Question 1

Which of the following gases would diffuse the slowest through an extremely fine membrane?

Accepted Answer

A) He 
B) O2 
C) N2 
D) F2 
E) All of the above would diffuse at the same rate. 
A) He 
B) O2 
C) N2 
D) F2 
E) All of the above would diffuse at the same rate.

Question 2

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

Question 3

How might the spectrum of an atom appear if its electrons were not restricted to particular energy levels?

Accepted Answer

A) It would appear nearly the same as it does with the energy level restrictions. 
B) There would be no frequencies within the visible portion of the electromagnetic spectrum. 
C) A broad spectrum of all colors would be observed. 
D) The frequency of the spectral lines would change with temperature. 
A) It would appear nearly the same as it does with the energy level restrictions. 
B) There would be no frequencies within the visible portion of the electromagnetic spectrum. 
C) A broad spectrum of all colors would be observed. 
D) The frequency of the spectral lines would change with temperature.

Question 4

Which of the following could best be represented by a physical model?

Accepted Answer

A) a cell 
B) an atom 
C) rationality 
D) ecosystem 
E) both A and B 
A) a cell 
B) an atom 
C) rationality 
D) ecosystem 
E) both A and B

Question 5

In Rutherford's gold foil experiment, alpha particles ________.

Accepted Answer

A) passed through the atomic nucleus 
B) touched the atomic nucleus 
C) were deflected by the atomic nucleus 
D) were invisible to the atomic nucleus 
A) passed through the atomic nucleus 
B) touched the atomic nucleus 
C) were deflected by the atomic nucleus 
D) were invisible to the atomic nucleus

Question 6

How are frequency and wavelength related?

Accepted Answer

A) The higher the frequency the lower the wavelength. 
B) The larger the wavelength the higher the frequency. 
C) The lower the frequency the lower the wavelength. 
D) wavelength = frequency 
E) none of the above 
A) The higher the frequency the lower the wavelength. 
B) The larger the wavelength the higher the frequency. 
C) The lower the frequency the lower the wavelength. 
D) wavelength = frequency 
E) none of the above

Question 7

Which of the following experiments helped to determine the charge of an electron and (indirectly)its mass?

Accepted Answer

A) J.J. Thompson's cathode ray deflection experiments 
B) R. Millikan's oil drop experiments 
C) E. Rutherford's gold foil experiments 
D) Avogadro's number experiments 
E) Franklin's kite experiments 
A) J.J. Thompson's cathode ray deflection experiments 
B) R. Millikan's oil drop experiments 
C) E. Rutherford's gold foil experiments 
D) Avogadro's number experiments 
E) Franklin's kite experiments

Question 8

Which of the following does not describe a neutron?

Accepted Answer

A) It has a positive charge equivalent but opposite of an electron's. 
B) It is much more massive than an electron. 
C) It is a nucleon. 
D) It is often associated with protons. 
E) It is more difficult to detect than a proton or an electron. 
A) It has a positive charge equivalent but opposite of an electron's. 
B) It is much more massive than an electron. 
C) It is a nucleon. 
D) It is often associated with protons. 
E) It is more difficult to detect than a proton or an electron.

Question 9

What is the difference between radiation and electromagnetic radiation?

Accepted Answer

A) Radiation is from decay of nuclei while electromagnetic radiation is any form of light. 
B) Radiation is particles while electromagnetic radiation is a wave. 
C) Radiation can be blocked by lead plates while electromagnetic radiation cannot be. 
D) Radiation is waves while electromagnetic radiation is a particle. 
E) Radiation is damaging to living tissue while electromagnetic radiation has no effect on living tissue. 
A) Radiation is from decay of nuclei while electromagnetic radiation is any form of light. 
B) Radiation is particles while electromagnetic radiation is a wave. 
C) Radiation can be blocked by lead plates while electromagnetic radiation cannot be. 
D) Radiation is waves while electromagnetic radiation is a particle. 
E) Radiation is damaging to living tissue while electromagnetic radiation has no effect on living tissue.

Question 10

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 11

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 
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 12

Would you use a physical model or a conceptual model to describe the following: the brain; the mind; the solar system; the beginning of the universe?

Accepted Answer

A) conceptual; physical; conceptual physical 
B) conceptual; conceptual; conceptual; conceptual 
C) physical; conceptual; physical; conceptual 
D) physical; physical; physical; physical 
A) conceptual; physical; conceptual physical 
B) conceptual; conceptual; conceptual; conceptual 
C) physical; conceptual; physical; conceptual 
D) physical; physical; physical; physical

Question 13

Oxygen, O, (number 8), sulfur, S, (number 16), and selenium, Se, (number 34)have such similar chemical properties because ________.

Accepted Answer

A) their outermost shells contain the same number of electrons 
B) because they are all located close to one another in the periodic table 
C) they all have the same number of occupied shells 
D) These elements can't have similar chemical properties because they are in different periods of the periodic table 
A) their outermost shells contain the same number of electrons 
B) because they are all located close to one another in the periodic table 
C) they all have the same number of occupied shells 
D) These elements can't have similar chemical properties because they are in different periods of the periodic table

Question 14

If you remove two protons and two neutrons from a gold atom (Au), what new element is formed?

Accepted Answer

A) Ir2- 
B) Au 
C) Re 
D) Au2- 
E) Tl 
A) Ir2- 
B) Au 
C) Re 
D) Au2- 
E) Tl

Question 15

What is the effective nuclear charge for an electron in the outermost shell of a fluorine atom, F (atomic number 9)? How about one in the outermost shell of a sulfur atom, S (atomic number 16)?

Accepted Answer

A) 5; 6 
B) 7; 6 
C) 7; 8 
D) 7; 14 
A) 5; 6 
B) 7; 6 
C) 7; 8 
D) 7; 14

Question 16

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

Question 17

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

Question 18

Which element has the atomic number 9?

Accepted Answer

A) F 
B) Ne 
C) B 
D) Na 
E) Be 
A) F 
B) Ne 
C) B 
D) Na 
E) Be

Question 19

What prompted early scientists to propose that the ray of the cathode ray tube was due to the cathode?

Accepted Answer

A) The ray was present regardless of gas, or even without a gas. 
B) The ray was attracted to positively charge electric plates. 
C) The ray was not seen from the positively charged anode. 
D) The ray could be diverted by a magnetic field. 
E) The ray would change colors depending on which gas was used inside the tube. 
A) The ray was present regardless of gas, or even without a gas. 
B) The ray was attracted to positively charge electric plates. 
C) The ray was not seen from the positively charged anode. 
D) The ray could be diverted by a magnetic field. 
E) The ray would change colors depending on which gas was used inside the tube.

Question 20

Which of the following experiments helped to determine that most of an atom is actually empty space except for a very small positive core?

Accepted Answer

A) J.J. Thompson's cathode ray deflection experiments 
B) R. Millikan's oil drop experiments 
C) E. Rutherford's gold foil experiments 
D) Avogadro's number experiments 
E) Franklin's kite experiments 
A) J.J. Thompson's cathode ray deflection experiments 
B) R. Millikan's oil drop experiments 
C) E. Rutherford's gold foil experiments 
D) Avogadro's number experiments 
E) Franklin's kite experiments

Which of the following gases would diffuse the slowest through an extremely fine membrane?

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

How might the spectrum of an atom appear if its electrons were not restricted to particular energy levels?

Which of the following could best be represented by a physical model?

In Rutherford's gold foil experiment, alpha particles ________.

How are frequency and wavelength related?

Which of the following experiments helped to determine the charge of an electron and (indirectly)its mass?

Which of the following does not describe a neutron?

What is the difference between radiation and electromagnetic radiation?

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?

Which of the following is a property of light?

Would you use a physical model or a conceptual model to describe the following: the brain; the mind; the solar system; the beginning of the universe?

Oxygen, O, (number 8), sulfur, S, (number 16), and selenium, Se, (number 34)have such similar chemical properties because ________.

If you remove two protons and two neutrons from a gold atom (Au), what new element is formed?

What is the effective nuclear charge for an electron in the outermost shell of a fluorine atom, F (atomic number 9)? How about one in the outermost shell of a sulfur atom, S (atomic number 16)?

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

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

Which element has the atomic number 9?

What prompted early scientists to propose that the ray of the cathode ray tube was due to the cathode?

Which of the following experiments helped to determine that most of an atom is actually empty space except for a very small positive core?

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Exam 4: Subatomic Particles

Which of the following gases would diffuse the slowest through an extremely fine membrane?

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

How might the spectrum of an atom appear if its electrons were not restricted to particular energy levels?

Which of the following could best be represented by a physical model?

In Rutherford's gold foil experiment, alpha particles ________.

How are frequency and wavelength related?

Which of the following experiments helped to determine the charge of an electron and (indirectly)its mass?

Which of the following does not describe a neutron?

What is the difference between radiation and electromagnetic radiation?

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?

Which of the following is a property of light?

Would you use a physical model or a conceptual model to describe the following: the brain; the mind; the solar system; the beginning of the universe?

Oxygen, O, (number 8), sulfur, S, (number 16), and selenium, Se, (number 34)have such similar chemical properties because ________.

If you remove two protons and two neutrons from a gold atom (Au), what new element is formed?

What is the effective nuclear charge for an electron in the outermost shell of a fluorine atom, F (atomic number 9)? How about one in the outermost shell of a sulfur atom, S (atomic number 16)?

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

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

Which element has the atomic number 9?

What prompted early scientists to propose that the ray of the cathode ray tube was due to the cathode?

Which of the following experiments helped to determine that most of an atom is actually empty space except for a very small positive core?

About Science

Particles of Matter

Elements of Chemistry

The Atomic Nucleus

How Atoms Bond

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters