Question 1

The proper formula for the hydronium ion is ________.

Accepted Answer

A) H- 
B) OH- 
C) N3- 
D) H3O+ 
E) NH4+ 
A) H- 
B) OH- 
C) N3- 
D) H3O+ 
E) NH4+

Question 2

Elements in Group 7A are known as the ________.

Accepted Answer

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

Question 3

The mass number of an atom of 14C is ________.

Accepted Answer

A) 6 
B) 20 
C) 8 
D) 14 
E) 10 
A) 6 
B) 20 
C) 8 
D) 14 
E) 10

Question 4

Of the three types of radioactivity characterized by Rutherford,which are particles?

Accepted Answer

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

Question 5

There are ________ protons,________ neutrons,and ________ electrons in 238U+5.

Accepted Answer

A) 146, 92, 92 
B) 92, 146, 87 
C) 92, 146, 92 
D) 92, 92, 87 
E) 146, 92, 97 
A) 146, 92, 92 
B) 92, 146, 87 
C) 92, 146, 92 
D) 92, 92, 87 
E) 146, 92, 97

Question 6

A molecular formula always indicates ________.

Accepted Answer

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

Question 7

The formula for potassium sulfide is ________.

Accepted Answer

The answer of The formula for potassium sulfide is ________....

Question 8

520 pm is the same as ________ Å.

Accepted Answer

A) 5200 
B) 52 
C) 520 
D) 5.2 
E) 0.00052 
A) 5200 
B) 52 
C) 520 
D) 5.2 
E) 0.00052

Question 9

In the periodic table,the elements are arranged in ________.

Accepted Answer

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

Question 10

The charge on the copper ion in the salt CuO is ________.

Accepted Answer

A) +1 
B) +2 
C) +4 
D) +3 
E) +5 
A) +1 
B) +2 
C) +4 
D) +3 
E) +5

Question 11

There are ________ protons,________ electrons,and ________ neutrons in an atom of   Xe.

Accepted Answer

A) 129, 129, 129 
B) 129, 129, 75 
C) 54, 75, 129 
D) 54, 54, 75 
E) 54, 54, 129 
A) 129, 129, 129 
B) 129, 129, 75 
C) 54, 75, 129 
D) 54, 54, 75 
E) 54, 54, 129

Question 12

The charge on an electron was determined in the ________.

Accepted Answer

A) cathode ray tube, by J. J. Thomson 
B) Rutherford gold foil experiment 
C) Millikan oil drop experiment 
D) Dalton atomic theory 
E) atomic theory of matter 
A) cathode ray tube, by J. J. Thomson 
B) Rutherford gold foil experiment 
C) Millikan oil drop experiment 
D) Dalton atomic theory 
E) atomic theory of matter

Question 13

How many protons does the Br- ion possess?

Accepted Answer

A) 34 
B) 36 
C) 6 
D) 8 
E) 35 
A) 34 
B) 36 
C) 6 
D) 8 
E) 35

Question 14

The nucleus of an atom does not contain ________.

Accepted Answer

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

Question 15

The correct name for CaH2 is ________.

Accepted Answer

A) hydrocalcium 
B) calcium dihydride 
C) calcium hydroxide 
D) calcium dihydroxide 
E) calcium hydride 
A) hydrocalcium 
B) calcium dihydride 
C) calcium hydroxide 
D) calcium dihydroxide 
E) calcium hydride

Question 16

Elements in the same group of the periodic table typically have ________.

Accepted Answer

A) similar mass numbers 
B) similar physical properties only 
C) similar chemical properties only 
D) similar atomic masses 
E) similar physical and chemical properties 
A) similar mass numbers 
B) similar physical properties only 
C) similar chemical properties only 
D) similar atomic masses 
E) similar physical and chemical properties

Question 17

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

Accepted Answer

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

Question 18

The charge on the silver ion in the salt AgCl is ________.

Accepted Answer

A) +2 
B) +1 
C) +3 
D) +4 
E) +5 
A) +2 
B) +1 
C) +3 
D) +4 
E) +5

Question 19

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 20

Chromium and chlorine form an ionic compound whose formula is CrCl3.The name of this compound is ________.

Accepted Answer

A) chromium chlorine 
B) chromium (III)chloride 
C) monochromium trichloride 
D) chromium (III)trichloride 
E) chromic trichloride 
A) chromium chlorine 
B) chromium (III)chloride 
C) monochromium trichloride 
D) chromium (III)trichloride 
E) chromic trichloride

Exam 2: Atoms, molecules, and Ions

The proper formula for the hydronium ion is ________.

Elements in Group 7A are known as the ________.

The mass number of an atom of 14C is ________.

Of the three types of radioactivity characterized by Rutherford,which are particles?

There are ________ protons,________ neutrons,and ________ electrons in 238U+5.

A molecular formula always indicates ________.

The formula for potassium sulfide is ________.

520 pm is the same as ________ Å.

In the periodic table,the elements are arranged in ________.

The charge on the copper ion in the salt CuO is ________.

There are ________ protons,________ electrons,and ________ neutrons in an atom of Xe.

The charge on an electron was determined in the ________.

How many protons does the Br- ion possess?

The nucleus of an atom does not contain ________.

The correct name for CaH2 is ________.

Elements in the same group of the periodic table typically have ________.

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

The charge on the silver ion in the salt AgCl is ________.

The name of the binary compound N2O4 is ________.

Chromium and chlorine form an ionic compound whose formula is CrCl3.The name of this compound is ________.

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 mass number of an atom of 14_{C is ________.}

There are protons, neutrons,and electrons in ²³⁸U⁺⁵.

There are protons, electrons,and neutrons in an atom of Xe.

How many protons does the Br^- ion possess?

The correct name for CaH₂ is ________.

The name of the binary compound N₂O₄is ________.

Chromium and chlorine form an ionic compound whose formula is CrCl₃.The name of this compound is ________.