Question 1

The correct formula for molybdenum (IV)hypochlorite is ________.

Accepted Answer

A) Mo(ClO3)4 
B) Mo(ClO)4 
C) Mo(ClO2)4 
D) Mo(ClO4)4 
E) MoCl4 
A) Mo(ClO3)4 
B) Mo(ClO)4 
C) Mo(ClO2)4 
D) Mo(ClO4)4 
E) MoCl4

Question 2

Which atom has the smallest number of neutrons?

Accepted Answer

A) carbon-14 
B) nitrogen-14 
C) oxygen-16 
D) fluorine-19 
E) neon-20 
A) carbon-14 
B) nitrogen-14 
C) oxygen-16 
D) fluorine-19 
E) neon-20

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

Formulas that show how atoms are attached in a molecule are called ________.

Accepted Answer

A) molecular formulas 
B) ionic formulas 
C) empirical formulas 
D) diatomic formulas 
E) structural formulas 
A) molecular formulas 
B) ionic formulas 
C) empirical formulas 
D) diatomic formulas 
E) structural formulas

Question 5

The formula of bromic acid is ________.

Accepted Answer

A) HBr 
B) HBrO4 
C) HBrO 
D) HBrO3 
E) HBrO2 
A) HBr 
B) HBrO4 
C) HBrO 
D) HBrO3 
E) HBrO2

Question 6

Predict the empirical formula of the ionic compound that forms from sodium and fluorine.

Accepted Answer

A) NaF 
B) Na2F 
C) NaF2 
D) Na2F3 
E) Na3F2 
A) NaF 
B) Na2F 
C) NaF2 
D) Na2F3 
E) Na3F2

Question 7

The charge on the ________ ion is -3.

Accepted Answer

A) sulfate 
B) acetate 
C) permanganate 
D) oxide 
E) nitride 
A) sulfate 
B) acetate 
C) permanganate 
D) oxide 
E) nitride

Question 8

The suffix -ide is used primarily ________.

Accepted Answer

A) for monatomic anion names 
B) for polyatomic cation names 
C) for the name of the first element in a molecular compound 
D) to indicate binary acids 
E) for monoatomic cations 
A) for monatomic anion names 
B) for polyatomic cation names 
C) for the name of the first element in a molecular compound 
D) to indicate binary acids 
E) for monoatomic cations

Question 9

The correct name for N2O5 is ________.

Accepted Answer

A) nitrous oxide 
B) nitrogen pentoxide 
C) dinitrogen pentoxide 
D) nitric oxide 
E) nitrogen oxide 
A) nitrous oxide 
B) nitrogen pentoxide 
C) dinitrogen pentoxide 
D) nitric oxide 
E) nitrogen oxide

Question 10

The 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) 159.4 
B) 162.0 
C) 163.1 
D) 161.5 
E) 163.0 
A) 159.4 
B) 162.0 
C) 163.1 
D) 161.5 
E) 163.0

Question 11

A correct name for Fe(NO3)2 is ________.

Accepted Answer

A) iron nitrite 
B) ferrous nitrite 
C) ferrous nitrate 
D) ferric nitrite 
E) ferric nitrate 
A) iron nitrite 
B) ferrous nitrite 
C) ferrous nitrate 
D) ferric nitrite 
E) ferric nitrate

Question 12

Which species has 18 electrons?

Accepted Answer

A) (39K) 
B) (32S2-) 
C) (35Cl) 
D) (27Al3+) 
E) (45Sc3+) 
A) (39K) 
B) (32S2-) 
C) (35Cl) 
D) (27Al3+) 
E) (45Sc3+)

Question 13

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 14

Vanadium has two naturally occurring isotopes,50V with an atomic mass of 49.9472 amu and 51V with an atomic mass of 50.9440.The atomic weight of vanadium is 50.9415.The percent abundances of the vanadium isotopes are ________% 50V and ________% 51V.

Accepted Answer

A) 0.25, 99.75 
B) 99.75, 0.25 
C) 49, 51 
D) 1.0, 99 
E) 99, 1.0 
A) 0.25, 99.75 
B) 99.75, 0.25 
C) 49, 51 
D) 1.0, 99 
E) 99, 1.0

Question 15

Elements ________ exhibit similar physical and chemical properties.

Accepted Answer

A) with similar chemical symbols 
B) with similar atomic masses 
C) in the same period of the periodic table 
D) on opposite sides of the periodic table 
E) in the same group of the periodic table 
A) with similar chemical symbols 
B) with similar atomic masses 
C) in the same period of the periodic table 
D) on opposite sides of the periodic table 
E) in the same group of the periodic table

Question 16

Copper and chlorine form an ionic compound whose formula is CuCl2.The name of this compound is ________.

Accepted Answer

A) copper chlorine 
B) copper (III)dichloride 
C) monocopper dichloride 
D) copper (II)dichloride 
E) cupric chloride 
A) copper chlorine 
B) copper (III)dichloride 
C) monocopper dichloride 
D) copper (II)dichloride 
E) cupric chloride

Question 17

In the symbol below,x = ________.   O

Accepted Answer

A) 17 
B) 8 
C) 6 
D) 7 
E) not enough information to determine 
A) 17 
B) 8 
C) 6 
D) 7 
E) not enough information to determine

Question 18

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature.Element X must be ________.

Accepted Answer

A) oxygen 
B) fluorine 
C) chlorine 
D) nitrogen 
E) sulfur 
A) oxygen 
B) fluorine 
C) chlorine 
D) nitrogen 
E) sulfur

Question 19

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 20

In the Rutherford nuclear-atom model,________.

Accepted Answer

A) the heavy subatomic particles, protons and neutrons, reside in the nucleus 
B) the three principal subatomic particles (protons, neutrons, and electrons)all have essentially the same mass 
C) the light subatomic particles, protons and neutrons, reside in the nucleus 
D) mass is spread essentially uniformly throughout the atom 
E) the three principal subatomic particles (protons, neutrons, and electrons)all have essentially the same mass and mass is spread essentially uniformly throughout the atom 
A) the heavy subatomic particles, protons and neutrons, reside in the nucleus 
B) the three principal subatomic particles (protons, neutrons, and electrons)all have essentially the same mass 
C) the light subatomic particles, protons and neutrons, reside in the nucleus 
D) mass is spread essentially uniformly throughout the atom 
E) the three principal subatomic particles (protons, neutrons, and electrons)all have essentially the same mass and mass is spread essentially uniformly throughout the atom

Exam 2: Atoms, molecules, and Ions

The correct formula for molybdenum (IV)hypochlorite is ________.

Which atom has the smallest number of neutrons?

Predict the charge of the most stable ion of aluminum.

Formulas that show how atoms are attached in a molecule are called ________.

The formula of bromic acid is ________.

Predict the empirical formula of the ionic compound that forms from sodium and fluorine.

The charge on the ________ ion is -3.

The suffix -ide is used primarily ________.

The correct name for N2O5 is ________.

The 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.

A correct name for Fe(NO3)2 is ________.

Which species has 18 electrons?

200 pm is the same as ________ Å.

Vanadium has two naturally occurring isotopes,50V with an atomic mass of 49.9472 amu and 51V with an atomic mass of 50.9440.The atomic weight of vanadium is 50.9415.The percent abundances of the vanadium isotopes are ________% 50V and ________% 51V.

Elements ________ exhibit similar physical and chemical properties.

Copper and chlorine form an ionic compound whose formula is CuCl2.The name of this compound is ________.

In the symbol below,x = ________. O

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature.Element X must be ________.

Gravitational forces act between objects in proportion to their ________.

In the Rutherford nuclear-atom model,________.

Introduction: Matter, energy, and Measurement

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

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 correct name for N₂O₅ is ________.

A correct name for Fe(NO₃)₂ is ________.

Vanadium has two naturally occurring isotopes,⁵⁰V with an atomic mass of 49.9472 amu and ⁵¹V with an atomic mass of 50.9440.The atomic weight of vanadium is 50.9415.The percent abundances of the vanadium isotopes are % ⁵⁰V and % ⁵¹V.

Copper and chlorine form an ionic compound whose formula is CuCl₂.The name of this compound is ________.