.

Activity A: Nomenclature

  1. Write the molecular formula of heptane.
  2. Name CH₃-CH₂-CH₂-CH₃.
  3. Draw the structural formula of pentane.

Activity B: Isomers

  1. Draw and name the two isomers of C₅H₁₂.

Activity C: Reactions

  1. Write the balanced equation for the complete combustion of butane.
  2. Write the equation for the substitution of methane with chlorine (first substitution).

Memo

  1. C₇H₁₆ 2. Butane 3. Chain of 5 carbons with single bonds 4. n-pentane and 2-methylbutane 5. 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O 6. CH₄ + Cl₂ → CH₃Cl + HCl (UV light)

Follow along (device voice)

Listen and follow along as each word is spoken

Activity A: Nomenclature 1. Write the molecular formula of heptane. 2. Name CH₃-CH₂-CH₂-CH₃. 3. Draw the structural formula of pentane. Activity B: Isomers 4. Draw and name the two isomers of C₅H₁₂. Activity C: Reactions 5. Write the balanced equation for the complete combustion of butane. 6. Write the equation for the substitution of methane with chlorine first substitution . Memo 1. C₇H₁₆ 2. Butane 3. Chain of 5 carbons with single bonds 4. n-pentane and 2-methylbutane 5. 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O 6. CH₄ + Cl₂ → CH₃Cl + HCl UV light