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CAIE IGCSE Chemistry 11.5.4 Test to Distinguish Between Saturated Questions

Work through real CAIE IGCSE Chemistry questions to describe bromine-water observations and distinguish unsaturated compounds from saturated hydrocarbons.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • describe the bromine-water test for unsaturation
  • state that aqueous bromine changes from orange, brown or yellow to colourless with an unsaturated compound
  • use the test to distinguish an alkene or other unsaturated compound from a saturated hydrocarbon
  • identify the contrasting no-change result for a saturated hydrocarbon while recognising the observed colour change for reactive ring compounds

CAIE IGCSE Chemistry 11.5.4 Test to Distinguish Between Saturated Questions question 1

[Maximum number: 1]

Which compound rapidly decolourises aqueous bromine?

A

propane

B

propanoic acid

C

propanol

D

propene

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