Chapter 7.1, Problem 7.1P

Interpretation Introduction

(a)

Interpretation:

The gaseous, liquid and solid methanol ( $C{H}_{4}O$ ) are to be compared in density.

Concept Introduction:

• Density of any substance is defined as its mass per unit volume.

  $\text{Density=}\frac{\text{Mass}}{\text{Volume}}$

• Volume occupied by gases >Volume occupied by liquids >Volume occupied by solids.

Interpretation Introduction

(b)

Interpretation:

The gaseous, liquid and solid methanol ( $C{H}_{4}O$ ) are to be compared in the space between the molecules.

Concept Introduction:

• The spaces between the molecules of the matter or the compound are known as the intermolecular spaces.

Interpretation Introduction

(c)

The gaseous, liquid and solid methanol ( $C{H}_{4}O$ ) are to be compared in the attractive forces between the molecules.

Concept Introduction:

• The forces of attraction between the molecules are the forces that keep them close or bonded together.