You can tell if an egg is bad by doing the floating test.
Place an egg in a bowl of water and if the egg floats the egg is bad and if the egg sinks to the bottom the egg is good.
You can also crack the egg open and if it smells bad then it's of course bad.
When eggs float they are bad but when eggs sink they are good.
This is a good way to tell if an egg is bad or not before cracking it open.
Place an egg in a bowl of water and if the egg floats to the top of the water the egg is bad and should be thrown out.
If the egg sinks to the bottom of the bowl then the egg is good and safe to eat.
An egg or eggs will float if they're not longer fresh and no longer safe to eat.
So if the egg floats to the surface of the water the egg is bad and no longer safe to eat and could make you sick if you do eat it.
A fresh egg will sink to the bottom of the bowl of water which means the egg is very fresh and good to eat.
And if the egg sinks to the bottom and lays flat on it's side the egg is not as fresh as it was before but the egg is still safe to eat.
So that's a very easy and quick way of testing eggs for freshness and making sure the eggs are good and safe to eat.
If the egg floats to the top it's bad and should be thrown out but if the egg sinks then it's good and safe to eat.
Eggs typically last for a few weeks in the fridge before they go bad although some eggs may last longer.
You also can leave eggs at room temperature for a few weeks as well.