It's easy to distinguish.
A raw egg does not coagulate.
Therefore, it's hard to start spinning and stop.
Look at the movie as follow.
You can see the slow rotation and when I stop the rotation, the egg does not stop immediately.
On the other hand, a boiled egg coagulates.
Let's spin the egg to learn.
You can see the faster rotation and when I stop the rotation, the egg stop immediately.
