Chapter 1, Problem 1.31UKC

Classify each example of molecular art as a pure element, a pure compound, or a mixture.

Interpretation Introduction

Interpretation:

The molecular art has to be classified as a pure element, a pure compound or a mixture.

The given molecular art is,

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.

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.

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.

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.

Answer to Problem 1.31UKC

The given molecular art is a pure element.

Explanation of Solution

The given molecular art is,

Figure 1

The molecular art shown above is a pure element because it comprises of only single entity.

Interpretation Introduction

Interpretation:

The molecular art has to be classified as a pure element, a pure compound or a mixture.

The given molecular art is,

Figure 2

Concept Introduction:

Refer to part (a).

Answer to Problem 1.31UKC

The given molecular art is a pure compound.

Explanation of Solution

The given molecular art is,

Figure 2

The given molecular art is a pure compound because it comprises of combination of two elements (one type of molecules).

Interpretation Introduction

Interpretation:

The molecular art has to be classified as a pure element, a pure compound or a mixture.

The given molecular art is,

Figure 3

Concept Introduction:

Refer to part (a).

Answer to Problem 1.31UKC

The given molecular is a mixture.

Explanation of Solution

The given molecular art is,

Figure 3

The molecular art shown above is a mixture because it comprises of more than one component (different types of molecules).

Interpretation Introduction

Interpretation:

The molecular art has to be classified as a pure element, a pure compound or a mixture.

The given molecular art is,

Figure 4

Concept Introduction:

Refer to part (a).

Answer to Problem 1.31UKC

The given molecular art is a mixture.

Explanation of Solution

The given molecular art is,

Figure 4

The molecular art shown above is a mixture because it consists of more than a single component (different types of atoms).