What makes fresh egg to sink and stale egg to float in water

Question

i mean fresh from hen will sink but an egg stayed for some time will float.explain what really happens in an egg for it to float(i need a sciantific explanation)

Answer 1

fresh eggs has no air inside..stale egg may have formed gasses to make them float

Answer 2

I think this may help.

Every egg has a small air pocket in it.

When an egg goes off or is stale, this air pocket increases it's size because of the gasses formed when it goes stale. This causes the egg to float

Good luck

Answer 3

fresh egg has no oxygen in it  but the spoiled egg lets h20 out of the yolk the the h20 drys and there's oxygen in the egg