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IB Chemistry SL 2.1.1 Chemical Equations Questions

Use real SL exam questions to write balanced equations, choose products and verify atom conservation for the stated reaction.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Write and balance chemical equations for named reactions with correct molecular formulas, stoichiometric coefficients and state symbols.
  • Use reaction context to select the appropriate products and coefficients, including ionic equations where the stated transformation requires them.
  • Check atom conservation and distinguish the equation for the stated chemical transformation from a related but different process.

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Study 2.1.1—Chemical equations conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry SL 2.1.1 Chemical Equations Questions question 1

[Maximum number: 1]

Iron may be extracted from iron (II) sulfide, FeS.

The first step in the extraction of iron from iron (II) sulfide is to roast it in air to form iron (III) oxide and sulfur dioxide.

Write the equation for this reaction.

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