Rusting: an irreversible change
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I can describe rusting as an irreversible change, where a new material is formed.
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Rust is reddish brown in colour and has a rough texture.
Rust is a new material that is formed when iron or steel is exposed to oxygen in the air and water.
Rusting is an irreversible change whereby the original material cannot easily be recovered.
Rusting materials can be looked at closely as they change over time, using observation skills.
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