Science Buddies: "Ask an Expert"

PLEASE ANSWER SOON THANK YOU
I am doing a project on metal corrosion. I just have a few questions.
1. Why do some metals corrode more than others?
2. When I put copper and brass in saltwater, the water turned blue. Why is that?
3. Also, the most serious change occurred when the metal was a little bit out of the water. Do you know why this is?

Hi,

Here are a couple of links that should help you to answer your questions:

http://www.corrosion-doctors.org/Defini ... rosion.htm
http://www.infoplease.com/cig/science-f ... stest.html

Also, check out the Bibliography section on the following web page - there are several links that should be useful:
https://www.sciencebuddies.org/science- ... p018.shtml

Hope this helps,
Mary

Thank you so much, Mary

If you or anyone you know has anymore information, it would be gladly accepted.

Thank you again