Question 1

What are the elements in the "B" columns of the period table called?

Accepted Answer

A)  main group elements 
B)  inner transition elements 
C)  metalloids 
D)  transition elements 
A)  main group elements 
B)  inner transition elements 
C)  metalloids 
D)  transition elements

Question 2

Atoms of which of the following elements are largest?

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 3

Which of the following is true about elements in the same horizontal row of the periodic table?

Accepted Answer

A)  The number of valence electrons remains the same throughout the row. 
B)  The number of valence electrons decreases as we move left to right across a row. 
C)  The number of valence electrons increases as we move left to right across a row. 
D)  There is no simple relationship between the number of valence electrons and the position of the element. 
A)  The number of valence electrons remains the same throughout the row. 
B)  The number of valence electrons decreases as we move left to right across a row. 
C)  The number of valence electrons increases as we move left to right across a row. 
D)  There is no simple relationship between the number of valence electrons and the position of the element.

Question 4

Which of the following has the highest ionization energy?

Accepted Answer

A)  Br 
B)  Cl 
C)  F 
D)  I 
A)  Br 
B)  Cl 
C)  F 
D)  I

Question 5

Which element is currently used to define the atomic mass unit?

Accepted Answer

A)  hydrogen-1 
B)  carbon-12 
C)  oxygen-16 
D)  none of these 
A)  hydrogen-1 
B)  carbon-12 
C)  oxygen-16 
D)  none of these

Question 6

Which of the following has the lowest ionization energy?

Accepted Answer

A)  Ba 
B)  Ca 
C)  Mg 
D)  Sr 
A)  Ba 
B)  Ca 
C)  Mg 
D)  Sr

Question 7

Which element accounts for nearly half the mass of the earth's crust?

Accepted Answer

A)  carbon 
B)  iron 
C)  oxygen 
D)  silicon 
A)  carbon 
B)  iron 
C)  oxygen 
D)  silicon

Question 8

The mass of a neutron is approximately which of the following?

Accepted Answer

A)  12 g 
B)  1 g 
C)  12 amu 
D)  1 amu 
A)  12 g 
B)  1 g 
C)  12 amu 
D)  1 amu

Question 9

Sodium chlorate, an ingredient in many common herbicides, has sodium, chlorine and oxygen atoms in the ratio 1:1:3. What is the correct formula for sodium chlorate?

Accepted Answer

A)  NaCO3 
B)  SoClO3 
C)  NaClO3 
D)  none of these 
A)  NaCO3 
B)  SoClO3 
C)  NaClO3 
D)  none of these

Question 10

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

Accepted Answer

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

Question 11

Which of the following sets of numbers could be used to designate the principal energy levels (shells) in an atom?

Accepted Answer

A)  -1, 0, 1, 2, 3 
B)  0, 1, 2, 3, 4 
C)  1, 2, 3, 4, 5 
D)  all of these 
A)  -1, 0, 1, 2, 3 
B)  0, 1, 2, 3, 4 
C)  1, 2, 3, 4, 5 
D)  all of these

Question 12

Sodium bicarbonate has sodium, hydrogen, carbon and oxygen atoms in the ratio 1:1:1:3. What is the correct formula for sodium bicarbonate?

Accepted Answer

A)  NaBiCO3 
B)  NaHCO3 
C)  SoHCO3 
D)  none of these 
A)  NaBiCO3 
B)  NaHCO3 
C)  SoHCO3 
D)  none of these

Question 13

Which of the following has the lowest ionization energy?

Accepted Answer

A)  Br 
B)  Cl 
C)  F 
D)  I 
A)  Br 
B)  Cl 
C)  F 
D)  I

Exam 2: Atoms

What are the elements in the "B" columns of the period table called?

Atoms of which of the following elements are largest?

Which of the following is true about elements in the same horizontal row of the periodic table?

Which of the following has the highest ionization energy?

Which element is currently used to define the atomic mass unit?

Which of the following has the lowest ionization energy?

Which element accounts for nearly half the mass of the earth's crust?

The mass of a neutron is approximately which of the following?

Sodium chlorate, an ingredient in many common herbicides, has sodium, chlorine and oxygen atoms in the ratio 1:1:3. What is the correct formula for sodium chlorate?

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

Which of the following sets of numbers could be used to designate the principal energy levels (shells) in an atom?

Sodium bicarbonate has sodium, hydrogen, carbon and oxygen atoms in the ratio 1:1:1:3. What is the correct formula for sodium bicarbonate?

Which of the following has the lowest ionization energy?

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