scotta740
Posts: 17
Joined: Tue Sep 04, 2007 11:03 am

why does salt affect the speed of rust???

Postby scotta740 » Wed Nov 28, 2007 10:23 am

I need to know why does salt affect the speed of rust for my science fair project please. :) :) :)
Scott A.

Craig_Bridge
Former Expert
Posts: 1297
Joined: Mon Oct 16, 2006 11:47 am

Postby Craig_Bridge » Wed Nov 28, 2007 12:51 pm

What grade are you in? Have you had any chemistry yet?

Try doing some research on "cathodic protection". In other words look at what it takes to slow down or prevent the process and see if you can figure it out from that perspective.
-Craig

staryl13
Former Expert
Posts: 404
Joined: Tue Sep 18, 2007 3:27 pm
Occupation: Research Assistant

Postby staryl13 » Wed Nov 28, 2007 3:49 pm

Hi Scott!
Check out the following link- it explains why salt water might induce rusting.
http://www.metalwebnews.com/howto/rust/rust.html
Hope it helped, good luck!
"There is a single light of science, and to brighten it anywhere is to brighten it everywhere." -Isaac Asimov


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