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IB Chemistry HL 3.3.1 Radicals Questions

Use real HL exam questions to identify radical species, explain their high reactivity and connect radical quenching to oxidative contexts.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Recognize radical notation and identify the unpaired electron in a radical species.
  • Relate an unpaired electron to the high reactivity of radicals, distinguish radicals from ions or stable molecules and explain radical quenching in oxidative contexts.

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Study 3.3.1—Radicals conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 3.3.1 Radicals Questions question 1

[Maximum number: 2]

The Sun's energy is produced by the fusion of hydrogen nuclei.

Nuclear energy produces ionizing radiation which leads to the formation of free radicals.

Explain why free radicals are harmful to living cells.

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