Do eggs get lighter or heavier if they have a chick in them?

Answer 1

Neither. An egg would stay the same weight. This can be explained through the following.. You have two identical containers. You fill both with exactly the same amount of water. You place one of them in the freezer. After the water is frozen, which weighs more? Neither would, as they both have the exact same amount of mass.

If you had two identical eggs, and one had a chick in it, the other did not.. There is no way for extra mass to permeate the shell while the chick develops. And thus it has the same amount of mass that an egg without a chick does. The only difference is that the mass has been rearranged into the makings of a chick.

If that still doesn't quite make sense to you, think of LEGO. One bucket has thirty pieces, and the other bucket has thirty pieces. The pieces are identical, but in one of the buckets the pieces are assembled into a house. Just because they have formed something does not mean they are heavier, or lighter. Both are the same weight.

Answer 2

No. Just the opposite occurs as a matter of fact. As the chick develops the egg will become lighter. The egg will usually reach a 12% reduction in weight prior to hatch. Moisture is used up and the air sac within the egg becomes larger just before the chick begins to emerge.

Answer 3

Yes