Question 1

All atoms of a particular element have identical chemical properties.

Accepted Answer

A) True 
 B)False  True

Question 2

The modern periodic law states that the physical and chemical properties of the elements are periodic functions of what property?

Accepted Answer

A) electrons 
B) atomic weight 
C) neutrons 
D) atomic number 
E) mass number 
A) electrons 
B) atomic weight 
C) neutrons 
D) atomic number 
E) mass number D

Question 3

What is Rutherford's important contribution to our knowledge of atomic structure?

Accepted Answer

A) Atoms contain a small,dense,positively charged nucleus,surrounded largely by empty space. 
B) The atom cannot be created,divided,destroyed,or converted to any other type of atom. 
C) Electrons in an atom have the magnetic property of spin. 
D) Electrons are confined to certain specific regions of space outside the nucleus. 
E) Electrons follow circular paths around the nucleus of an atom. 
A) Atoms contain a small,dense,positively charged nucleus,surrounded largely by empty space. 
B) The atom cannot be created,divided,destroyed,or converted to any other type of atom. 
C) Electrons in an atom have the magnetic property of spin. 
D) Electrons are confined to certain specific regions of space outside the nucleus. 
E) Electrons follow circular paths around the nucleus of an atom. A

Question 4

The atomic number of an atom indicates the number of protons that are present.

Accepted Answer

A) True 
 B)False

Question 5

Valence electrons are involved when atoms form bonds.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is a representative nonmetal?

Accepted Answer

A) P 
B) K 
C) Si 
D) Ni 
E) Al 
A) P 
B) K 
C) Si 
D) Ni 
E) Al

Question 7

Which of the following correctly gives the electron capacity of a principal energy level in terms of the number n?

Accepted Answer

A) n 
B) 2n 
C) 2n + 2 
D) n2 
E) 2n2 
A) n 
B) 2n 
C) 2n + 2 
D) n2 
E) 2n2

Question 8

Americium-241 is an isotope used in smoke detectors.What is the composition of a neutral atom of Americium-241?

Accepted Answer

A) 241 protons,95 neutrons,241 electrons 
B) 241 protons,95 neutrons,146 electrons 
C) 95 protons,146 neutrons,95 electrons 
D) 95 protons,146 neutrons,51 electrons 
E) 95 protons,241 neutrons,95 electrons 
A) 241 protons,95 neutrons,241 electrons 
B) 241 protons,95 neutrons,146 electrons 
C) 95 protons,146 neutrons,95 electrons 
D) 95 protons,146 neutrons,51 electrons 
E) 95 protons,241 neutrons,95 electrons

Question 9

How many valence electrons are in Na,O and He,respectively?

Accepted Answer

A) 1,6,8 
B) 11,8,8 
C) 1,6,2 
D) 11,8,2 
E) 2,4,2 
A) 1,6,8 
B) 11,8,8 
C) 1,6,2 
D) 11,8,2 
E) 2,4,2

Question 10

Atoms with the biggest radii occur in the ________ region of the periodic table.

Accepted Answer

A) bottom left 
B) top right 
C) bottom right 
D) top left 
E) middle 
A) bottom left 
B) top right 
C) bottom right 
D) top left 
E) middle

Question 11

What requirement must be met in order for two electrons to coexist in the same orbital?

Accepted Answer

A) The electrons must have different energies. 
B) The electrons must have the same spin. 
C) The electrons must have opposite charges. 
D) The electrons must be in different principle energy levels. 
E) The electrons must have opposite spins. 
A) The electrons must have different energies. 
B) The electrons must have the same spin. 
C) The electrons must have opposite charges. 
D) The electrons must be in different principle energy levels. 
E) The electrons must have opposite spins.

Question 12

Which ion is NOT isoelectronic (i.e.has the same electron configuration)with Ar? The electron configuration of Ar is shown. $\begin{array} { |l | l| } 
\hline \mathrm { S } & 1 s ^ { 2 } 2 s ^ { 2 } 2 p ^ { 6 } 3 s ^ { 2 } 3 p ^ { 4 }\
\hline  
\end{array}$

Accepted Answer

A) Cl? 
B) K+ 
C) Br? 
D) Ca2+ 
E) S2? 
A) Cl? 
B) K+ 
C) Br? 
D) Ca2+ 
E) S2?

Question 13

Who discovered that cathode rays consist of a stream of negative particles,electrons?

Accepted Answer

A) Crookes 
B) Thomson 
C) Geiger 
D) Rutherford 
E) Bohr 
A) Crookes 
B) Thomson 
C) Geiger 
D) Rutherford 
E) Bohr

Question 14

The ion K+ is formed by which process?

Accepted Answer

A) loss of an electron by K 
B) gain of a proton by K 
C) loss of a proton by K 
D) gain of an electron by K 
E) None of these are correct. 
A) loss of an electron by K 
B) gain of a proton by K 
C) loss of a proton by K 
D) gain of an electron by K 
E) None of these are correct.

Question 15

What term is used to describe atoms of the same element that have different masses?

Accepted Answer

A) radioactive 
B) constituents 
C) isotopes 
D) telomers 
E) isomers 
A) radioactive 
B) constituents 
C) isotopes 
D) telomers 
E) isomers

Question 16

How many orbitals are there in the second principal energy level?

Accepted Answer

A) 2 
B) 3 
C) 1 
D) 0 
E) 4 
A) 2 
B) 3 
C) 1 
D) 0 
E) 4

Question 17

Tungsten is a metal containing 74 protons,and is used widely in the electronics industry.What is the chemical symbol for tungsten?

Accepted Answer

A) T 
B) Tg 
C) Tn 
D) W 
E) As 
A) T 
B) Tg 
C) Tn 
D) W 
E) As

Question 18

An atom cannot be created,divided,destroyed,or converted to any other type of atom.

Accepted Answer

A) True 
 B)False

Question 19

Hydrogen can form two different ions: a hydrogen ion (H+),and a hydride ion (H−).Which statement concerning these ions is FALSE?

Accepted Answer

A) The H+ ion is a cation formed by the loss of one electron; this ion has no valence electrons. 
B) The H− ion is an anion formed by the gain of one electron; this ion has a full n=1 energy level. 
C) The hydrogen ion and the hydride ion are isotopes. 
D) The hydrogen ion and the hydride ion have the same number of protons. 
E) The hydrogen ion and the hydride ion have different sizes. 
A) The H+ ion is a cation formed by the loss of one electron; this ion has no valence electrons. 
B) The H− ion is an anion formed by the gain of one electron; this ion has a full n=1 energy level. 
C) The hydrogen ion and the hydride ion are isotopes. 
D) The hydrogen ion and the hydride ion have the same number of protons. 
E) The hydrogen ion and the hydride ion have different sizes.

Question 20

How many electrons are present in an atom of silicon?

Accepted Answer

A) 14 
B) 16 
C) 18 
D) 24 
E) 26 
A) 14 
B) 16 
C) 18 
D) 24 
E) 26

Exam 2: The Structure of the Atom and the Periodic Table

All atoms of a particular element have identical chemical properties.

The modern periodic law states that the physical and chemical properties of the elements are periodic functions of what property?

What is Rutherford's important contribution to our knowledge of atomic structure?

The atomic number of an atom indicates the number of protons that are present.

Valence electrons are involved when atoms form bonds.

Which of the following is a representative nonmetal?

Which of the following correctly gives the electron capacity of a principal energy level in terms of the number n?

Americium-241 is an isotope used in smoke detectors.What is the composition of a neutral atom of Americium-241?

How many valence electrons are in Na,O and He,respectively?

Atoms with the biggest radii occur in the ________ region of the periodic table.

What requirement must be met in order for two electrons to coexist in the same orbital?

Which ion is NOT isoelectronic (i.e.has the same electron configuration)with Ar? The electron configuration of Ar is shown. 12233

Who discovered that cathode rays consist of a stream of negative particles,electrons?

The ion K+ is formed by which process?

What term is used to describe atoms of the same element that have different masses?

How many orbitals are there in the second principal energy level?

Tungsten is a metal containing 74 protons,and is used widely in the electronics industry.What is the chemical symbol for tungsten?

An atom cannot be created,divided,destroyed,or converted to any other type of atom.

Hydrogen can form two different ions: a hydrogen ion (H+),and a hydride ion (H−).Which statement concerning these ions is FALSE?

How many electrons are present in an atom of silicon?

Chemistry - Methods and Measurement

Structure and Properties of Ionic and Covalent Compounds

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Solutions

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

The ion K⁺ is formed by which process?

Hydrogen can form two different ions: a hydrogen ion (H⁺),and a hydride ion (H⁻).Which statement concerning these ions is FALSE?