FLOATING AN

EGG USING SALT

DESIRAE BAKER

8TH GRADE

ENTERPRISE MIDDLE SCHOOL

� Egg yolks and whole eggs store significant amounts of protein and chlorine and are widely used in cooking. Chickens and other egg-laying creatures are widely kept throughout the world, and mass production of chicken eggs is a global industry.

�How much salt do I need to float an egg in water?

�If I add enough salt, then the egg will float to the top because the density of the water will have increased.

1. Get materials ready for the experiment.

2. Pour 300 mL of water into clear plastic cup.

3. Dissolve chosen amount of salt into the water.

4. Slowly put the egg into the water, watching to see if it will float.

5. Record results

6. Repeat steps one through six 2-3 times to see if the egg will float using different amounts of water and salt.

Volume of water

(mL)

Weigh

t of

salt (g) Observation

300 12g No float

300 21g No float

300 42g Float

Volume of

water

Weight of

salt (g)

Observatio

n

2,000 41 No float

2,000 97 No float

2,000 202 No float

2,000 274 No float

2,000 387 Float

Volume of

water (mL)

Weight of

salt (g) Observation

1,000 25 No Float

1,000 43 No Float

1,000 67 No Float

1,000 85 Float

Volume of

water (mL)

Weight of

salt (g) Observation

3,000 96 No float

3,000 151 No float

3,000 320 Float

�As the amount of salt added to the beaker

increased, the egg floated more.

� I predicted that if I added enough salt,

the egg would float. My hypothesis was

correct.

� It took a lot more salt for the egg to float

when there were 3L of water.

� In conclusion, the less water you have and

the more salt you add, the more the egg

will float.

� http://www.sciencekids.co.nz/experiments/floatingeggs.html,

� http://www.sciencebuddies.org/science-fair-projects/project_ideas.shtml,

� http://www.sciencehound.com/science_project_community/node/7206,

� http://www.ehow.com/way_5692384_egg-flotation-science-project-procedures.html

� http://www.stevespanglerscience.com/experiment/amazing-egg