A very fresh egg, placed in water, will lie on the bottom. A week-old egg will lie on the bottom but bob slightly. An egg that is around three weeks old will balance on its small end, with the large end up. And a bad egg will float.
Tell if an Egg is Bad--Place egg in bowl of cold water 2 x deeper than egg. Fresh sink to the bottom on their sides. Slightly older lie on the bottom but bob slightly. If egg balances on its small end, w large tip up, it’s appx 3 wks old. Eggs that float on the surface shouldn't be eaten.