Question 1

The modern periodic table arranges the elements in order of

Accepted Answer

A)  year of discovery 
B)  decreasing size of the nucleus 
C)  increasing reactivity with oxygen 
D)  increasing number of protons 
A)  year of discovery 
B)  decreasing size of the nucleus 
C)  increasing reactivity with oxygen 
D)  increasing number of protons

Question 2

The quantity "A + Z" gives the number of

Accepted Answer

A)  electrons in an atom 
B)  neutrons in an atomic nucleus 
C)  nucleons in an atomic nucleus 
D)  all subatomic particles in an atom 
A)  electrons in an atom 
B)  neutrons in an atomic nucleus 
C)  nucleons in an atomic nucleus 
D)  all subatomic particles in an atom

Question 3

Choose the correct atom that has an atomic number of 17.

Accepted Answer

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

Question 4

Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1) The sum of the mass number and the atomic number for an atom corresponds to the total number of subatomic particles present in the atom.
(2) The element sulfur is both a nonmetal and a representative element.
(3) Elements with electron configurations that end in p4 would be found in group VIA of the periodic table.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 5

Element A exists in three isotopic forms with masses of 21.0, 25.0 and 26.0 amu, respectively. Element Q also exists in three isotopic forms with masses of 20, 24.0 and 25.0 amu, respectively. It is true that:

Accepted Answer

A)  Element A has a lower atomic mass than element Q since it has the lightest isotope. 
B)  Elements A and Q have identical atomic masses since the sums of their isotopic masses are equal. 
C)  Element Q has a higher atomic mass than element A since its atomic masses are closer together. 
D)  More than one correct response. 
E)  No correct response. 
A)  Element A has a lower atomic mass than element Q since it has the lightest isotope. 
B)  Elements A and Q have identical atomic masses since the sums of their isotopic masses are equal. 
C)  Element Q has a higher atomic mass than element A since its atomic masses are closer together. 
D)  More than one correct response. 
E)  No correct response.

Question 6

The elements in group IVA of the periodic table all have electron configurations ending in

Accepted Answer

A)  p2 
B)  p4 
C)  d4 
D)  s2 
A)  p2 
B)  p4 
C)  d4 
D)  s2

Question 7

Choose the appropriate electron configuration for an element that has five completely filled subshells.

Accepted Answer

A)  1s22s22p63s23p6 
B)  1s22s22p63s23p4 
C)  1s22s22p63s1 
D)  1s22s22p5 
A)  1s22s22p63s23p6 
B)  1s22s22p63s23p4 
C)  1s22s22p63s1 
D)  1s22s22p5

Question 8

Both a number and a letter are used in designating an electron subshell. The letter

Accepted Answer

A)  indicates the shell to which the subshell belongs 
B)  may be s, p, d, or f 
C)  gives information about the maximum number of electrons the subshell can contain 
D)  more than one correct response 
E)  no correct response 
A)  indicates the shell to which the subshell belongs 
B)  may be s, p, d, or f 
C)  gives information about the maximum number of electrons the subshell can contain 
D)  more than one correct response 
E)  no correct response

Question 9

Which of the following statements correctly characterizes the subatomic particle called a neutron?

Accepted Answer

A)  Its mass is less than that of an electron. 
B)  it has a negative charge 
C)  its mass is about that same as that of a proton 
D)  it contributes 25% of the mass of an atom 
A)  Its mass is less than that of an electron. 
B)  it has a negative charge 
C)  its mass is about that same as that of a proton 
D)  it contributes 25% of the mass of an atom

Question 10

Choose an appropriate pair of elements that are in the d area of the periodic table.

Accepted Answer

A)  (37Rb and 38Sr) 
B)  (7N and 82Pb) 
C)  (9F and 17Cl) 
D)  (42Mo and 75Re) 
A)  (37Rb and 38Sr) 
B)  (7N and 82Pb) 
C)  (9F and 17Cl) 
D)  (42Mo and 75Re)

The modern periodic table arranges the elements in order of

The quantity "A + Z" gives the number of

Choose the correct atom that has an atomic number of 17.

Element A exists in three isotopic forms with masses of 21.0, 25.0 and 26.0 amu, respectively. Element Q also exists in three isotopic forms with masses of 20, 24.0 and 25.0 amu, respectively. It is true that:

The elements in group IVA of the periodic table all have electron configurations ending in

Choose the appropriate electron configuration for an element that has five completely filled subshells.

Both a number and a letter are used in designating an electron subshell. The letter

Which of the following statements correctly characterizes the subatomic particle called a neutron?

Choose an appropriate pair of elements that are in the d area of the periodic table.

Basic Concepts About Matter

Measurements in Chemistry

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Acids, Bases, and Salts

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

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Exam 3: Atomic Structure and the Periodic Table

The modern periodic table arranges the elements in order of

The quantity "A + Z" gives the number of

Choose the correct atom that has an atomic number of 17.

Element A exists in three isotopic forms with masses of 21.0, 25.0 and 26.0 amu, respectively. Element Q also exists in three isotopic forms with masses of 20, 24.0 and 25.0 amu, respectively. It is true that:

The elements in group IVA of the periodic table all have electron configurations ending in

Choose the appropriate electron configuration for an element that has five completely filled subshells.

Both a number and a letter are used in designating an electron subshell. The letter

Which of the following statements correctly characterizes the subatomic particle called a neutron?

Choose an appropriate pair of elements that are in the d area of the periodic table.

Basic Concepts About Matter

Measurements in Chemistry

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Acids, Bases, and Salts

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

Filters