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Learning objective

Identify the relative charges of protons, neutrons, and electrons, which are +1, 0, and -1, respectively.

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

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE PhysicsNuclear physicsCore content

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Quick explanation

Identify the relative charges of protons, neutrons, and electrons, which are +1, 0, and -1, respectively

  • This point belongs to The nucleus, especially The nucleus outcomes.
  • You need to be able to identify the relative charges of protons, neutrons, and electrons, which are +1, 0, and -1, respectively.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

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

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Paper 3 structured question: The nucleus

Paper 3Theory (Core)1 marks

Description

Charges of Subatomic Particles

In an atom, there are three main subatomic particles: protons, neutrons, and electrons. Each has a specific charge.

  1. a

    State the charge of a neutron.

    Aim for approximately 1 distinct marking point.

    [1]
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