8. When silver metal comes in contact with sulfur, silver sulfide forms and the silver appear darker. This is a

A. change of form C. change in state B. chemical change D. physical change

When silver metal comes in contact with sulfur, silver sulfide forms and the silver appear darker. This is a

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»B. Chemical change

The metal oxide sometimes reacts with water to make the hydroxide; and carbon dioxide to make the carbonate. It is a chemical change.

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8. When silver metal comes in contact with sulfur, silver sulfide forms and the silver appear darker. This is a, A. change of form C. change in state B. chemical change D. physical change