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Cambridge IGCSE Physics practice

Paper 3 structured question: The nucleus

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3

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1

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Topic

The nucleus

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Paper 3Theory (Core)1 marks

Understanding atomic structure is crucial in physics.

Description

Atomic Structure

An atom consists of protons, neutrons, and electrons. The nucleus contains protons and neutrons, while electrons orbit around the nucleus.

  1. a

    State the definition of proton number.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: The nucleus

Paper 3Theory (Core)2 marks

Description

Nucleon and Proton Numbers

An atom has a nucleon number (A) of 30 and a proton number (Z) of 12. Calculate the number of neutrons in the atom.

  1. a

    Calculate the number of neutrons in the atom.

    Aim for approximately 2 distinct marking points.

    [2]