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7-CH01

Cleaning Coins

Chemical and Material Sciences
Kira Ward

Grade:
7
Teacher:
Kaci Galigher

"In this science fair project “Cleaning Coins” I conducted an experiment to determine the best solution for cleaning tarnished or oxidized coins. I gathered six different solutions that I thought would work best to clean the coins, and put one type of coin in each different solution and let them sit 24 hours. After the 24 hours were up, I took the coins out and recorded the results."


Project presentation

View Project Presentation file

2 thoughts on “Cleaning Coins

  1. Nice experimental design, and sound logical presentation of your experimental method and results. For future work perhaps consider describing and standardizing your tooth brush cleaning procedure so that how you brush is not a factor in the cleanliness of the coins. Keep up the Excellent Work!

  2. Nice experimental design, and sound logical presentation of your experimental method and results. For future work perhaps consider describing and standardizing your tooth brush cleaning procedure so that how you brush is not a factor in the cleanliness of the coins. Keep up the Excellent Work!

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