Question 1

The atomic number of an atom is equal to which of the following?

Accepted Answer

A)  the number of protons in the atom 
B)  the number of neutrons in the atom 
C)  the total number of protons and neutrons in the atom 
D)  the total number of protons, neutrons and electrons in the atom 
A)  the number of protons in the atom 
B)  the number of neutrons in the atom 
C)  the total number of protons and neutrons in the atom 
D)  the total number of protons, neutrons and electrons in the atom

Question 2

Which Greek philosopher thought that matter was infinitely divisible?

Accepted Answer

A)  Aristotle 
B)  Democritus 
C)  Plato 
D)  Zeno 
A)  Aristotle 
B)  Democritus 
C)  Plato 
D)  Zeno

Question 3

Which of the chemical elements has the highest ionization energy?

Accepted Answer

A)  F 
B)  H 
C)  He 
D)  U 
A)  F 
B)  H 
C)  He 
D)  U

Question 4

The mass number of an atom is equal to which of the following?

Accepted Answer

A)  the number of protons in the atom 
B)  the number of neutrons in the atom 
C)  the total number of protons and neutrons in the atom 
D)  the total number of protons, neutrons and electrons in the atom 
A)  the number of protons in the atom 
B)  the number of neutrons in the atom 
C)  the total number of protons and neutrons in the atom 
D)  the total number of protons, neutrons and electrons in the atom

Question 5

Atoms of which of the following elements are smallest?

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 6

Which of the following statements describe properties of orbitals?

Accepted Answer

A)  Orbitals fill in the order of increasing energy from lowest to highest. 
B)  Each orbital can hold up to two electrons with opposite spins. 
C)  When there is a set of orbitals of equal energy each orbital becomes half filled before any of them becomes completely filled. 
D)  all of the above 
A)  Orbitals fill in the order of increasing energy from lowest to highest. 
B)  Each orbital can hold up to two electrons with opposite spins. 
C)  When there is a set of orbitals of equal energy each orbital becomes half filled before any of them becomes completely filled. 
D)  all of the above

Question 7

In comparing sodium and potassium which of the following statements is true?

Accepted Answer

A)  Sodium is more likely to lose an electron than potassium because sodium has a higher ionization energy than potassium. 
B)  Sodium is more likely to lose an electron than potassium because sodium has a lower ionization energy than potassium. 
C)  Sodium is less likely to lose an electron than potassium because sodium has a higher ionization energy than potassium. 
D)  Sodium is less likely to lose an electron than potassium because sodium has a lower ionization energy than potassium. 
A)  Sodium is more likely to lose an electron than potassium because sodium has a higher ionization energy than potassium. 
B)  Sodium is more likely to lose an electron than potassium because sodium has a lower ionization energy than potassium. 
C)  Sodium is less likely to lose an electron than potassium because sodium has a higher ionization energy than potassium. 
D)  Sodium is less likely to lose an electron than potassium because sodium has a lower ionization energy than potassium.

Question 8

The mass of an electron is approximately which of the following?

Accepted Answer

A)  1 amu 
B)  1 g 
C)  0.0005 amu 
D)  0.0005 g 
A)  1 amu 
B)  1 g 
C)  0.0005 amu 
D)  0.0005 g

Question 9

Which of the following elements is named for a city?

Accepted Answer

A)  B 
B)  Be 
C)  Bi 
D)  Bk 
A)  B 
B)  Be 
C)  Bi 
D)  Bk

Question 10

How many orbitals are there in the 3d subshell?

Accepted Answer

A)  3 
B)  5 
C)  7 
D)  8 
A)  3 
B)  5 
C)  7 
D)  8

Question 11

A number of elements occur naturally as diatomic molecules under normal atmospheric conditions. Which of the following does not occur naturally as a diatomic molecule?

Accepted Answer

A)  chlorine 
B)  hydrogen 
C)  nitrogen 
D)  sulfur 
A)  chlorine 
B)  hydrogen 
C)  nitrogen 
D)  sulfur

Question 12

Which of the following is the reason that strontium-90 is considered an especially dangerous radioactive isotope?

Accepted Answer

A)  It has an exceptionally short half-life. 
B)  It has an exceptionally intense radioactivity. 
C)  It is chemically incorporated into bone and teeth and is therefore not readily eliminated from the body. 
D)  all of the above 
A)  It has an exceptionally short half-life. 
B)  It has an exceptionally intense radioactivity. 
C)  It is chemically incorporated into bone and teeth and is therefore not readily eliminated from the body. 
D)  all of the above

Question 13

When potassium loses an electron to form K+, which electron is lost?

Accepted Answer

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

Question 14

Which of the following give(s) the correct order of ionization energies?

Accepted Answer

A)  Li > Na > K > Rb 
B)  Na > Mg > P > Cl 
C)  both a and b 
D)  neither a nor b 
A)  Li > Na > K > Rb 
B)  Na > Mg > P > Cl 
C)  both a and b 
D)  neither a nor b

Question 15

The name of which Greek philosopher is most closely associated with the concept of an atom?

Accepted Answer

A)  Aristotle 
B)  Democritus 
C)  Plato 
D)  Zeno 
A)  Aristotle 
B)  Democritus 
C)  Plato 
D)  Zeno

Question 16

Which of the following is true when comparing two electrons which are in different shells of an atom?

Accepted Answer

A)  The electron in the higher numbered shell is closer to the nucleus and is easier to remove. 
B)  The electron in the higher numbered shell is closer to the nucleus and is harder to remove. 
C)  The electron in the higher numbered shell is further from the nucleus and is easier to remove. 
D)  The electron in the higher numbered shell is further from the nucleus and is harder to remove. 
A)  The electron in the higher numbered shell is closer to the nucleus and is easier to remove. 
B)  The electron in the higher numbered shell is closer to the nucleus and is harder to remove. 
C)  The electron in the higher numbered shell is further from the nucleus and is easier to remove. 
D)  The electron in the higher numbered shell is further from the nucleus and is harder to remove.

Question 17

Which of the following is a metalloid?

Accepted Answer

A)  S 
B)  Si 
C)  Sn 
D)  Sr 
A)  S 
B)  Si 
C)  Sn 
D)  Sr

Question 18

If we consider the elements C, N, and O, which types of orbitals do these elements use in bonding?

Accepted Answer

A)  only s 
B)  only p 
C)  both s and p 
D)  s, p and d 
A)  only s 
B)  only p 
C)  both s and p 
D)  s, p and d

Question 19

Which of the following columns of the periodic table contains no metallic elements?

Accepted Answer

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

Question 20

In the regions of the periodic table associated with the main group elements which type of orbitals are being filled?

Accepted Answer

A)  s only 
B)  p only 
C)  s or p 
D)  d only 
A)  s only 
B)  p only 
C)  s or p 
D)  d only

Exam 2: Atoms

The atomic number of an atom is equal to which of the following?

Which Greek philosopher thought that matter was infinitely divisible?

Which of the chemical elements has the highest ionization energy?

The mass number of an atom is equal to which of the following?

Atoms of which of the following elements are smallest?

Which of the following statements describe properties of orbitals?

In comparing sodium and potassium which of the following statements is true?

The mass of an electron is approximately which of the following?

Which of the following elements is named for a city?

How many orbitals are there in the 3d subshell?

A number of elements occur naturally as diatomic molecules under normal atmospheric conditions. Which of the following does not occur naturally as a diatomic molecule?

Which of the following is the reason that strontium-90 is considered an especially dangerous radioactive isotope?

When potassium loses an electron to form K+, which electron is lost?

Which of the following give(s) the correct order of ionization energies?

The name of which Greek philosopher is most closely associated with the concept of an atom?

Which of the following is true when comparing two electrons which are in different shells of an atom?

Which of the following is a metalloid?

If we consider the elements C, N, and O, which types of orbitals do these elements use in bonding?

Which of the following columns of the periodic table contains no metallic elements?

In the regions of the periodic table associated with the main group elements which type of orbitals are being filled?

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 and Alkynes

Benzene and Its Derivatives

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

When potassium loses an electron to form K⁺, which electron is lost?