Chapter 12, Problem 13STP

Interpretation Introduction

Interpretation:

The reason for definite shape of solid needs to be explained.

Concept introduction:

Definite shape and volume is the property of solid.

Answer to Problem 13STP

(C) can vibrate only around fixed points.

Explanation of Solution

In solid, these particles are in fixed position and close together to each other. They cannot move from one position to other position in solid. Thus, solid have definite shape and volume. Solid have different properties other than states of matter like liquid and gas. $NaCl$, metal and alloy are the example of solid which show the properties of solid.

Conclusion

In liquid and gases, the particles can change their positions and thus, they don’t have definite shape and volume.