Chapter 3, Problem 12A

(a)

Interpretation Introduction

Interpretation: Whether the given statement is correct or not needs to be determined. Also, the incorrect statement needs to be corrected.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 12A

The given statement is false.

Explanation of Solution

Substance is made up of the similar types of the atoms. A substance which is made entirely from single type of atom, called element.A sample of matter with both definite & constant composition and also distinct chemical properties called a pure substance. A mixture is the combination of similar or dissimilar components. Compound is a substance in which two or more than two different elements are chemically bounded together.

So, the given statement is false and the correct statement is most materials occur as mixtures of compounds.

(b)

Interpretation Introduction

Interpretation: Whether the given statement is correct or not needs to be determined. Also, the incorrect statement needs to be corrected.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 12A

The given statement is false.

Explanation of Solution

Substance is made up of the similar types of the atoms. A substance which is made entirely from single type of atom, called element.A sample of matter with both definite & constant composition and also distinct chemical properties called a pure substance. A mixture is the combination of similar or dissimilar components. Compound is a substance in which two or more than two different elements are chemically bounded together.

So, the given statement is false and the correct statement is compound always contains the same relative number of atoms of its various elements.

(c)

Interpretation Introduction

Interpretation: Whether the given statement is correct or not needs to be determined. Also, the incorrect statement needs to be corrected.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 12A

The given statement is false.

Explanation of Solution

Substance is made up of the similar types of the atoms. A substance which is made entirely from single type of atom, called element.A sample of matter with both definite & constant composition and also distinct chemical properties called a pure substance. Atoms combine and act as a unit, called molecules. A compound is a molecule that has at least $2$ different elements.

So, the given statement is false and the correct statement is molecules are made up of atoms.