Yellow+Group

** Rusty Problem **

 * Question **


 * What type of liquid will cause a penny, a nail, a paper clip and a sewing needle to rust the fastest? **


 * PROCEDURE **
 * 1. Count out 4 pennies, 4 cups, 4 needles, 4 paper clips, and 4 nails. **
 * 2. Fill your cups with oil, milk, juice, and water. **
 * 3. Then put each metal item in each of the cups. **
 * 4. Take the metal object out after each day to check for rust. **
 * 5. Repeat until rust shows up in one of the cups. **

RESULTS [[image:liquid_rust_chart.jpg width="400" height="300"]]
We found out after 2 days, that the paperclip in the juice was full of rust. The water came in 2nd place. The milk didn’t have any rust, but it did clean the penny. The oil did not make the metal rusty at all.

CONCLUSION
. We found out that the juice caused the most rust. Our hypothesis was incorrect. We thought that oil would make the most rust, but water and juice were the only ones to produce rust. The water wasn’t even first place. It wasn’t as rusty as the juice. The only thing the milk did was clean the penny. The oil just kept it the same.