Assignment C: Technical Presentation

1. Determine what salt
concentration will float an egg.
ｓ１２３０２２４ Wataru Yabe
http://www.sciencebuddies.org/science-fair-
projects/project_ideas/OceanSci_p003.shtml#background

2. Introduction
• egg sinks into the water
•float egg by salt

3. Equation 1
p=m/v

4. Equation 1
ρ = Density in whatever units are used for mass and volume.
m = Mass in grams (g), kilograms (kg), or any other unit of
weight.
v = Volume in centimeters cubed (cm3), meters cubed (m3), or
any other unit of volume

5. Equation 2
newconcentration=volumeofstock/(volumeofstock
+volumeofwater)

6. Materials and Equipment (1)
•Eggs (5)
•Permanent marker

7. Materials and Equipment (2)
•Table salt (1 cup)
•Water

8. Materials and Equipment (3)
•Measuring cup, liquid
•Large container, such as a large bowl or cooking pot.
Must be able to hold at least five cups.
•Spoon for stirring

9. Materials and Equipment (4)
•Bag of clear 16-oz. plastic cups
•Soup spoon for egg transfer
•Lab notebook

10. Procedure(1)
•mark five eggs with a marker
•warm to room temperature

11. Procedure(2)
•pour 3 cups of water into your large
container
•add 1 cup of salt

12. Procedure(3)
•stir to dissolve some of the salt
•add 2 more cups of water
•stir to dissolve the rest of the salt

13. Procedure(4)
•Make a two-fold serial dilution of the stock
solution
• test an egg in each solution to see if it will float

14. Procedure(5)
•All five eggs perform
Procedure(1)~Procedure(4)

15. Procedure(6) & Summary
•Plot the densities for all five eggs on a
chart, putting the egg's number on the x-
axis and its density on the y-axis.