Bleck! The penny's still dirty. Baking soda did not clean the penny. Baking soda is a base. Try cleaning the penny with another substance. CLICK on a cup below. Baking Soda Vinegar Lava Soap Lemon Juice Lesson plans. . .
Shaina /shai-na/ [2 sylls.] as a girls' name is pronounced SHAY-nah. It is of Yiddish origin, and the meaning of Shaina is beautiful.
Patina (/ËpÃ¦tÉªnÉ/ or /pÉËtiËnÉ/) is a thin layer that variously forms on the surface of stone; on copper, bronze and similar metals (tarnish produced by oxidation or other chemical processes); on wooden furniture (sheen produced by age, wear, and polishing); or any such acquired change of a surface through age and exposure.