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Cambridge IGCSE Physics practice

Paper 4 structured question: The atom

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Attempt questionThe atom revisionRevise the key idea

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The atom

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Paper 4Theory (Extended)3 marks

The nuclear model of the atom is supported by experimental evidence.

Description

Evidence from Alpha Particle Scattering

Alpha particles are fired at a thin metal foil. Most pass through, but some are deflected at large angles, indicating a small, dense nucleus.

  1. a

    Explain how the results of the alpha particle scattering experiment support the nuclear model of the atom.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: The atom

Paper 4Theory (Extended)1 marks

Description

Alpha Particle Scattering

In an experiment, alpha particles are directed at a thin sheet of gold. Most particles pass through, but some are deflected at large angles.

  1. a

    State the conclusion that can be drawn from the scattering of alpha particles.

    Aim for approximately 1 distinct marking point.

    [1]