Question 1

Which species below is the nitrate ion?

Accepted Answer

A) NO2- 
B) NO3- 
C) ClO3- 
D) ClO4- 
E) MnO4- 
A) NO2- 
B) NO3- 
C) ClO3- 
D) ClO4- 
E) MnO4-

Question 2

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 3

In the symbol shown below,x = ________.   C

Accepted Answer

A) 7 
B) 13 
C) 12 
D) 6 
E) not enough information to determine 
A) 7 
B) 13 
C) 12 
D) 6 
E) not enough information to determine

Question 4

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

Accepted Answer

A) O, S 
B) C, N 
C) K, Ca 
D) H, He 
E) Si, P 
A) O, S 
B) C, N 
C) K, Ca 
D) H, He 
E) Si, P

Question 5

In the symbol below,x = ________.   Cl

Accepted Answer

A) 17 
B) 34 
C) 16 
D) 36 
E) not enough information to determine 
A) 17 
B) 34 
C) 16 
D) 36 
E) not enough information to determine

Question 6

Magnesium and sulfur form an ionic compound with the formula ________.

Accepted Answer

A) MgS 
B) Mg2S 
C) MgS2 
D) Mg2S2 
E) Mg2S3 
A) MgS 
B) Mg2S 
C) MgS2 
D) Mg2S2 
E) Mg2S3

Question 7

Of the following,only ________ is not a metalloid.

Accepted Answer

A) B 
B) Po 
C) Si 
D) Ge 
E) As 
A) B 
B) Po 
C) Si 
D) Ge 
E) As

Question 8

Potassium is a ________ and chlorine is a ________.

Accepted Answer

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

Question 9

The correct name for HBrO is ________.

Accepted Answer

A) hydrobromic acid 
B) perbromic acid 
C) bromic acid 
D) bromous acid 
E) hypobromous acid 
A) hydrobromic acid 
B) perbromic acid 
C) bromic acid 
D) bromous acid 
E) hypobromous acid

Question 10

The element X has three naturally occurring isotopes.The isotopic 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) 33.33 
B) 55.74 
C) 56.11 
D) 57.23 
E) 56.29 
A) 33.33 
B) 55.74 
C) 56.11 
D) 57.23 
E) 56.29

Question 11

________ and ________ reside in the atomic nucleus.

Accepted Answer

A) Protons, electrons 
B) Electrons, neutrons 
C) Protons, neutrons 
D) Neutrons, only neutrons 
E) none of the above 
A) Protons, electrons 
B) Electrons, neutrons 
C) Protons, neutrons 
D) Neutrons, only neutrons 
E) none of the above

Question 12

The ions Ca2+ and PO43- form a salt with the formula ________.

Accepted Answer

A) CaPO4 
B) Ca2(PO4)3 
C) Ca2PO4 
D) Ca(PO4)2 
E) Ca3(PO4)2 
A) CaPO4 
B) Ca2(PO4)3 
C) Ca2PO4 
D) Ca(PO4)2 
E) Ca3(PO4)2

Question 13

An empirical formula always indicates ________.

Accepted Answer

A) which atoms are attached to which in a molecule 
B) how many of each atom are in a molecule 
C) the simplest whole-number ratio of different atoms in a compound 
D) the isotope of each element in a compound 
E) the geometry of a molecule 
A) which atoms are attached to which in a molecule 
B) how many of each atom are in a molecule 
C) the simplest whole-number ratio of different atoms in a compound 
D) the isotope of each element in a compound 
E) the geometry of a molecule

Question 14

What is the molecular formula for propane?

Accepted Answer

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

Question 15

The correct name for H2SO4 is ________.

Accepted Answer

A) sulfuric acid 
B) sulfurous acid 
C) hydrosulfuric acid 
D) hydrosulfic acid 
E) sulfur hydroxide 
A) sulfuric acid 
B) sulfurous acid 
C) hydrosulfuric acid 
D) hydrosulfic acid 
E) sulfur hydroxide

Question 16

Which atom has the largest number of neutrons?

Accepted Answer

A) silicon-30 
B) sulfur-36 
C) argon-38 
D) calcium-44 
E) magnesium-24 
A) silicon-30 
B) sulfur-36 
C) argon-38 
D) calcium-44 
E) magnesium-24

Question 17

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 18

The subatomic particles located in the nucleus with no overall charges are ________.

Accepted Answer

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

Question 19

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

Accepted Answer

A) Li, F 
B) Sr, Te 
C) O, S 
D) In, Sb 
E) Ti, Ne 
A) Li, F 
B) Sr, Te 
C) O, S 
D) In, Sb 
E) Ti, Ne

Question 20

What is the correct name for the following alkane,C5H12?

Accepted Answer

A) heptane 
B) propane 
C) hexane 
D) pentane 
E) butane 
A) heptane 
B) propane 
C) hexane 
D) pentane 
E) butane

Exam 2: Atoms, molecules, and Ions

Which species below is the nitrate ion?

Which one of the following is a metalloid?

In the symbol shown below,x = ________. C

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

In the symbol below,x = ________. Cl

Magnesium and sulfur form an ionic compound with the formula ________.

Of the following,only ________ is not a metalloid.

Potassium is a ________ and chlorine is a ________.

The correct name for HBrO is ________.

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

________ and ________ reside in the atomic nucleus.

The ions Ca2+ and PO43- form a salt with the formula ________.

An empirical formula always indicates ________.

What is the molecular formula for propane?

The correct name for H2SO4 is ________.

Which atom has the largest number of neutrons?

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 ________.

The subatomic particles located in the nucleus with no overall charges are ________.

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

What is the correct name for the following alkane,C5H12?

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

Potassium is a and chlorine is a .

and reside in the atomic nucleus.

The ions Ca²⁺ and PO₄^3- form a salt with the formula ________.

The correct name for H₂SO₄is ________.

What is the correct name for the following alkane,C₅H₁₂?