Question 1

Which of the following statements does not describe a proton?

Accepted Answer

A)  It orbits around the nucleus of an atom.
B)  It has a positive charge equivalent but opposite of an electron's.
C)  It is much more massive than an electron.
D)  It is a nucleon.
E)  It is attracted to negatively charged electrical plates.

Question 2

The most massive subatomic particle is the

Accepted Answer

A)  electron.
B)  proton.
C)  neutron.
D)  nucleus.

Question 3

The following statement describes which subatomic particle best? It is located outside of the nucleus.

Accepted Answer

A)  an electron
B)  a proton
C)  a neutron
D)  A and B
E)  B and C

Question 4

Germanium,Ge (number 32) ,computer chips operate faster than silicon,Si (number 14) ,computer chips.So how might a gallium,Ga (number 31) ,chip compare with a germanium chip?

Accepted Answer

A)  A gallium chip would be even faster because the gallium is more metallic.
B)  A gallium chip would be slower because its electrons are more loosely held.
C)  Gallium is located just below aluminum,which is widely known to be an electrical insulator.
D)  Gallium is more nonmetallic and so it does not conduct electrons very well.

Question 5

Strontium,Sr (number 38) ,is especially dangerous to humans because it tends to accumulate in calcium-dependent bone marrow tissues (calcium,Ca,number 20) .This fact relates to the organization of the periodic table in that strontium and calcium are both

Accepted Answer

A)  metals.
B)  in group 2 of the periodic table.
C)  made of relatively large atoms.
D)  soluble in water.

Question 6

Why isn't dirt listed in the periodic table?

Accepted Answer

A)  The periodic table lists only elements made of one kind of material.Dirt is a mixture of elements and compounds.
B)  Elements like dirt and air are so common that there is no need to list them in the periodic table.
C)  Dirt IS listed in the periodic table but is not easily recognized because it is listed as one of the rare earths with its old scientific name,dysprosium,symbol Dy.
D)  None of the above is true.

Question 7

Which of the following physical properties would you expect for krypton (Kr) ?

Accepted Answer

A)  a gas at room temperature
B)  hard
C)  brittle
D)  shiny
E)  conducts electricity

Question 8

Suppose that a certain atom possesses only four distinct energy levels.Assuming that all transitions between levels are possible,how many spectral lines will this atom exhibit?

Accepted Answer

A)  three
B)  four
C)  six
D)  unlimited

Question 9

The following statement describes which subatomic particle best? It is a nucleon.

Accepted Answer

A)  an electron
B)  a proton
C)  a neutron
D)  A and B
E)  B and C

Question 10

Which of the following best explains what is happening when an atom emits light?

Accepted Answer

A)  An electron is dropping from a higher to a lower energy level with the difference in energy between the two being emitted as light.
B)  A proton is undergoing a nuclear change in the nucleus and is emitting a high energy light wave in the process.
C)  An electron is jumping from a low energy state to a high energy state with the difference in energy being converted to light.
D)  Heat energy is speeding up the orbit of the electrons and the resulting Doppler shift causes light to be emitted from the electrons.
E)  Heat energy is converting a neutron into a proton and an electron,which is ejected into the orbit of the nucleus,releasing light energy.

Question 11

The following statement describes which subatomic particle best? It is electrically charged.

Accepted Answer

A)  an electron
B)  a proton
C)  a neutron
D)  A and B
E)  B and C

Question 12

If a neutral element has the following chemical symbol,how many electrons does it have?  23592\begin{array} { c } 235 \92\end{array}23592​  U

Accepted Answer

A)  92
B)  82
C)  235
D)  143
E)  none of the above

Question 13

How many electrons are there in the third shell of sodium,Na (atomic number 11) ?

Accepted Answer

A)  none
B)  one
C)  two
D)  three

Question 14

How might you distinguish a sodium-vapor street lamp from a mercury-vapor street lamp?

Accepted Answer

A)  Use binoculars to look for printing adjacent to the bulb.
B)  Look at the street lamps through a spectroscope and match their spectral patterns to their respective atomic spectra.
C)  Ask your local utility company to identify these lamps for you.
D)  The shadows cast from a sodium-vapor street lamp tend to be more diffuse around the edges.

Question 15

Which of the following elements is a transition metal?

Accepted Answer

A)  xenon (Xe) 
B)  lead (Pb) 
C)  chlorine (Cl) 
D)  silver (Ag) 
E)  lithium (Li)

Question 16

Which of the following is a property of light?

Accepted Answer

A)  It is a wave.
B)  It is a particle.
C)  Its energy comes in packets of uniform size.
D)  all of the above
E)  none of the above

Question 17

The following statement describes which subatomic particle best? It has a relatively large mass.

Accepted Answer

A)  an electron
B)  a proton
C)  a neutron
D)  A and B
E)  B and C

Exam 12: Atoms and the Periodic Table

Strontium,Sr (number 38) ,is especially dangerous to humans because it tends to accumulate in calcium-dependent bone marrow tissues (calcium,Ca,number 20) .This fact relates to the organization of the periodic table in that strontium and calcium are both

Correct Answer
verified

Germanium,Ge (number 32) ,computer chips operate faster than silicon,Si (number 14) ,computer chips.So how might a gallium,Ga (number 31) ,chip compare with a germanium chip?

Correct Answer
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Suppose that a certain atom possesses only four distinct energy levels.Assuming that all transitions between levels are possible,how many spectral lines will this atom exhibit?

Correct Answer
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How might you distinguish a sodium-vapor street lamp from a mercury-vapor street lamp?

Correct Answer
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Which of the following elements is a transition metal?

Correct Answer
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If a neutral element has the following chemical symbol,how many electrons does it have? $\begin{array} { c } 235 \\92\end{array}$ U

Correct Answer
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Which of the following statements does not describe a proton?

Correct Answer
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Which of the following is a property of light?

Correct Answer
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The following statement describes which subatomic particle best? It is a nucleon.

Correct Answer
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Which of the following physical properties would you expect for krypton (Kr) ?

Correct Answer
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Which of the following best explains what is happening when an atom emits light?

Correct Answer
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Why isn't dirt listed in the periodic table?

Correct Answer
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The most massive subatomic particle is the

Correct Answer
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The following statement describes which subatomic particle best? It has a relatively large mass.

Correct Answer
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The following statement describes which subatomic particle best? It is located outside of the nucleus.

Correct Answer
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The following statement describes which subatomic particle best? It is electrically charged.

Correct Answer
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How many electrons are there in the third shell of sodium,Na (atomic number 11) ?

Correct Answer
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Exam 12: Atoms and the Periodic Table

Strontium,Sr (number 38) ,is especially dangerous to humans because it tends to accumulate in calcium-dependent bone marrow tissues (calcium,Ca,number 20) .This fact relates to the organization of the periodic table in that strontium and calcium are both

Correct AnswerverifiedShow Answer

Germanium,Ge (number 32) ,computer chips operate faster than silicon,Si (number 14) ,computer chips.So how might a gallium,Ga (number 31) ,chip compare with a germanium chip?

Correct AnswerverifiedShow Answer

Suppose that a certain atom possesses only four distinct energy levels.Assuming that all transitions between levels are possible,how many spectral lines will this atom exhibit?

Correct AnswerverifiedShow Answer

How might you distinguish a sodium-vapor street lamp from a mercury-vapor street lamp?

Correct AnswerverifiedShow Answer

Which of the following elements is a transition metal?

Correct AnswerverifiedShow Answer

If a neutral element has the following chemical symbol,how many electrons does it have? 23592\begin{array} { c } 235 \\92\end{array}23592​ U

Correct AnswerverifiedShow Answer

Which of the following statements does not describe a proton?

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Which of the following is a property of light?

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The following statement describes which subatomic particle best? It is a nucleon.

Correct AnswerverifiedShow Answer

Which of the following physical properties would you expect for krypton (Kr) ?

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Which of the following best explains what is happening when an atom emits light?

Correct AnswerverifiedShow Answer

Why isn't dirt listed in the periodic table?

Correct AnswerverifiedShow Answer

The most massive subatomic particle is the

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The following statement describes which subatomic particle best? It has a relatively large mass.

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The following statement describes which subatomic particle best? It is located outside of the nucleus.

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The following statement describes which subatomic particle best? It is electrically charged.

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How many electrons are there in the third shell of sodium,Na (atomic number 11) ?

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If a neutral element has the following chemical symbol,how many electrons does it have? $\begin{array} { c } 235 \\92\end{array}$ U

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