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chemical, e.g. if you have silver, and it tarnishes, the dark spots (the tarnished areas) are actually silver oxide. If it were a physical change, the silver would need to change states of matter. Into gas, liquid or plasma

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Yes, tarnishing is a physical change. It is a surface reaction that alters the appearance of a material without changing its chemical composition.

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10mo ago
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Q: Is tarnishing a physical change
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