rust formation of 4 metals in 4 liquids (2024)

Moderators: AmyCowen, kgudger, bfinio, MadelineB, Moderators

Print view

4 posts• Page 1 of 1

lynnazuma: Posts: 2; Joined: Sat Jan 10, 2015 12:11 pm; Occupation: student: 5th grade; Project Question: rust formation in 4 different liquids with 4 different objects; Project Due Date: january 19; Project Status: I am conducting my experiment

rust formation of 4 metals in 4 liquids

Postby lynnazuma » Sat Jan 10, 2015 12:47 pm

I am working on my science fair project - the formation of rust on 4 objects - safety pin, nail, piece of tin, and 1/2 chain link - in 4 liquids - water, salt water, bleach water and vinegar water. the rust formed the fastest in bleach water, then normal water, and then salt water. i don't see any rust in the vinegar water after 14 days. i don't know why not. can you help me explain this, please.
thanks.
miles - 5th grade

Top

Re: rust formation of 4 metals in 4 liquids

Postby kgudger » Mon Jan 12, 2015 7:58 am

Hello and welcome to the forums

I don't know why you saw the results you did, but it sounds like you might have only used one item for each experiment. If so, this could just be experimental error or variability. You will have better results if you try more objects - at least 10 per experiment.

Keith

Top

lynnazuma: Posts: 2; Joined: Sat Jan 10, 2015 12:11 pm; Occupation: student: 5th grade; Project Question: rust formation in 4 different liquids with 4 different objects; Project Due Date: january 19; Project Status: I am conducting my experiment

Re: rust formation of 4 metals in 4 liquids

Postby lynnazuma » Fri Jan 16, 2015 6:28 pm

Thanks for the response.

Top

bradleyshanrock-solberg: Former Expert; Posts: 260; Joined: Thu Aug 25, 2005 7:44 am; Occupation: Software Engineer/QA Lead - Quality, Risk Assessment, Statistics, Problem Solving; Project Question: BS Caltech Engineering & Applied Science (Mechanical Engineering, Materials Science)
Research in Traffic and Ceramic Composites
25 years doing IT, various roles, for multinational manufacturing company; Project Due Date: n/a; Project Status: Not applicable

Re: rust formation of 4 metals in 4 liquids

Postby bradleyshanrock-solberg » Tue Jan 20, 2015 8:02 pm

The likely reason why vinegar water did not produce rust is...vinegar is used to remove rust. It's a common trick. The acetic acid in vinegar reacts with rust and changes it into Iron Acetate, which is water soluble (that means the rust turns into something that can dissolve in water, just like sugar or salt)

Any rust that formed likely dissolved instantly in that kind of environment.

Top

Locked

Print view

4 posts• Page 1 of 1

Return to “Grades K-5: Physical Science”

Jump to