Transcript Removing Rust - Stephanie Marson

Removing Rust
What works better Naval Jelly or Coca-Cola?
Stephanie Marson, 6th grade
Flora Macdonald Academy
The Problem: Rust
In science, rust is called oxidation.
Rust is appears when oxygen, a gas, comes
into contact with metal over a long period
of time.
Rust weakens metal.
Found at: http://www.widegeek.com/what-is-rust.htm (January 20, 2007)
Research Question
What removes rust better:
Naval Jelly or Coca-Cola?
Background: How I
Got the Idea
Hypothesis
Naval Jelly removes
rust better than
Coca-Cola.
Steps in the Experiment
A rusty pipe from Dale Miller, the plumber.
 Cutting the pipe in three pieces.
 Weighing the pipes with Dr. Stout’s
analytic balance.
 Treating the pipes.

– Coke
– Naval Jelly
– Nothing
Results
Table 1
Pipes
Pipe 1
Coke
Pipe 2 Naval
Jelly
Pipe 3
Nothing
Before
Treatment
Weight
74.1467g
59.7007g
81.9318g
After
Treatment
Weight
65.0610g
59.5574g
79.2679g
Weight
Difference
9.0857g
.1433g
2.3039g
Percent
Change
12%
.24%
2.8%
Conclusions
My dad will never drink Coca-Cola again!
 Something went wrong. Moving the pipes
around caused the rust to drop off.
 Scientists must be very careful with their
experiments. Mistakes are easy to make.
 The experiment should have been done in
the same room with the analytic balance.

Acknowledgements




Mr. Dale Miller, the plumber who supplied the pipe
Dr. Stephen M. Marson (my dad), who cut the pipe and
drove me to the University.
Dr. Roland Stout, Chemistry and Physics Department,
who allowed me to use his analytic balance to measure
before and after.
Dr. Barbara M. Marson (my mom), who looked over my
paper.
Thanks!