Question 1

Of the choices below, which one is not an ionic compound?

Accepted Answer

A)  PbCl2  
B)  PCl5  
C)  MoCl6  
D)  NaCl 
E)  RbCl 
A)  PbCl2  
B)  PCl5  
C)  MoCl6  
D)  NaCl 
E)  RbCl

Question 2

Of the following, the smallest and lightest subatomic particle is the .

Accepted Answer

A)  electron 
B)  proton 
C)  nucleus 
D)  alpha particle 
E)  neutron 
A)  electron 
B)  proton 
C)  nucleus 
D)  alpha particle 
E)  neutron

Question 3

the possible oxication numbers for gold are 1+ and 2+.

Accepted Answer

A) True 
 B)False

Question 4

Which one of the following species has as many electrons as it has neutrons?

Accepted Answer

A) . 14C 
B) . 40Ca2+  
C) . 1H 
D) . 14C2+  
E) . 19F- 
A) . 14C 
B) . 40Ca2+  
C) . 1H 
D) . 14C2+  
E) . 19F-

Question 5

The name of PCl3 is _ .

Accepted Answer

A)  trichloro potassium 
B)  potassium chloride 
C)  phosphorous(III) chloride 
D)  phosphorus trichloride 
E)  monophosphorous trichloride 
A)  trichloro potassium 
B)  potassium chloride 
C)  phosphorous(III) chloride 
D)  phosphorus trichloride 
E)  monophosphorous trichloride

Question 6

The charge on the manganese in the salt MnF3 is _ .

Accepted Answer

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

Question 7

The element X has two 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)  34.02 
B)  30.20 
C)  35.22 
D)  32.73 
E)  33.19 
A)  34.02 
B)  30.20 
C)  35.22 
D)  32.73 
E)  33.19

Question 8

Which element forms an ion with the same charge as the ammonium ion?

Accepted Answer

A)  nitrogen 
B)  oxygen 
C)  potassium 
D)  chlorine 
E)  calcium 
A)  nitrogen 
B)  oxygen 
C)  potassium 
D)  chlorine 
E)  calcium

Question 9

Which pair of elements below should be the most similar in chemical properties?

Accepted Answer

A)  I and Br 
B)  Cs and He 
C)  B and As 
D)  C and O 
E)  K and Kr 
A)  I and Br 
B)  Cs and He 
C)  B and As 
D)  C and O 
E)  K and Kr

Question 10

In the periodic table, the elements are arranged in .

Accepted Answer

A)  alphabetical order 
B)  order of increasing neutron content 
C)  reverse alphabetical order 
D)  order of increasing metallic properties 
E)  order of increasing atomic number 
A)  alphabetical order 
B)  order of increasing neutron content 
C)  reverse alphabetical order 
D)  order of increasing metallic properties 
E)  order of increasing atomic number

Question 11

Predict the empirical formula of the ionic compound that forms from magnesium and oxygen.

Accepted Answer

A)  MgO2  
B)  MgO 
C)  Mg2O2  
D)  Mg3O2  
E)  Mg2O 
A)  MgO2  
B)  MgO 
C)  Mg2O2  
D)  Mg3O2  
E)  Mg2O

Question 12

Which species below is the nitrate ion?

Accepted Answer

A)  NH4+  
B)  N3-  
C)  NO3-  
D)  NO2-  
E)  N3- 
A)  NH4+  
B)  N3-  
C)  NO3-  
D)  NO2-  
E)  N3-

Question 13

In the symbol below, x = .
X C 6

Accepted Answer

A)  6 
B)  7 
C)  19 
D)  13 
E)  not enough information to determine 
A)  6 
B)  7 
C)  19 
D)  13 
E)  not enough information to determine

Question 14

Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ratio of 3:
1 by mass. In ethane, there are 24.0 g of carbon for every 6.00 g of hydrogen, a ratio of 4:
1 by mass. This is a statement of the law of _.

Accepted Answer

A)  multiple proportions 
B)  conservation of matter 
C)  octaves 
D)  conservation of mass 
E)  constant composition 
A)  multiple proportions 
B)  conservation of matter 
C)  octaves 
D)  conservation of mass 
E)  constant composition

Question 15

The name of the ionic compound KBrO4 is _ .

Accepted Answer

A)  potassium perbromite 
B)  potassium bromide 
C)  potassium hypobromate 
D)  potassium bromate 
E)  potassium perbromate 
A)  potassium perbromite 
B)  potassium bromide 
C)  potassium hypobromate 
D)  potassium bromate 
E)  potassium perbromate

Question 16

The most metallic halogen is astatine.

Accepted Answer

A) True 
 B)False

Question 17

Which one of the following compounds is chromium(III) oxide?

Accepted Answer

A)  Cr3O 
B)  Cr2O4  
C)  Cr2O3  
D)  Cr3O2  
E)  CrO3 
A)  Cr3O 
B)  Cr2O4  
C)  Cr2O3  
D)  Cr3O2  
E)  CrO3

Question 18

An atom of the most common isotope of gold, 197Au, has protons, _ _ neutrons, and electrons.

Accepted Answer

A)  79, 118, 79 
B)  79, 118, 118 
C)  79, 197, 197 
D)  197, 79, 118 
E)  118, 79, 39 
A)  79, 118, 79 
B)  79, 118, 118 
C)  79, 197, 197 
D)  197, 79, 118 
E)  118, 79, 39

Question 19

Consider the following selected postulates of Dalton's atomic theory:
i. Each element is composed of extremely small particles called atoms.
ii. Atoms are indivisible.
iii. Atoms of a given element are identical.
iv. Atoms of different elements are different and have different properties. Which of the postulates is(are)no longer valid?

Accepted Answer

A)  (iii) and (iv) 
B)  (i) and (ii) 
C)  (ii) only 
D)  (iii) only 
E)  (ii) and (iii) 
A)  (iii) and (iv) 
B)  (i) and (ii) 
C)  (ii) only 
D)  (iii) only 
E)  (ii) and (iii)

Question 20

Sulfur forms an ion with a charge of _ .

Accepted Answer

A)  - 2 
B)  +2 
C)  +3 
D)  - 6 
E)  +6 
A)  - 2 
B)  +2 
C)  +3 
D)  - 6 
E)  +6

Exam 2: Atoms, Molecules, and Ions

Of the choices below, which one is not an ionic compound?

Of the following, the smallest and lightest subatomic particle is the .

the possible oxication numbers for gold are 1+ and 2+.

Which one of the following species has as many electrons as it has neutrons?

The name of PCl3 is _ .

The charge on the manganese in the salt MnF3 is _ .

The element X has two 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.

Which element forms an ion with the same charge as the ammonium ion?

Which pair of elements below should be the most similar in chemical properties?

In the periodic table, the elements are arranged in .

Predict the empirical formula of the ionic compound that forms from magnesium and oxygen.

Which species below is the nitrate ion?

In the symbol below, x = . X C 6

Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ratio of 3: 1 by mass. In ethane, there are 24.0 g of carbon for every 6.00 g of hydrogen, a ratio of 4: 1 by mass. This is a statement of the law of _.

The name of the ionic compound KBrO4 is _ .

The most metallic halogen is astatine.

Which one of the following compounds is chromium(III) oxide?

An atom of the most common isotope of gold, 197Au, has protons, _ _ neutrons, and electrons.

Sulfur forms an ion with a charge of _ .

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 name of PCl₃is _ .

The charge on the manganese in the salt MnF₃is _ .

In the symbol below, x = . X _C 6

The name of the ionic compound KBrO₄is _ .

An atom of the most common isotope of gold, ¹⁹⁷Au, has protons, _ _ neutrons, and electrons.