Why does steam produced during boiling feel hotter to touch than boiling water?

Why does steam produced during boiling feel hotter to touch than boiling water?

• A. Steam hotter than water.
• B. Steam condenses to water on contact releasing latent heat.
• C. Steam is hotter due to temperature only.
• D. Water is freezing.

Answer: (B)

The key idea is that heat transfer from steam to your skin includes the energy released when steam changes phase. Steam at the boiling point is at about 100°C, same as boiling water. When steam touches your skin, it doesn’t just stay steam; it condenses into liquid water. That condensation releases a large amount of latent heat—the energy stored in the steam during its vaporization. This burst of energy is transferred to your skin, making the contact feel much hotter than touching boiling water at the same temperature. So the temperature alone isn’t the whole story—the latent heat released during condensation is what makes steam feel hotter.

The key idea is that heat transfer from steam to your skin includes the energy released when steam changes phase. Steam at the boiling point is at about 100°C, same as boiling water. When steam touches your skin, it doesn’t just stay steam; it condenses into liquid water. That condensation releases a large amount of latent heat—the energy stored in the steam during its vaporization. This burst of energy is transferred to your skin, making the contact feel much hotter than touching boiling water at the same temperature. So the temperature alone isn’t the whole story—the latent heat released during condensation is what makes steam feel hotter.