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Is cleaning a penny with vinegar and salt a physical or chemical change?
Wiki User
∙ 13y ago
It is a chemical reaction and this is the correct way to spell penny!
Wiki User
∙ 13y ago
Cleaning a penny with vinegar and salt is a chemical change. The vinegar (acetic acid) reacts with the salt (sodium chloride) to form a chemical compound that removes the tarnish on the copper surface of the penny. This reaction changes the composition of the penny's surface, making it appear shiny and clean.
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