ATLAS Science Grade 7 Practice Questions - Arkansas ATLAS Science - Grade 7 Exam

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Rust forms when iron reacts with oxygen in the presence of moisture. Rusting is classified as a chemical reaction mainly because:

The iron changes color only temporarily A new substance with different properties forms from the iron and oxygen The iron simply melts into a liquid Water freezes on the metal surface

Correct Answer:

A new substance with different properties forms from the iron and oxygen

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