Chapter 1, Problem 1.5P

(a)

Interpretation Introduction

Interpretation:

Definition of physical and chemical properties is to be stated. Also, the type of change that occurs when the electric current is passed through molten magnesium chloride to yield molten magnesium and gaseous chlorine is to be determined.

Concept introduction:

The physical change can be represented as follows:

The representation of chemical change is as follows:

(b)

Interpretation Introduction

Interpretation:

Definition of physical and chemical properties is to be stated. Also, the type of change that occurs when iron in discarded automobiles slowly forms reddish brown, crumbly rust is to be determined.

Concept introduction:

The physical change can be represented as follows:

The representation of chemical change is as follows: