Water as ice has a cooling effect,whereas water as steam may cause severe burns. Explain these observations.

(N/A) $1$. Ice at $0^{\circ}C$ has less energy than water at the same temperature because it lacks the latent heat of fusion. When ice comes in contact with the skin,it absorbs heat energy from the body to melt,resulting in a cooling sensation.
$2$. Steam at $100^{\circ}C$ contains more energy than boiling water at the same temperature due to the latent heat of vaporization. When steam touches the skin,it releases this extra latent heat,causing more severe burns compared to boiling water.