Question 1

An ion has 26 protons, 29 neutrons, and 23 electrons. The symbol for the ion is ________.

Accepted Answer

A) "55Fe3+" 
B) "55Fe3-" 
C) "52Cu3+" 
D) "52Cu3-" 
E) "55V3-" 
A) "55Fe3+" 
B) "55Fe3-" 
C) "52Cu3+" 
D) "52Cu3-" 
E) "55V3-"

Question 2

Silver has two naturally occurring isotopes with the following isotopic masses:   Ar   Ar 106.90509 108.9047
The average atomic mass of silver is 107.8682 amu. The fractional abundance of the lighter of the two isotopes is ________.

Accepted Answer

A) 0.24221 
B) 0.48168 
C) 0.51835 
D) 0.75783 
E) 0.90474 
A) 0.24221 
B) 0.48168 
C) 0.51835 
D) 0.75783 
E) 0.90474

Question 3

Predict the charge of the most stable ion of aluminum.

Accepted Answer

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

Question 4

Gravitational forces act between objects in proportion to their ________.

Accepted Answer

A) volumes 
B) masses 
C) charges 
D) polarizability 
E) densities 
A) volumes 
B) masses 
C) charges 
D) polarizability 
E) densities

Question 5

The formula for chromium (II)iodide is CrI2.

Accepted Answer

A) True 
 B)False

Question 6

An element in the upper right corner of the periodic table ________.

Accepted Answer

A) is either a metal or metalloid 
B) is definitely a metal 
C) is either a metalloid or a nonmetal 
D) is definitely a nonmetal 
E) is definitely a metalloid 
A) is either a metal or metalloid 
B) is definitely a metal 
C) is either a metalloid or a nonmetal 
D) is definitely a nonmetal 
E) is definitely a metalloid

Question 7

The name of the binary compound N2O4 is ________.

Accepted Answer

A) nitrogen oxide 
B) nitrous oxide 
C) nitrogen (IV)oxide 
D) dinitrogen tetroxide 
E) oxygen nitride 
A) nitrogen oxide 
B) nitrous oxide 
C) nitrogen (IV)oxide 
D) dinitrogen tetroxide 
E) oxygen nitride

Question 8

Which one of the following is a metalloid?

Accepted Answer

A) Se 
B) Hf 
C) Zr 
D) Xe 
E) Si 
A) Se 
B) Hf 
C) Zr 
D) Xe 
E) Si

Question 9

Different isotopes of a particular element contain the same number of ________.

Accepted Answer

A) protons 
B) neutrons 
C) protons and neutrons 
D) protons, neutrons, and electrons 
E) subatomic particles 
A) protons 
B) neutrons 
C) protons and neutrons 
D) protons, neutrons, and electrons 
E) subatomic particles

Question 10

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

Accepted Answer

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

Question 11

When calcium reacts with sulfur the compound formed is ________.

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

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 an illustration of the law of ________.

Accepted Answer

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

Question 14

200 pm is the same as ________ Å.

Accepted Answer

A) 2000 
B) 20 
C) 200 
D) 2 
E) 0.0002 
A) 2000 
B) 20 
C) 200 
D) 2 
E) 0.0002

Question 15

What is the molecular formula for heptane?

Accepted Answer

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

Question 16

Which isotope has 45 neutrons?

Accepted Answer

A)    Kr 
B)    Br 
C)    Se 
D)    Cl 
E)    Rh 
A)    Kr 
B)    Br 
C)    Se 
D)    Cl 
E)    Rh

Question 17

The name of PCl3 is ________.

Accepted Answer

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

Question 18

Which one of the following polyatomic ions has the same charge as the hydroxide ion?

Accepted Answer

A) ammonium 
B) carbonate 
C) nitrate 
D) sulfate 
E) phosphate 
A) ammonium 
B) carbonate 
C) nitrate 
D) sulfate 
E) phosphate

Question 19

Which element in Group IA is the most electropositive?

Accepted Answer

The answer of Which element in Group IA is the...

Question 20

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

Accepted Answer

A) AlO 
B) Al3O2 
C) Al2O3 
D) AlO2 
E) Al2O 
A) AlO 
B) Al3O2 
C) Al2O3 
D) AlO2 
E) Al2O

Exam 2: Atoms, Molecules, and Ions

An ion has 26 protons, 29 neutrons, and 23 electrons. The symbol for the ion is ________.

Silver has two naturally occurring isotopes with the following isotopic masses: Ar Ar 106.90509 108.9047 The average atomic mass of silver is 107.8682 amu. The fractional abundance of the lighter of the two isotopes is ________.

Predict the charge of the most stable ion of aluminum.

Gravitational forces act between objects in proportion to their ________.

The formula for chromium (II)iodide is CrI2.

An element in the upper right corner of the periodic table ________.

The name of the binary compound N2O4 is ________.

Which one of the following is a metalloid?

Different isotopes of a particular element contain the same number of ________.

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

When calcium reacts with sulfur the compound formed is ________.

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

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 an illustration of the law of ________.

200 pm is the same as ________ Å.

What is the molecular formula for heptane?

Which isotope has 45 neutrons?

The name of PCl3 is ________.

Which one of the following polyatomic ions has the same charge as the hydroxide ion?

Which element in Group IA is the most electropositive?

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

Introduction: Matter and Measurement

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

The formula for chromium (II)iodide is CrI₂.

The name of the binary compound N₂O₄ is ________.

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

The name of PCl₃ is ________.