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When silver coins are found in ancient shipwrecks, they are coated with a black crust. Ask a question that could help you determine whether the silver underwent a chemical change or physical change
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When silver coins are found in ancient shipwrecks, they are coated with a black crust. Ask a question that could help you determine whether the silver underwent a chemical change or physical change

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What force most likely caused this, and is it a chemical force or a physical force? The correct answer is chemical by the way.
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