What happens to the water inside the egg when it is boiled? An egg contains 90% of water. When it is boiled, the water inside it cannot escape as water vapor because of the covering of calcium carbonate shell. After boiling, when the egg becomes solid the water cannot be seen. So what happens to the water inside the egg when it is boiled?
The water present in the egg is a colloidal solution of mainly proteins in water.  On boiling proteins get coagulate. The coagulate proteins absorb water (solvent and it disappear).