Chapter 2, Problem 28A

(a)

Interpretation Introduction

Interpretation: The description below needs to be matched with the given microscopic picture.

Concept Introduction: Matter is something that has mass and volume. Almost everything surrounds us is considered as matter except gas; it is made up of very small particles. The states of matter classify all the substances according to their existence in nature. They are different from each other.

Answer to Problem 28A

Gaseous compound: i, ii, iii and iv.

Explanation of Solution

Microscopic and macroscopic, both are antonyms. A macroscopic world includes anything seen with the naked eye whereas, a microscopic world includes things not seen with the naked eye.

Solid, liquids and gases are all made up of molecules, atoms, and ions. The states of matter classify all the substances according to their existence in nature. They are different from each other.

• Solid: Solid has fixed shape, volume.
• Liquid: Liquid has definite volume bus unfixed shape.
• Gas: Gas has no fixed shape and volume.

The molecular weight of a gaseous compound is a non-variable quantity. According to the question gaseous compound are figure (i), (ii), (iii) and (iv).

(b)

Interpretation Introduction

Interpretation: The description below needs to be matched with the given microscopic picture.

Concept Introduction: Matter is something that has mass and volume. Almost everything surrounds us is considered as matter except gas; it is made up of very small particles. The states of matter classify all the substances according to their existence in nature. They are different from each other.

Answer to Problem 28A

A mixture of two gaseous elements: vi

Explanation of Solution

Microscopic and macroscopic, both are antonyms. A macroscopic world includes anything seen with the naked eye whereas, a microscopic world includes things not seen with the naked eye.

Solid, liquids and gases are all made up of molecules, atoms, and ions. The states of matter classify all the substances according to their existence in nature. They are different from each other.

• Solid: Solid has fixed shape, volume.
• Liquid: Liquid has definite volume bus unfixed shape.
• Gas: Gas has no fixed shape and volume.

The molecular weight of a gaseous compound is a non-variable quantity. Gas is a compound’s state at a particular temperature. Microscopic view of a gaseous mixture containing two elements (argon & nitrogen) and a compound (water). According to the question A mixture of two gaseous elements: figure (vi).

(c)

Interpretation Introduction

Interpretation: The description below needs to be matched with the given microscopic picture.

Concept Introduction: Matter is something that has mass and volume. Almost everything surrounds us is considered as matter except gas; it is made up of very small particles. The states of matter classify all the substances according to their existence in nature. They are different from each other.

Answer to Problem 28A

A solid element: v

Explanation of Solution

Microscopic and macroscopic, both are antonyms. A macroscopic world includes anything seen with the naked eye whereas, a microscopic world includes things not seen with the naked eye.

Solid, liquids and gases are all made up of molecules, atoms, and ions. The states of matter classify all the substances according to their existence in nature. They are different from each other.

• Solid: Solid has fixed shape, volume.
• Liquid: Liquid has definite volume bus unfixed shape.
• Gas: Gas has no fixed shape and volume.

A solid element is a three-dimensional element. A solid element forms gaseous oxide without change in volume. According to the question a solid element: figure (v).

(d)

Interpretation Introduction

Interpretation: The description below needs to be matched with the given microscopic picture.

Concept Introduction: Matter is something that has mass and volume. Almost everything surrounds us is considered as matter except gas; it is made up of very small particles. The states of matter classify all the substances according to their existence in nature. They are different from each other.

Answer to Problem 28A

The answer is: ii

Explanation of Solution

Microscopic and macroscopic, both are antonyms. A macroscopic world includes anything seen with the naked eye whereas, a microscopic world includes things not seen with the naked eye.

Solid, liquids and gases are all made up of molecules, atoms, and ions. The states of matter classify all the substances according to their existence in nature. They are different from each other.

• Solid: Solid has fixed shape, volume.
• Liquid: Liquid has definite volume bus unfixed shape.
• Gas: Gas has no fixed shape and volume.

The molecular weight of a gaseous compound is a non-variable quantity. Gas is a compound’s state at a particular temperature. Microscopic view of a gaseous mixture containing two elements (argon & nitrogen) and a compound (water). According to the question, a mixture of gaseous element and a gaseous compound: figure (ii)