Why Do Eggs Float?

Answer

Some eggs float in water because of a large air cell that forms when the egg is being laid. As an egg ages, the porous shell allows the air cell to expand, which acts as a buoyancy aid hence the egg floats.
Q&A Related to "Why Do Eggs Float"
Buoyancy of eggs. Eggs shouldn't float in pure H. 2. O. If salt has been added, however, then it is possible. You may not have noticed the salt if it was well dissolved. Adding salt
http://wiki.answers.com/Q/Why_do_eggs_float_in_wat...
Egg shells are slightly porous, so air enters after being laid. As more air enters, it's more
http://www.chacha.com/question/why-do-eggs-float
Density is a measurement of mass in a given volume; you can calculate density mathematically dividing an object's mass by its volume. The higher an object's density, the more mass
http://www.ehow.com/info_8729757_egg-float-add-sal...
Similarly to Karl, I observed this phenomenon in some relatively pristine Alaskan fjords. I think it is unlikely that any kind of oil was present on the surface of the water. If
http://www.quora.com/Why-do-raindrops-float-on-the...
2 Additional Answers
Generally, fresh chicken eggs will lie on the bottom of the bowl of water and not float. If you have an egg that float it is starting to rot and the gas it is producing inside the shell makes it float. You can find more information here: http://whatscookingamerica.net/Eggs/EggsFloat.htm
Eggs float in fresh cold water when they are old because the shell is porous and after time the air pocket in the egg gets bigger and absorbs more air.
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