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Learning objective

Define acids as substances that donate protons and bases as substances that accept protons.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE ChemistryAcids, bases and saltsSupplement content

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Quick explanation

Define acids as substances that donate protons and bases as substances that accept protons

  • This point belongs to The characteristic properties of acids and bases, especially The characteristic properties of acids and bases outcomes.
  • You need to be able to define acids as substances that donate protons and bases as substances that accept protons.
  • The key ideas to know are Define.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Define

Why it matters

This objective helps connect The characteristic properties of acids and bases outcomes to exam-style questions, flashcards, and revision notes for The characteristic properties of acids and bases.

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Paper 4 structured question: The characteristic properties of acids and bases

Paper 4Theory (Extended)1 marks

Description

Acids and Bases

Acids are substances that donate protons, while bases are substances that accept protons. This interaction is crucial in many chemical reactions.

  1. a

    State the definition of an acid.

    Aim for approximately 1 distinct marking point.

    [1]
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