Question 1

If you could line up the nuclei of lead-208, approximately how many nuclei are required to form a line 1 inch long? Note that a nucleus of lead-208 has a diameter of 1.6 x 10-14 m.

Accepted Answer

A)  82 
B)  208 
C)  8.2 x 107 
D)  1.6 x 1012 
A)  82 
B)  208 
C)  8.2 x 107 
D)  1.6 x 1012

Question 2

Which of the following statements best characterizes the isotopes of an element?

Accepted Answer

A)  They have different numbers of electrons. 
B)  They have different numbers of neutrons. 
C)  They have different numbers of protons. 
D)  They have different numbers of protons, neutrons, and electrons. 
A)  They have different numbers of electrons. 
B)  They have different numbers of neutrons. 
C)  They have different numbers of protons. 
D)  They have different numbers of protons, neutrons, and electrons.

Question 3

Which of the following elements has the smallest atoms?

Accepted Answer

A)  Al 
B)  Mg 
C)  Na 
D)  None, they are all the same size. 
A)  Al 
B)  Mg 
C)  Na 
D)  None, they are all the same size.

Question 4

Which of the following elements is named after a planet?

Accepted Answer

A)  As 
B)  Er 
C)  U 
D)  V 
A)  As 
B)  Er 
C)  U 
D)  V

Question 5

Which of the following is the correct Lewis dot picture of the oxygen atom?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

Which of the following gives the correct order of ionization energies?

Accepted Answer

A)  Li < Na < K < Rb 
B)  Na < Mg < P < Cl 
C)  both Li < Na < K < Rb and Na < Mg < P < CI 
D)  neither Li < Na < K < Rb or Na < Mg < P < CI 
A)  Li < Na < K < Rb 
B)  Na < Mg < P < Cl 
C)  both Li < Na < K < Rb and Na < Mg < P < CI 
D)  neither Li < Na < K < Rb or Na < Mg < P < CI

Question 7

Which of the following columns of the periodic table does not contain any metallic elements?

Accepted Answer

A)  4A 
B)  5A 
C)  6A 
D)  7A 
A)  4A 
B)  5A 
C)  6A 
D)  7A

Question 8

How many unpaired electrons are there in a boron atom in its ground state?

Accepted Answer

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

Question 9

Which of the following sets of elements is not included in the main body of the periodic table and is shown separately at the bottom?

Accepted Answer

A)  halogens 
B)  noble gases 
C)  inner transition elements 
D)  main group elements 
A)  halogens 
B)  noble gases 
C)  inner transition elements 
D)  main group elements

Question 10

How many elements are there in period 2?

Accepted Answer

A)  2 
B)  6 
C)  8 
D)  18 
A)  2 
B)  6 
C)  8 
D)  18

Question 11

Which of the following elements is named after a continent?

Accepted Answer

A)  As 
B)  Au 
C)  Eu 
D)  all of these 
A)  As 
B)  Au 
C)  Eu 
D)  all of these

Question 12

How do ionization energies vary across a period from the left to the right of the periodic table?

Accepted Answer

A)  They consistently decrease. 
B)  They consistently increase. 
C)  They generally decrease, but there are some exceptions. 
D)  They generally increase, but there are some exceptions. 
A)  They consistently decrease. 
B)  They consistently increase. 
C)  They generally decrease, but there are some exceptions. 
D)  They generally increase, but there are some exceptions.

Question 13

When a sample of a particular solid is examined under a microscope, clearly distinguishable black and yellow regions are observed. Which type of matter is this sample?

Accepted Answer

A)  a compound 
B)  an element 
C)  a homogeneous mixture 
D)  a heterogeneous mixture 
A)  a compound 
B)  an element 
C)  a homogeneous mixture 
D)  a heterogeneous mixture

Question 14

Which statement is true of the electronic configurations of a family in the periodic table?

Accepted Answer

A)  The number of valence electrons is not equal to the group number. 
B)  The number of valence electrons is equal to the group number. 
C)  The valence electrons are always paired. 
D)  The valence electrons are never paired. 
A)  The number of valence electrons is not equal to the group number. 
B)  The number of valence electrons is equal to the group number. 
C)  The valence electrons are always paired. 
D)  The valence electrons are never paired.

Question 15

Electrons can sometimes fill orbitals in manners that defy specified rules. If they do so, we say that the atom is in an excited state. Which of the following represents the excited state of an atom?

Accepted Answer

A)  1s22s22px2 
B)  1s22s12px12py12pz1 
C)  both 1s22s22px2 and 1s22s12px12py12pz1 
D)  neither 1s22s22px2 nor 1s22s12px12py12pz1 
A)  1s22s22px2 
B)  1s22s12px12py12pz1 
C)  both 1s22s22px2 and 1s22s12px12py12pz1 
D)  neither 1s22s22px2 nor 1s22s12px12py12pz1

Question 16

Which of the following gives the correct order of ionization energies?

Accepted Answer

A) Li > Na > K > Rb B) Na Na > K > Rb and Na Na > K > Rb or Na < Mg < P < CI A) Li > Na > K > Rb B) Na Na > K > Rb and Na Na > K > Rb or Na < Mg < P < CI

Question 17

Which of the following correctly represents the electronic configuration of sulfur?

Accepted Answer

A)  1s22s22p63s23p4 
B)  1s22s22p63s23px23py13pz1 
C)  [Ne]3s23p4 
D)  all of them 
A)  1s22s22p63s23p4 
B)  1s22s22p63s23px23py13pz1 
C)  [Ne]3s23p4 
D)  all of them

Question 18

Which of the following is true of the atomic weight of an element?

Accepted Answer

A)  It is the weight of the heaviest isotope. 
B)  It is the weight of the lightest isotope. 
C)  It is the weight of the most abundant isotope. 
D)  It is a weighted average obtained from the weights and abundances of the isotopes. 
A)  It is the weight of the heaviest isotope. 
B)  It is the weight of the lightest isotope. 
C)  It is the weight of the most abundant isotope. 
D)  It is a weighted average obtained from the weights and abundances of the isotopes.

Question 19

Which of the following sets of alphabets is used to designate subshells?

Accepted Answer

A)  t, q, e, and g 
B)  s, p, d, and f 
C)  r, o, c, and e 
D)  q, n, b, and d 
A)  t, q, e, and g 
B)  s, p, d, and f 
C)  r, o, c, and e 
D)  q, n, b, and d

Question 20

Which of the following is the correct Lewis dot picture of the nitrogen atom?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Exam 2: Atoms

If you could line up the nuclei of lead-208, approximately how many nuclei are required to form a line 1 inch long? Note that a nucleus of lead-208 has a diameter of 1.6 x 10-14 m.

Which of the following statements best characterizes the isotopes of an element?

Which of the following elements has the smallest atoms?

Which of the following elements is named after a planet?

Which of the following is the correct Lewis dot picture of the oxygen atom?

Which of the following gives the correct order of ionization energies?

Which of the following columns of the periodic table does not contain any metallic elements?

How many unpaired electrons are there in a boron atom in its ground state?

Which of the following sets of elements is not included in the main body of the periodic table and is shown separately at the bottom?

How many elements are there in period 2?

Which of the following elements is named after a continent?

How do ionization energies vary across a period from the left to the right of the periodic table?

When a sample of a particular solid is examined under a microscope, clearly distinguishable black and yellow regions are observed. Which type of matter is this sample?

Which statement is true of the electronic configurations of a family in the periodic table?

Electrons can sometimes fill orbitals in manners that defy specified rules. If they do so, we say that the atom is in an excited state. Which of the following represents the excited state of an atom?

Which of the following gives the correct order of ionization energies?

Which of the following correctly represents the electronic configuration of sulfur?

Which of the following is true of the atomic weight of an element?

Which of the following sets of alphabets is used to designate subshells?

Which of the following is the correct Lewis dot picture of the nitrogen atom?

Matter, Energy, and Measurement

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

If you could line up the nuclei of lead-208, approximately how many nuclei are required to form a line 1 inch long? Note that a nucleus of lead-208 has a diameter of 1.6 x 10^-14 m.