Chapter 14, Problem 32R

To determine

The temperature at which the solid begins to liquefy.

Answer to Problem 32R

The temperature at which the solid begins to liquefy is known as the melting point of substance.

Explanation of Solution

Introduction:

The measure of degree of hotness or coldness in terms of different scales: Celsius, Kelvin, Fahrenheit can be defined as temperature.

State of matter can be changed due to different values of temperature. Solids can be changed into liquid at a particular temperature called melting point of the substance. Liquids can be changed into gaseous state at a temperature called boiling point of the substance. Similarly, liquids can be changed into solids at a certain temperature called the freezing point of the substance.

Conclusion:

Hence, the temperature when a solid begins to liquefy is melting point.