CourseCourseConceptConceptDocsDocuments

CAIE IGCSE Chemistry 11.4.3 In a Substitution Reaction One Atom or Questions

Work through real CAIE IGCSE Chemistry questions to define substitution and classify chlorine reactions by the atom that is replaced.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • define substitution as replacement of one atom or group by another atom or group
  • identify alkane halogenation as substitution when hydrogen is replaced by a halogen
  • classify equations for chlorine reacting with propane, butane or another organic molecule by recognising the replaced atom

CAIE IGCSE Chemistry 11.4.3 In a Substitution Reaction One Atom or Questions question 1

[Maximum number: 1]

The equation for the reaction between butane, C4H10\mathrm{C}_{4} \mathrm{H}_{10}, and chlorine is shown.

C4H10+Cl2→C4H9Cl+HCl\mathrm{C}_{4} \mathrm{H}_{10}+\mathrm{Cl}_{2} \rightarrow \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}+\mathrm{HCl}

Which type of reaction does butane undergo when it reacts with chlorine?

A

addition

B

reduction

C

acid-base

D

substitution

All question bank results loaded