Question

Match the following vocabulary terms to their definitions.

1. thermal equilibrium
A. a measure of disorder
2. internal energy
B. materials in contact are at the same temperature
3. entropy
C. the quantity of energy that must be absorbed to raise the temperature of a material 1°C
4. specific heat capacity
D. total kinetic and potential energy of the molecules in a object

Answer 1

1. thermal equilibrium . . . . . B. materials in contact are at the same temperature

2. internal energy . . . . . D. total kinetic and potential energy of the molecules in a object

3. entropy . . . . . A. a measure of disorder

4. specific heat capacity . . . . . C. the quantity of energy that must be absorbed to raise the temperature of a material 1°C

Answer 2

1 → B

2 → D

3 → A

4 → C

Explanation :

(1) Thermal equilibrium : It is defined as the material in contact are at the same temperature.

(2) Internal energy : It is defined as the sum of the kinetic energy and the potential energy of the molecule in an object.

(3) Entropy : It is defined as the change in energy with respect to temperature. It also measures the degree of randomness or disorderedness.

(4) Specific heat capacity : It is defined as the energy required to raise the temperature by one unit of one gram of substance.