Soak an egg: soak a raw egg in salt water and you will find that the egg will float. The principle is that the density of salt water is greater than that of eggs, so eggs can float on the water.

Egg rebound: If you gently throw a boiled egg from a height, you will find that it will rebound. The principle is that the gas inside the boiled egg expands to increase its volume and form an elastic sphere.

Egg Drifting: Put a raw egg into a bowl filled with water and add some salt. It is found that the egg will float on the water, because salt can increase the density of water and enhance the buoyancy of water, and the density of the egg is equal to that of salt water, so it can float on the water.

Egg on fire: peel a boiled egg and touch it with a match 1, and you will find that the egg will catch fire like a candle. The combustion principle is that egg white contains protein and nitrogen, which can be burned to produce flame at high temperature.