Question 1

What term best describes the shape of a p orbital?

Accepted Answer

A)  sphere
B)  dumbbell
C)  clover
D)  ellipse
E)  waveF) B) and D)
G) B) and E)

Question 2

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂?

Accepted Answer

A)  Ca
B)  Mg
C)  Na
D)  Si
E)  none of the aboveF) All of the above
G) B) and E)

Question 3

Which of the following orbitals is the highest energy?

Accepted Answer

A)  2px
B)  3px
C)  4px
D)  5px
E)  all px orbitals are the same energyF) A) and D)
G) C) and D)

Question 4

Which subatomic particle has a relative charge of 0 and a mass of ~1 amu?

Accepted Answer

A)  alpha
B)  electron
C)  neutron
D)  proton
E)  none of the aboveF) A) and B)
G) A) and C)

Question 5

What is the neutral subatomic particle having an approximate mass of 1 amu?

Accepted Answer

A)  electron
B)  neutron
C)  proton
D)  quark
E)  none of the aboveF) C) and D)
G) B) and C)

Question 6

What is the assigned mass of the reference isotope for the atomic mass scale?

Accepted Answer

A)  1.01 amu
B)  4.00 amu
C)  12.01 amu
D)  16.00 amu
E)  12 amu exactlyF) B) and E)
G) C) and D)

Question 7

Which of the following of Dalton's proposals is still valid?

Accepted Answer

A)  Atoms of different elements combine to form compounds.
B)  Atoms can combine in small whole number ratios.
C)  Atoms can combine in more than one whole number ratio.
D)  all of the above
E)  none of the aboveF) A) and B)
G) All of the above

Question 8

Which of the following statements is true?

Accepted Answer

A)  Dalton proposed a "particle model" of matter.
B)  Thomson proposed a "plum pudding model" of the atom.
C)  Rutherford proposed a "nuclear model" of the atom.
D)  Bohr proposed a "planetary model" of the atom.
E)  all of the above.F) All of the above
G) A) and C)

Question 9

What is the term for the value which indicates the total number of protons and neutrons in an atom of a given element?

Accepted Answer

A)  atomic notation
B)  atomic number
C)  atomic mass
D)  mass number
E)  none of the aboveF) A) and E)
G) None of the above

Question 10

What is the systematic name for heavy water?

Accepted Answer

A)  deuterium oxide
B)  deuterium water
C)  tritium oxide
D)  tritium water
E)  none of the aboveF) A) and E)
G) None of the above

Question 11

Given that the only naturally occurring isotope of aluminum is 27Al,what is its isotopic mass? (Hint: Refer to the Periodic Table. )

Accepted Answer

A)  13.00 amu
B)  13.98 amu
C)  14.00 amu
D)  26.98 amu
E)  39.98 amuF) D) and E)
G) None of the above

Question 12

What is the term for the statement that it is impossible to precisely measure both the location and energy of a particle at the same time?

Accepted Answer

A)  exclusion principle
B)  quantum principle
C)  spectrum rule
D)  uncertainty principle
E)  none of the aboveF) C) and D)
G) A) and B)

Question 13

What is the term for a unit of mass exactly equal to 1/12 the mass of a carbon-12 atom?

Accepted Answer

A)  atomic mass unit
B)  hydrogen atom
C)  neutron
D)  proton
E)  none of the aboveF) A) and B)
G) A) and C)

Question 14

What is the term for light energy that appears violet to red?

Accepted Answer

A)  infrared spectrum
B)  radiant energy spectrum
C)  ultraviolet spectrum
D)  visible spectrum
E)  none of the aboveF) C) and D)
G) A) and B)

Question 15

What is the general term that refers to either visible or invisible radiant energy?

Accepted Answer

A)  continuous spectrum
B)  emission spectrum
C)  line spectrum
D)  light
E)  none of the aboveF) B) and E)
G) None of the above

Question 16

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 3 to 1?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  none of the aboveF) B) and D)
G) A) and E)

Question 17

Which of the following instruments produces quantized musical notes?

Accepted Answer

A)  cello
B)  guitar
C)  piano
D)  violin
E)  all of the aboveF) A) and E)
G) A) and B)

Question 18

Which subatomic particle has a relative charge of -1 and a mass of ~0 amu?

Accepted Answer

A)  alpha
B)  electron
C)  neutron
D)  proton
E)  none of the aboveF) A) and D)
G) A) and C)

Question 19

What is the term for the range of light energy extending from short wavelength gamma rays to long wavelength microwaves?

Accepted Answer

A)  gamma ray spectrum
B)  microwave spectrum
C)  radiant energy spectrum
D)  visible spectrum
E)  none of the aboveF) C) and D)
G) A) and B)

Question 20

Why are atomic masses expressed on a relative atomic mass scale?

Accepted Answer

A)  Atoms are electrically positive.
B)  Atoms are electrically neutral.
C)  Atoms are too reactive to weigh directly.
D)  Atoms are too small to weigh directly.
E)  none of the aboveF) B) and E)
G) A) and D)

Exam 4: Models of the Atom

Which subatomic particle has a relative charge of -1 and a mass of ~0 amu?

Correct AnswerverifiedShow Answer

What is the neutral subatomic particle having an approximate mass of 1 amu?

Correct AnswerverifiedShow Answer

Why are atomic masses expressed on a relative atomic mass scale?

Correct AnswerverifiedShow Answer

What is the term for light energy that appears violet to red?

Correct AnswerverifiedShow Answer

What is the general term that refers to either visible or invisible radiant energy?

Correct AnswerverifiedShow Answer

Which subatomic particle has a relative charge of 0 and a mass of ~1 amu?

Correct AnswerverifiedShow Answer

What is the term for the range of light energy extending from short wavelength gamma rays to long wavelength microwaves?

Correct AnswerverifiedShow Answer

What is the term for a unit of mass exactly equal to 1/12 the mass of a carbon-12 atom?

Correct AnswerverifiedShow Answer

Which of the following orbitals is the highest energy?

Correct AnswerverifiedShow Answer

Which element has the following electron configuration: 1S₂ 2S₂ 2p6 3S₂?

Correct AnswerverifiedShow Answer

Which of the following instruments produces quantized musical notes?

Correct AnswerverifiedShow Answer

What term best describes the shape of a p orbital?

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

What is the systematic name for heavy water?

Correct AnswerverifiedShow Answer

What is the assigned mass of the reference isotope for the atomic mass scale?

Correct AnswerverifiedShow Answer

What is the term for the statement that it is impossible to precisely measure both the location and energy of a particle at the same time?

Correct AnswerverifiedShow Answer

Which of the following of Dalton's proposals is still valid?

Correct AnswerverifiedShow Answer

How many photons of light are emitted when the electron in a hydrogen atom drops from energy level 3 to 1?

Correct AnswerverifiedShow Answer

Given that the only naturally occurring isotope of aluminum is 27Al,what is its isotopic mass? (Hint: Refer to the Periodic Table. )

Correct AnswerverifiedShow Answer

What is the term for the value which indicates the total number of protons and neutrons in an atom of a given element?

Correct AnswerverifiedShow Answer

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