Chapter 21, Problem 34A

If you take a bite of hot pizza, the sauce may burn your mouth while the crust, at the same temperature, will not. Explain.

To determine

To Explain: For a bite of hot pizza, the sauce may burn the mouth while the crust at the same temperature will not.

Answer to Problem 34A

Because the specific heat of the liquid is greater than that of the solid hot pizza.

Explanation of Solution

Introduction:

Specific heat is defined as the essential amount of heat neededfor increasing the temperature by 1 unit. Its S.I. unit is $\text{J}\cdot {\text{kg}}^{-1}{\text{K}}^{-1}$ .

Since the specific heat of the liquid is greater than that of the solid,the liquid takes more time to increase or decrease its temperature. That’s why when a person takes a bite of hot pizza, the sauce may burn his mouth, while the crust at the same temperature will not.