Which of the following processes is classified as a physical change rather than a chemical change?

A) Tarnishing of silver jewelry when exposed to atmospheric hydrogen sulfide

B) Deposition of gaseous iodine onto a cold surface to form solid crystals

C) Decomposition of water into hydrogen and oxygen gases by electrolysis

D) Rusting of an iron nail exposed to air and moisture

Physical changes and changes of state Knowledge-Based Practice

Chemistry · Matter · Chemistry · Properties & Changes of Matter

1 Chemistry practice questions on Physical changes and changes of state. Questions that assess core concepts and understanding.

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Matter · Chemistry

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