Shining a Penny

Shining a Penny book cover — contents of table Asking Questions 4 Science Fun 8 Glossary Index 24 Science Notes Shining a Penny explores chemical reactions In this experiment old pennies are dipped in three different solutions and compared The copper oxide on old pennies dissolves best in an acidic mixture of salt and vinegar resulting in a shiny penny 3

Shining a Penny — page 1 — questions asking Look at all these pennies They are all the same But they look different 4

Shining a Penny — page 2

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