Is a silver spoon tarnishing a chemical change?

A chemical reaction with the silver of flatware, jewelry, or other silver objects can change their beautiful lustrous sheen to a dull, blackened surface. This dark coating is called tarnish. Compounds in the air and in foods can contact silver metal and react to form tarnish.

Explanation:

a phrase is a set of word that make a sense, an expression formed by two or more words.

" teacher´s dictum on the possession of human "

" made a pile practicing "

" lived to an impressive age and dies "

a clause, in a grammar way is a series of words that have a complete meaning.

" was irritated by the persecution of those who called themselves "