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Learning objective

Explain reactions of Period 3 oxides with water.

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Topic

Properties of Period 3 elements and their oxides (A-level only)

Subtopic

Period 3 oxides (A-level only)

Aqa A Level ChemistryInorganic chemistry

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Quick explanation

Explain reactions of Period 3 oxides with water

  • This point belongs to Properties of Period 3 elements and their oxides (A-level only), especially Period 3 oxides (A-level only).
  • You need to be able to explain reactions of Period 3 oxides with water.
  • The key ideas to know are Period 3 oxide.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Period 3 oxide

Why it matters

This objective helps connect Period 3 oxides (A-level only) to exam-style questions, flashcards, and revision notes for Properties of Period 3 elements and their oxides (A-level only).

Quick student answer

Which of the following Period 3 oxides reacts with water to form a strong acid?

Direct answer

SO3 reacts with water to form sulfuric acid (H2SO4), a strong acid.

Key terms

  • Acidic oxide: An oxide that reacts with water to form an acid or reacts with bases to form salts.
  • Basic oxide: An oxide that reacts with acids to form salts and water.

Common trap

Confusing acidic and basic oxides: Always analyze the reaction of the oxide with water to determine its nature.

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