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Cambridge IGCSE Chemistry practice

Paper 3 structured question: Corrosion of metals

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Corrosion of metals

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Paper 3Theory (Core)1 marks

Understanding rust prevention is crucial for maintaining metal structures.

Description

Rust Prevention Techniques

To prevent rust, it is essential to create barriers that protect metal surfaces from moisture and air. Common methods include painting, greasing, and applying plastic coatings.

  1. a

    State two methods to prevent rusting.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Corrosion of metals

Paper 3Theory (Core)1 marks

Description

Methods to Prevent Rust

Rusting can be a significant problem for metal objects exposed to moisture and air. Various methods can be employed to prevent rusting, including painting, greasing, and applying plastic coatings.

  1. a

    State one method to prevent rusting.

    Aim for approximately 1 distinct marking point.

    [1]