1. By B.J. Hanson Mr. leingang class 1rst period Science fair project.
What is more corrosive?
By B.J. Hanson
Mr. leingang class 1rst period
Science fair project.

2. Question
Which common household liquid is the most corrosive?

3. Hypothesis
If you put a piece of a hamburger in different liquids, then the coke will dissolve the patty the most, because it is used as a cleaning agent.

4. Variables
Mv: solution (coke, vinegar, bleach, water, salt water, sugar water)
Cv: amount of liquid(2 cups, 1 tablespoon of salt/sugar if sugar/salt water), time in liquid (1 week), time of observation (8:30)
Rv: amount of hamburger dissolved, or change in meat/liquid

5. Materials
• 6 see through cups (or jars) • vinegar • bleach • sugar water (one tablespoon of sugar) • salt water (one tablespoon of salt) • 1 hamburger patty cut into 6 equal pieces •cola (not diet coke)

6. Diagram hamburger hamburger hamburger hamburger hamburger hamburger
Sugar
water
Salt
water
coke
bleach
vinegar
water

7. Procedure
1: Setup see diagram. 2: Wait 1 week: record observations of what is left of the hamburger/how it or the water has changed every day 3: Clean up.

8. Data table Liquid days Cola Bleach Vinegar Water Sugar water
Salt water 1
Partly dissolved
Somewhat bubbly
Expanded
White
Yellow water
Cloudy, no change in meat
Cloudy,
Slightly yellow water 2
More has dissolved
Absurdly bubbly
Very expanded,
White, and
Stringy
Orange water,
Very slightly dissolved
Very cloudy, meat almost completely unchanged
Cloudy, more yellow
water 3
Almost all gone
No change
Top half of water somewhat orange
Orange 4
Completely dissolved 5
Mold 6
mold 7

9. Conclusion
in conclusion, the coke dissolves the hamburger the most. We can prove this because the coke dissolved it COMPLETELY while only the WATER dissolved it a little! That is conclusive data. This supports my original hypothesis. Therefore if you put a piece of hamburger in different liquids then the coke will dissolve them the most.

10. Background information
Bleach has a ph value of
Vinegar has a ph value of 2.4
Water and sugar/salt water all have a ph value of 7
Coke has a ph value of 2.5
A Lower ph means more acidic
The Lowest natural ph value ever is -3.6
A Higher ph means more basic
Phosphoric acid is included in coke but not other sodas
Phosphoric acid has a ph value of 1.8
Caffeine has a ph value of 2. 5