FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA
FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA
15th Edition
ISBN: 9781119797807
Author: Hein
Publisher: WILEY
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Chapter 3, Problem 19PE

(a)

Interpretation Introduction

Interpretation:

The given diagram has to be classified as a mixture, an element or a compound.

The given diagram is,

FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA, Chapter 3, Problem 19PE , additional homework tip  1

Figure 1

Concept Introduction:

Matter can be classified into two type’s namely pure substance and mixture.

Pure substance:  A single component that has a constant composition, irrespective of the sample size and the sample origin is called as pure substance.  A pure substance could not be broken down to other pure substances by any physical change.

Example:  Water, sugar etc.

A pure substance can be classified into an element and a compound.

Element:  A pure substance, which cannot be broken down into smaller substances by a chemical reaction is called as an element.

Example:  Hydrogen gas, Magnesium ribbon and copper wire etc.

Compound:  A pure substance that is formed by combination of two or more elements by chemical process is called as a compound.  Example:  Sodium chloride is a compound because it is formed from elements sodium and chlorine.

Mixture:  A mixture consists of more than one substance and the composition of a mixture is dependent on the sample.  The separation of mixture into its components can be done by physical changes.

(b)

Interpretation Introduction

Interpretation:

The given diagram has to be classified as a mixture, an element or a compound.

The given diagram is,

FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA, Chapter 3, Problem 19PE , additional homework tip  2

Figure 2

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The given diagram has to be classified as a mixture, an element or a compound.

The given diagram is,

FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA, Chapter 3, Problem 19PE , additional homework tip  3

Figure 3

Concept Introduction:

Refer to part (a).

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