22 June 2010

Making Pennies Shiny



We tested 4 different methods as outlined on e.how.



1. Ketchup
2. Baking soda and water paste with toothbrush
3. Lemon juice and salt [or vinegar and salt]
4. An eraser





We tried a penny with each method and then tried different combinations. The lemon juice and ketchup both had the most dramatic results. And it was fun to put a penny in the lemon juice right after the baking soda for extra bubbly results.



The eraser was our least favourite.

1 comment:

Trish said...

yeah, not much oomph to that eraser, is there?

what a fun science activity; thanks for sharing it.

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