Chapter 9, Problem 40QAP

Interpretation Introduction

(a)

Interpretation:

A solid that can dissolve in water and melts below 100° C needs to be classified as metallic, network covalent, ionic or molecular.

Concept introduction:

Solids in which constituent particles are covalent molecules which are held together by weak intermolecular forces are called molecular solids.

Interpretation Introduction

(b)

Interpretation:

A solid which conducts electricity only when melted needs to be classified as metallic, network covalent, ionic or molecular.

Concept introduction:

Ionic solids consist of cations and anions. They are held together by strong electrostatic forces between cations and anions.

Interpretation Introduction

(c)

Interpretation:

A solid that is insoluble in water and conducts electricity needs to be classified as metallic, network covalent, ionic or molecular.

Concept introduction:

Metals, in which the structural units are electrons and cations, which may have charges of +1, +2 or +3.