Chapter 2.3, Problem 6RQ

(a)

Interpretation Introduction

Interpretation: Sand needs to be classified as homogeneous or heterogeneous mixture.

Concept Introduction: Practically all of the matter in environment consists of mixtures of different substance. For example, soil; it has many forms of components, air; it has mixture of many gases, etc.

Answer to Problem 6RQ

Sand is classified as heterogeneous mixture.

Explanation of Solution

The mixture present with a single phase is known as homogeneous and having two or more than two phases is heterogeneous mixture. A uniform phase of a mixture is termed as homogeneous mixture. In the homogeneous mixture only similar type of substance are present in a single phase, and they cannot be separate easily.

Sand contains different particles. Also, sand does not have the same composition, properties,and appearance throughout the mixture. So, it is heterogeneous mixture.

(b)

Interpretation Introduction

Interpretation: Store-bought milk needs to be classified as homogeneous or heterogeneous mixture.

Concept Introduction: Practically all of the matter in environment consists of mixtures of different substance. For example, soil; it has many forms of components, air; it has mixture of many gases, etc.

Answer to Problem 6RQ

Store-bought milk is classified as homogeneous mixture.

Explanation of Solution

The mixture present with a single phase is known as homogeneous and having two or more than two phases is heterogeneous mixture. A uniform phase of a mixture is termed as homogeneous mixture. In the homogeneous mixture only similar type of substance are present in a single phase, and they cannot be separate easily.

Stored-bought milk has a uniform composition throughout, and this uniform composition does not separate by the physical method. So, it is homogeneous mixture.

(c)

Interpretation Introduction

Interpretation: Chocolate chip cookie dough needs to be classified as homogeneous or heterogeneous mixture.

Concept Introduction: Practically all of the matter in environment consists of mixtures of different substance. For example, soil; it has many forms of components, air; it has mixture of many gases, etc.

Answer to Problem 6RQ

Chocolate chip cookie dough is classified as heterogeneous mixture.

Explanation of Solution

The mixture present with a single phase is known as homogeneous and having two or more than two phases is heterogeneous mixture. A uniform phase of a mixture is known as homogeneous mixture. In the homogeneous mixture only similar type of substance are present in a single phase, and they cannot be separate easily.

Chocolate chip cookie dough is a kind of mixture in which the different parts are not consistently mixed and also a person can pull out the sperate parts from it. So, it is heterogeneous mixture.

(d)

Interpretation Introduction

Interpretation:

Pizza needs to be classified as homogeneous or heterogeneous mixture.

Concept Introduction: Practically all of the matter in environment consists of mixtures of different substance. For example, soil; it has many forms of components, air; it has mixture of many gases, etc.

Answer to Problem 6RQ

Pizza is classified as heterogeneous mixture.

Explanation of Solution

The mixture present with a single phase is known as homogeneous and having two or more than two phases is heterogeneous mixture. A uniform phase of a mixture is known as homogeneous mixture. In the homogeneous mixture only similar type of substance are present in a single phase, and they cannot be separate easily.

Pizza is a kind of mixture in which the different parts are not consistently mixed and also a person can pull out the sperate parts from it. So, it is heterogeneous mixture.