Question 1

Which of the following elements is an alkali metal?

Accepted Answer

A) argon (Ar) 
B) lead (Pb) 
C) cerium (Cr) 
D) indium (In) 
E) lithium (Li) 
A) argon (Ar) 
B) lead (Pb) 
C) cerium (Cr) 
D) indium (In) 
E) lithium (Li)

Question 2

What do the components of a conceptual model have in common?

Accepted Answer

A) All components interact with each other. 
B) All components are mutually independent of each other. 
C) The components have nothing in common.This is what differentiates a conceptual model from a physical model. 
D) Each component must correlate with a corresponding component of a physical model. 
A) All components interact with each other. 
B) All components are mutually independent of each other. 
C) The components have nothing in common.This is what differentiates a conceptual model from a physical model. 
D) Each component must correlate with a corresponding component of a physical model.

Question 3

Which of the following is not a nonmetal?

Accepted Answer

A) titanium (atomic no.= 22) 
B) sulfur (atomic no.= 16) 
C) selenium (atomic no.= 34) 
D) xenon (atomic no.= 54) 
E) helium (atomic no.= 2) 
A) titanium (atomic no.= 22) 
B) sulfur (atomic no.= 16) 
C) selenium (atomic no.= 34) 
D) xenon (atomic no.= 54) 
E) helium (atomic no.= 2)

Question 4

Which are older,the atoms in the body of an elderly person or those in the body of a baby?

Accepted Answer

A) A baby because this is surely a trick question. 
B) An elderly person because they have been around much longer. 
C) They are of the same age,which is appreciably older than the solar system. 
D) It depends upon their diet. 
A) A baby because this is surely a trick question. 
B) An elderly person because they have been around much longer. 
C) They are of the same age,which is appreciably older than the solar system. 
D) It depends upon their diet.

Question 5

Which contributes more to an atom's mass: electrons or protons? Which contributes more to an atom's size?

Accepted Answer

A) Protons contribute more to an atom's mass while electrons contribute more to its size. 
B) Electrons contribute more to an atom's mass while protons contribute more to its size. 
C) Protons contribute more to both the mass and size of an atom. 
D) Electrons contribute more to both the mass and size of an atom. 
A) Protons contribute more to an atom's mass while electrons contribute more to its size. 
B) Electrons contribute more to an atom's mass while protons contribute more to its size. 
C) Protons contribute more to both the mass and size of an atom. 
D) Electrons contribute more to both the mass and size of an atom.

Question 6

Which of the following might best explain the reason why electrons are restricted to certain energy levels in an atom?

Accepted Answer

A) They behave like restricted waves and are self-reinforcing. 
B) They are travelling at very high speeds. 
C) They are interacting with the light around the atom. 
D) They are out of phase and self-destruct when outside of distinct energy regions. 
E) They behave like chaotic waves of alternating frequency. 
A) They behave like restricted waves and are self-reinforcing. 
B) They are travelling at very high speeds. 
C) They are interacting with the light around the atom. 
D) They are out of phase and self-destruct when outside of distinct energy regions. 
E) They behave like chaotic waves of alternating frequency.

Question 7

Since atoms are mostly empty space,why don't objects pass through one another?

Accepted Answer

A) The electrons on the atoms repel other electrons on other atoms when they get close. 
B) The nucleus of one atom repels the nucleus of another atom when it gets close. 
C) The nucleus of one atom attracts the nucleus of a neighboring atom to form a barrier. 
D) The electrons of one attract the nucleus of a neighboring atom to form a barrier. 
A) The electrons on the atoms repel other electrons on other atoms when they get close. 
B) The nucleus of one atom repels the nucleus of another atom when it gets close. 
C) The nucleus of one atom attracts the nucleus of a neighboring atom to form a barrier. 
D) The electrons of one attract the nucleus of a neighboring atom to form a barrier.

Question 8

In some instances electromagnetic radiation behaves like a wave.In other instances electromagnetic radiation behaves more like a particle.Which behavior more accurately describes the true nature of electromagnetic radiation?

Accepted Answer

A) Particle behavior more accurately describes the true nature of electromagnetic radiation. 
B) Electromagnetic radiation behaves both as a wave or as a particle depending on the circumstance. 
C) Wave behavior more accurately describes the true nature of electromagnetic radiation. 
D) There is no circumstance in which electromagnetic radiation can be described as either portraying particle or wave behavior. 
A) Particle behavior more accurately describes the true nature of electromagnetic radiation. 
B) Electromagnetic radiation behaves both as a wave or as a particle depending on the circumstance. 
C) Wave behavior more accurately describes the true nature of electromagnetic radiation. 
D) There is no circumstance in which electromagnetic radiation can be described as either portraying particle or wave behavior.

Question 9

Light is emitted as an electron transitions from a higher energy state to a lower energy state.How long does it take for the actual transition to take place?

Accepted Answer

A) several seconds 
B) several microseconds 
C) several nanoseconds 
D) no time at all 
A) several seconds 
B) several microseconds 
C) several nanoseconds 
D) no time at all

Question 10

If a neutral element has 8 neutrons and 7 electrons,which expression correctly identifies the element?

Accepted Answer

A)  $\begin{array} { c } 
15 \
7
\end{array}$ N 
B)  $\begin{array} { c } 
8 \
15
\end{array}$ O 
C)  $\begin{array} { c } 
15 \
8
\end{array}$ O 
D)  $\begin{array} { c } 
7 \
8
\end{array}$ O 
E) cannot tell from information given 
A)  $\begin{array} { c } 
15 \
7
\end{array}$ N 
B)  $\begin{array} { c } 
8 \
15
\end{array}$ O 
C)  $\begin{array} { c } 
15 \
8
\end{array}$ O 
D)  $\begin{array} { c } 
7 \
8
\end{array}$ O 
E) cannot tell from information given

Question 11

Which atom is largest?

Accepted Answer

A) Rb 
B) K 
C) Na 
D) Li 
E) H 
A) Rb 
B) K 
C) Na 
D) Li 
E) H

Question 12

Some older cars vibrate loudly when driving at particular speeds.For example,at 65 mph the car may be most quiet,but at 60 mph the car rattles uncomfortably.How is this analogous to the quantized energy levels of an electron in an atom?

Accepted Answer

A) A car is designed for maximum performance at particular speeds under given road conditions.Likewise,electron energy level transitions are smooth if they occur while the atom is in a low energy state.Changing the speed of the car for the road conditions is similar to subjecting the atom to unusual energy conditions. 
B) New cars and small atoms don't share this behavior because modern technology produces better cars and small atoms don't have enough electrons to move among quantized energy levels to cause vibration. 
C) The vibrating car is analogous to one of the energy levels of the electron,which is the point at which the electron experiences resonance. 
D) There can be no analogy between a vibrating car and the quantized energy level of an electron in an atom since electrons don't vibrate.Doing so would cause the atom to break apart. 
A) A car is designed for maximum performance at particular speeds under given road conditions.Likewise,electron energy level transitions are smooth if they occur while the atom is in a low energy state.Changing the speed of the car for the road conditions is similar to subjecting the atom to unusual energy conditions. 
B) New cars and small atoms don't share this behavior because modern technology produces better cars and small atoms don't have enough electrons to move among quantized energy levels to cause vibration. 
C) The vibrating car is analogous to one of the energy levels of the electron,which is the point at which the electron experiences resonance. 
D) There can be no analogy between a vibrating car and the quantized energy level of an electron in an atom since electrons don't vibrate.Doing so would cause the atom to break apart.

Question 13

What are metalloids?

Accepted Answer

A) elements that have some properties like metals and some like nonmetals 
B) elements that are smaller than metals 
C) elements found in asteroids 
D) elements that are larger than nonmetals 
E) elements that have properties different than either the metals or the nonmetals 
A) elements that have some properties like metals and some like nonmetals 
B) elements that are smaller than metals 
C) elements found in asteroids 
D) elements that are larger than nonmetals 
E) elements that have properties different than either the metals or the nonmetals

Question 14

Which of the following statements describes an isotope?

Accepted Answer

A) element with the same number of protons but a different number of neutrons. 
B) element with the same number of protons but a different number of electrons. 
C) element with the same number of neutrons but a different number of electrons. 
D) element with the same number of neutrons but a different number of protons. 
E) none of the above 
A) element with the same number of protons but a different number of neutrons. 
B) element with the same number of protons but a different number of electrons. 
C) element with the same number of neutrons but a different number of electrons. 
D) element with the same number of neutrons but a different number of protons. 
E) none of the above

Question 15

What is the main tenet of Plank's quantum hypothesis?

Accepted Answer

A) Energy comes in discrete packets of a certain minimum size. 
B) Energy is composed of subatomic particles called quanta. 
C) Energy is a continuum,but light is quantized. 
D) Energy can be converted into matter through nuclear quanta. 
E) Light is composed of waves that exist only at certain quantum fundamental frequencies. 
A) Energy comes in discrete packets of a certain minimum size. 
B) Energy is composed of subatomic particles called quanta. 
C) Energy is a continuum,but light is quantized. 
D) Energy can be converted into matter through nuclear quanta. 
E) Light is composed of waves that exist only at certain quantum fundamental frequencies.

Question 16

The shell model is an example of a

Accepted Answer

A) physical model. 
B) conceptual model. 
C) both a physical and conceptual model. 
D) None of the above. 
A) physical model. 
B) conceptual model. 
C) both a physical and conceptual model. 
D) None of the above.

Question 17

What do the electron configurations for all the group 18 noble gases have in common?

Accepted Answer

A) They have the same number of electrons. 
B) They occupy the same number of shells. 
C) Their outermost occupied shells are filled to capacity. 
D) all of the above 
A) They have the same number of electrons. 
B) They occupy the same number of shells. 
C) Their outermost occupied shells are filled to capacity. 
D) all of the above

Question 18

Which of the following best describes a conceptual model of an atom?

Accepted Answer

A) a model that illustrates the tendency of an atom to undergo chemical bonding 
B) a model that illustrates the physical structure of the atom 
C) a model that represents the shape of the nucleus 
D) a description of the location of the neutrons and protons in an atom 
E) none of the above 
A) a model that illustrates the tendency of an atom to undergo chemical bonding 
B) a model that illustrates the physical structure of the atom 
C) a model that represents the shape of the nucleus 
D) a description of the location of the neutrons and protons in an atom 
E) none of the above

Question 19

If two protons and two neutrons are removed from the nucleus of an oxygen atom,a nucleus of which element remains?

Accepted Answer

A) nitrogen-12 
B) carbon-12 
C) neon-18 
D) carbon-14 
A) nitrogen-12 
B) carbon-12 
C) neon-18 
D) carbon-14

Question 20

How would you describe light generated by heating pure elements if it was observed through a prism or spectroscope?

Accepted Answer

A) You would see a series of very sharp lines of emitted light. 
B) You would see a rainbow of colors. 
C) Light is absorbed by heated elements so you would not see anything. 
D) You would see one line of emitted light,but it would be different for each element. 
E) none of the above 
A) You would see a series of very sharp lines of emitted light. 
B) You would see a rainbow of colors. 
C) Light is absorbed by heated elements so you would not see anything. 
D) You would see one line of emitted light,but it would be different for each element. 
E) none of the above

Exam 12: Atoms and the Periodic Table

Which of the following elements is an alkali metal?

What do the components of a conceptual model have in common?

Which of the following is not a nonmetal?

Which are older,the atoms in the body of an elderly person or those in the body of a baby?

Which contributes more to an atom's mass: electrons or protons? Which contributes more to an atom's size?

Which of the following might best explain the reason why electrons are restricted to certain energy levels in an atom?

Since atoms are mostly empty space,why don't objects pass through one another?

In some instances electromagnetic radiation behaves like a wave.In other instances electromagnetic radiation behaves more like a particle.Which behavior more accurately describes the true nature of electromagnetic radiation?

Light is emitted as an electron transitions from a higher energy state to a lower energy state.How long does it take for the actual transition to take place?

If a neutral element has 8 neutrons and 7 electrons,which expression correctly identifies the element?

Which atom is largest?

Some older cars vibrate loudly when driving at particular speeds.For example,at 65 mph the car may be most quiet,but at 60 mph the car rattles uncomfortably.How is this analogous to the quantized energy levels of an electron in an atom?

What are metalloids?

Which of the following statements describes an isotope?

What is the main tenet of Plank's quantum hypothesis?

The shell model is an example of a

What do the electron configurations for all the group 18 noble gases have in common?

Which of the following best describes a conceptual model of an atom?

If two protons and two neutrons are removed from the nucleus of an oxygen atom,a nucleus of which element remains?

How would you describe light generated by heating pure elements if it was observed through a prism or spectroscope?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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