Question 1

Which of the following statements about ionic compounds is NOT true?

Accepted Answer

A)  Ions that make up ionic compounds have the same properties as the elements from which they are formed. 
B)  Many ionic compounds are soluble in water. 
C)  Ionic compounds have high melting points. 
D)  Ions dissolved in water conduct electricity. 
E)  Ionic compounds are composed of cations and anions. 
A)  Ions that make up ionic compounds have the same properties as the elements from which they are formed. 
B)  Many ionic compounds are soluble in water. 
C)  Ionic compounds have high melting points. 
D)  Ions dissolved in water conduct electricity. 
E)  Ionic compounds are composed of cations and anions.

Question 2

How many bonds is chlorine MOST likely to form?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 3

Which of the structures are covalent compounds?

Accepted Answer

A)  I 
B)  II, III, and IV 
C)  II and IV 
D)  V 
E)  All of the choices are covalent molecules. 
A)  I 
B)  II, III, and IV 
C)  II and IV 
D)  V 
E)  All of the choices are covalent molecules.

Question 4

An ion of cobalt has 25 electrons total.What is the charge of the cobalt ion?

Accepted Answer

A)  +2 
B)  +1 
C)  It is neutral. 
D)  -1 
E)  -2 
A)  +2 
B)  +1 
C)  It is neutral. 
D)  -1 
E)  -2

Question 5

An important part of writing a formula unit for an ionic compound is to make sure that

Accepted Answer

A)  the charges of the ions add up to zero. 
B)  there is never more than one type of cation and one type of anion in the formula. 
C)  the ionic compound actually exists in nature. 
D)  the anion is written first, followed by the cation. 
E)  the ratio of cation to anion is 1:1. 
A)  the charges of the ions add up to zero. 
B)  there is never more than one type of cation and one type of anion in the formula. 
C)  the ionic compound actually exists in nature. 
D)  the anion is written first, followed by the cation. 
E)  the ratio of cation to anion is 1:1.

Question 6

Select the statement that BEST differentiates between bonding and nonbonding electrons.

Accepted Answer

A)  There are always more bonding electrons than lone pairs in a molecule. 
B)  Nonbonding electrons are less chemically important than bonding electrons. 
C)  Nonbonding electrons do not count toward an atom's octet of electrons. 
D)  Bonding electrons are shared and nonbonding electrons are not shared. 
E)  The more nonbonding electrons that an atom has, the more unstable the atom is. 
A)  There are always more bonding electrons than lone pairs in a molecule. 
B)  Nonbonding electrons are less chemically important than bonding electrons. 
C)  Nonbonding electrons do not count toward an atom's octet of electrons. 
D)  Bonding electrons are shared and nonbonding electrons are not shared. 
E)  The more nonbonding electrons that an atom has, the more unstable the atom is.

Question 7

Which of the following is NOT a monoatomic electrolyte in the body?

Accepted Answer

A)  sodium ion 
B)  potassium ion 
C)  oxygen 
D)  calcium ion 
E)  chloride ion 
A)  sodium ion 
B)  potassium ion 
C)  oxygen 
D)  calcium ion 
E)  chloride ion

Question 8

Which of the following statements about caffeine is TRUE?

Accepted Answer

A)  Caffeine is a compound. 
B)  It is consumed by the majority of North Americans. 
C)  Caffeine binds to the adenosine receptor. 
D)  Caffeine activates the pleasure centers of the brain. 
E)  All of the above statements about caffeine are true. 
A)  Caffeine is a compound. 
B)  It is consumed by the majority of North Americans. 
C)  Caffeine binds to the adenosine receptor. 
D)  Caffeine activates the pleasure centers of the brain. 
E)  All of the above statements about caffeine are true.

Question 9

In general, how many bonds does a nonmetal in period 2 form?

Accepted Answer

A)  the same number as the number of nonbonding electrons in the atom 
B)  the same number as the number of electrons needed to obtain an octet 
C)  the same number as the total number of electrons in the atom 
D)  eight, in accordance with the octet rule 
E)  It is impossible to predict the number. 
A)  the same number as the number of nonbonding electrons in the atom 
B)  the same number as the number of electrons needed to obtain an octet 
C)  the same number as the total number of electrons in the atom 
D)  eight, in accordance with the octet rule 
E)  It is impossible to predict the number.

Question 10

Below are two ions (not drawn to scale).What will they do when in close proximity to one another?

Accepted Answer

A)  They will attract one another, forming an ionic compound. 
B)  They will attract one another, forming a covalent bond. 
C)  The sodium ion will transfer a proton to the chloride ion. 
D)  The chloride ion will transfer an electron to the sodium ion. 
E)  They will do nothing. 
A)  They will attract one another, forming an ionic compound. 
B)  They will attract one another, forming a covalent bond. 
C)  The sodium ion will transfer a proton to the chloride ion. 
D)  The chloride ion will transfer an electron to the sodium ion. 
E)  They will do nothing.

Question 11

Elements in group 6A (16)have a -2 charge when they are in compounds.Which of the following statements BEST explains the reason for this observation?

Accepted Answer

A)  These elements accept two electrons to increase in energy. 
B)  These elements donate two electrons during the bonding process. 
C)  These elements accept two electrons to achieve an electron arrangement like a noble gas. 
D)  These elements donate two electrons to minimize their mass. 
E)  There is no way to rationalize this; it is just an observation. 
A)  These elements accept two electrons to increase in energy. 
B)  These elements donate two electrons during the bonding process. 
C)  These elements accept two electrons to achieve an electron arrangement like a noble gas. 
D)  These elements donate two electrons to minimize their mass. 
E)  There is no way to rationalize this; it is just an observation.

Question 12

The name of Al3+ is ____________.

Accepted Answer

A)  aluminide 
B)  aluminum ion 
C)  aluminum three 
D)  alide 
E)  trialuminum 
A)  aluminide 
B)  aluminum ion 
C)  aluminum three 
D)  alide 
E)  trialuminum

Question 13

In an ionic compound

Accepted Answer

A)  nonmetals share electrons. 
B)  nonmetals donate electrons to metals. 
C)  metals are attracted to one another. 
D)  metals share electrons. 
E)  cations and anions are attracted to one another. 
A)  nonmetals share electrons. 
B)  nonmetals donate electrons to metals. 
C)  metals are attracted to one another. 
D)  metals share electrons. 
E)  cations and anions are attracted to one another.

Question 14

What is the meaning of the symbol below? [PO4]3-

Accepted Answer

A)  The phosphorous has three more electrons than protons. 
B)  Three oxygens each have one more electron than protons. 
C)  Each of the four oxygens has three more electrons than protons. 
D)  The ion has three more electrons than protons. 
E)  The 3- means that the molecule has lost three electrons. 
A)  The phosphorous has three more electrons than protons. 
B)  Three oxygens each have one more electron than protons. 
C)  Each of the four oxygens has three more electrons than protons. 
D)  The ion has three more electrons than protons. 
E)  The 3- means that the molecule has lost three electrons.

Question 15

People on a low salt diet use a potassium chloride substitute for sodium chloride.Which of the following is a valid ionic formula for potassium chloride?

Accepted Answer

A)  NaCl 
B)  NaCl2 
C)  KCl2 
D)  KCl 
E)  K2Cl 
A)  NaCl 
B)  NaCl2 
C)  KCl2 
D)  KCl 
E)  K2Cl

Which of the following statements about ionic compounds is NOT true?

How many bonds is chlorine MOST likely to form?

Which of the structures are covalent compounds?

An ion of cobalt has 25 electrons total.What is the charge of the cobalt ion?

An important part of writing a formula unit for an ionic compound is to make sure that

Select the statement that BEST differentiates between bonding and nonbonding electrons.

Which of the following is NOT a monoatomic electrolyte in the body?

Which of the following statements about caffeine is TRUE?

In general, how many bonds does a nonmetal in period 2 form?

Below are two ions (not drawn to scale).What will they do when in close proximity to one another?

Elements in group 6A (16)have a -2 charge when they are in compounds.Which of the following statements BEST explains the reason for this observation?

The name of Al³⁺ is ____________.

In an ionic compound

What is the meaning of the symbol below? [PO₄]^3-

People on a low salt diet use a potassium chloride substitute for sodium chloride.Which of the following is a valid ionic formula for potassium chloride?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 3: Ionic and Covalent Compounds

Which of the following statements about ionic compounds is NOT true?

How many bonds is chlorine MOST likely to form?

Which of the structures are covalent compounds?

An ion of cobalt has 25 electrons total.What is the charge of the cobalt ion?

An important part of writing a formula unit for an ionic compound is to make sure that

Select the statement that BEST differentiates between bonding and nonbonding electrons.

Which of the following is NOT a monoatomic electrolyte in the body?

Which of the following statements about caffeine is TRUE?

In general, how many bonds does a nonmetal in period 2 form?

Below are two ions (not drawn to scale).What will they do when in close proximity to one another?

Elements in group 6A (16)have a -2 charge when they are in compounds.Which of the following statements BEST explains the reason for this observation?

The name of Al3+ is ____________.

In an ionic compound

What is the meaning of the symbol below? [PO4]3-

People on a low salt diet use a potassium chloride substitute for sodium chloride.Which of the following is a valid ionic formula for potassium chloride?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

The name of Al³⁺ is ____________.

What is the meaning of the symbol below? [PO₄]^3-