Question 1

The nucleus of an atom does not contain .

Accepted Answer

A)  protons 
B)  neutrons 
C)  subatomic particles 
D)  protons or neutrons 
E)  electrons 
A)  protons 
B)  neutrons 
C)  subatomic particles 
D)  protons or neutrons 
E)  electrons

Question 2

Barium forms an ion with a charge of .

Accepted Answer

A)  +1 
B)  +2 
C)  +3 
D)  - 2 
E)  - 3 
A)  +1 
B)  +2 
C)  +3 
D)  - 2 
E)  - 3

Question 3

Of the three types of radioactivity characterized by Rutherford, which is/are not particles?

Accepted Answer

A)  γ- rays 
B)  α- rays, β- rays, and γ- rays 
C)  β- rays 
D)  α- rays 
E)  α- rays and β- rays 
A)  γ- rays 
B)  α- rays, β- rays, and γ- rays 
C)  β- rays 
D)  α- rays 
E)  α- rays and β- rays

Question 4

What is the molecular formula for heptane _ _ ?

Accepted Answer

A)  C6H14  
B)  C7H16  
C)  C7H14  
D)  C7H18  
E)  C6H12 
A)  C6H14  
B)  C7H16  
C)  C7H14  
D)  C7H18  
E)  C6H12

Question 5

Which compounds do not have the same empirical formula?

Accepted Answer

A)  CO, CO2 
B)  C2H4, C3H6 
C)  C2H5COOCH3, CH3CHO 
D)  C2H4O2, C6H12O6 
E)  C2H2, C6H6 
A)  CO, CO2 
B)  C2H4, C3H6 
C)  C2H5COOCH3, CH3CHO 
D)  C2H4O2, C6H12O6 
E)  C2H2, C6H6

Question 6

Of the three types of radioactivity characterized by Rutherford, which is/are not electrically charged?

Accepted Answer

A)  α- rays and β- rays 
B)  α- rays and γ- rays 
C)  α- rays 
D)  γ- rays 
E)  α- rays, β- rays, and γ- rays 
A)  α- rays and β- rays 
B)  α- rays and γ- rays 
C)  α- rays 
D)  γ- rays 
E)  α- rays, β- rays, and γ- rays

Question 7

Which pair of elements is most apt to form a molecular compound with each other?

Accepted Answer

A)  barium, bromine 
B)  magnesium, iodine 
C)  sulfur, fluorine 
D)  potassium, lithium 
E)  aluminum, oxygen 
A)  barium, bromine 
B)  magnesium, iodine 
C)  sulfur, fluorine 
D)  potassium, lithium 
E)  aluminum, oxygen

Question 8

Calcium is a and silver is a .

Accepted Answer

A)  metal, metalloid 
B)  metalloid, metal 
C)  metal, metal 
D)  nonmetal, metalloid 
E)  nonmetal, metal 
A)  metal, metalloid 
B)  metalloid, metal 
C)  metal, metal 
D)  nonmetal, metalloid 
E)  nonmetal, metal

Question 9

Elements in Group 7A are known as the _ _.

Accepted Answer

A)  noble gases 
B)  chalcogens 
C)  alkaline earth metals 
D)  halogens 
E)  alkali metals 
A)  noble gases 
B)  chalcogens 
C)  alkaline earth metals 
D)  halogens 
E)  alkali metals

Question 10

Isotopes are atoms that have the same number of but differing number of .

Accepted Answer

A)  protons, electrons 
B)  neutrons, electrons 
C)  protons, neutrons 
D)  electrons, protons 
E)  neutrons, protons 
A)  protons, electrons 
B)  neutrons, electrons 
C)  protons, neutrons 
D)  electrons, protons 
E)  neutrons, protons

Question 11

The atomic number indicates .

Accepted Answer

A)  the total number of neutrons and protons in a nucleus 
B)  the number of atoms in 1 g of an element 
C)  the number of protons or electrons in a neutral atom 
D)  the number of neutrons in a nucleus 
E)  the number of different isotopes of an element 
A)  the total number of neutrons and protons in a nucleus 
B)  the number of atoms in 1 g of an element 
C)  the number of protons or electrons in a neutral atom 
D)  the number of neutrons in a nucleus 
E)  the number of different isotopes of an element

Question 12

Which species has 16 protons?

Accepted Answer

A) . 31P 
B) . 80Br-  
C)  .34S2-  
D)  .16O 
E)  .36Cl 
A) . 31P 
B) . 80Br-  
C)  .34S2-  
D)  .16O 
E)  .36Cl

Question 13

All atoms of a given element have the same .

Accepted Answer

A)  density 
B)  number of protons 
C)  number of electrons and neutrons 
D)  mass 
E)  number of neutrons 
A)  density 
B)  number of protons 
C)  number of electrons and neutrons 
D)  mass 
E)  number of neutrons

Question 14

The correct name for HClO3 is _ .

Accepted Answer

A)  perchloric acid 
B)  hydrochloric acid 
C)  hydrochlorous acid 
D)  chlorous acid 
E)  chloric acid 
A)  perchloric acid 
B)  hydrochloric acid 
C)  hydrochlorous acid 
D)  chlorous acid 
E)  chloric acid

Question 15

When calcium reacts with sulfur the compound formed is .

Accepted Answer

A)  Ca3S2  
B)  Ca2S3  
C)  CaS 
D)  Ca2S2  
E)  CaS2 
A)  Ca3S2  
B)  Ca2S3  
C)  CaS 
D)  Ca2S2  
E)  CaS2

Question 16

Of the following, contains the greatest number of electrons.

Accepted Answer

A)  P 
B)  P3-  
C)  P2-  
D)  P2+  
E)  P3+ 
A)  P 
B)  P3-  
C)  P2-  
D)  P2+  
E)  P3+

Question 17

Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu.

Accepted Answer

A)  41.54 
B)  33.33 
C)  39.68 
D)  39.07 
E)  38.64 
A)  41.54 
B)  33.33 
C)  39.68 
D)  39.07 
E)  38.64

Question 18

What is the molecular formula for propane _ ?

Accepted Answer

A)  C4H8  
B)  C2H8  
C)  C4H10  
D)  C3H6  
E)  C3H8 
A)  C4H8  
B)  C2H8  
C)  C4H10  
D)  C3H6  
E)  C3H8

Question 19

Which isotope has 36 electrons in an atom?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 20

Which element in the halogen family would require the greatest ionization energy ?

Accepted Answer

The answer of Which element in the halogen family would...

Exam 2: Atoms, Molecules, and Ions

The nucleus of an atom does not contain .

Barium forms an ion with a charge of .

Of the three types of radioactivity characterized by Rutherford, which is/are not particles?

What is the molecular formula for heptane _ _ ?

Which compounds do not have the same empirical formula?

Of the three types of radioactivity characterized by Rutherford, which is/are not electrically charged?

Which pair of elements is most apt to form a molecular compound with each other?

Calcium is a and silver is a .

Elements in Group 7A are known as the _ _.

Isotopes are atoms that have the same number of but differing number of .

The atomic number indicates .

Which species has 16 protons?

All atoms of a given element have the same .

The correct name for HClO3 is _ .

When calcium reacts with sulfur the compound formed is .

Of the following, contains the greatest number of electrons.

Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is amu.

What is the molecular formula for propane _ ?

Which isotope has 36 electrons in an atom?

Which element in the halogen family would require the greatest ionization energy ?

Introduction: Matter and Measurement

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

The correct name for HClO₃is _ .