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IB Chemistry SL 3.3.1 Radicals Questions

Use real SL exam questions to interpret radical dot notation, count electrons and distinguish radicals from ions.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Define a free radical as a neutral molecular entity containing an unpaired electron, and interpret the dot notation in a formula.
  • Distinguish radical species from ions and closed-shell molecules by electron count, charge and their high reactivity.

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

IB Chemistry SL 3.3.1 Radicals Questions question 1

[Maximum number: 1]

Antioxidants are a type of food additive.

Antioxidants such as BHT and 3-BHA prevent the unwanted reactions of free radicals. State what a free radical is.

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