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Learning objective

Explain that isotopes are variations of the same element characterized by having identical proton counts but differing neutron counts.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE ChemistryAtoms, elements and compoundsCore content

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Quick explanation

Explain that isotopes are variations of the same element characterized by having identical proton counts but differing neutron counts

  • This point belongs to Isotopes, especially Isotopes outcomes.
  • You need to be able to explain that isotopes are variations of the same element characterized by having identical proton counts but differing neutron counts.
  • The key ideas to know are Define and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineExplain

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This objective helps connect Isotopes outcomes to exam-style questions, flashcards, and revision notes for Isotopes.

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Paper 3 structured question: Isotopes

Paper 3Theory (Core)1 marks

Description

Understanding Isotopes

Isotopes are variations of the same element characterized by having identical proton counts but differing neutron counts. For example, Carbon-12 and Carbon-14 are isotopes of carbon.

  1. a

    State the definition of an isotope.

    Aim for approximately 1 distinct marking point.

    [1]
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