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Which of the following isotopes contains the most number of neutrons?


A) Which of the following isotopes contains the most number of neutrons? A) Rn B) Bi C) Fr D) Po E) Rn Rn
B) Which of the following isotopes contains the most number of neutrons? A) Rn B) Bi C) Fr D) Po E) Rn Bi
C) Which of the following isotopes contains the most number of neutrons? A) Rn B) Bi C) Fr D) Po E) Rn Fr
D) Which of the following isotopes contains the most number of neutrons? A) Rn B) Bi C) Fr D) Po E) Rn Po
E) Which of the following isotopes contains the most number of neutrons? A) Rn B) Bi C) Fr D) Po E) Rn Rn

F) A) and B)
G) A) and C)

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Nuclear fusion:


A) is the formation of heavier elements from lighter ones.
B) releases a larger amount of heat than nuclear fission.
C) is the energy source of the sun and stars.
D) produces non-radioactive elements.
E) all of the above

F) A) and E)
G) B) and E)

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A positron particle comes from the decay of a proton into a neutron and a positron.

A) True
B) False

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How was radioactivity discovered?


A) Rutherford was investigating the structure of Au atoms and discovered alpha particles.
B) Marie Curie was investigating the existence of uranic rays that occurred in some minerals.
C) Becquerel was studying X-rays and phosphorescence to see if they were related.
D) Benjamin Franklin was studying the creation of electrical current from the ionization of gases due to radioactive particles.
E) none of the above

F) C) and D)
G) All of the above

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What is the missing particle? What is the missing particle? A) positron B) beta particle C) alpha particle D) gamma particle E) none of the above


A) positron
B) beta particle
C) alpha particle
D) gamma particle
E) none of the above

F) B) and E)
G) A) and B)

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Acute radiation damage:


A) results from lower doses of radiation over extended periods of time.
B) results from exposure to lower amounts of radiation in a short period of time.
C) can result in death.
D) results in an increased chance of cancer.
E) all of the above

F) C) and D)
G) A) and E)

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What happens to the mass number of a nucleus that emits a positron?


A) It remains the same.
B) It increases by one.
C) It decreases by one.
D) It increases by two.
E) It decreases by two.

F) A) and B)
G) A) and C)

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In a Geiger-Muller counter,radioactive particles pass through NaI which emits UV-Vis light.

A) True
B) False

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The reaction The reaction H + H → He + neutron is an example of nuclear fission. H + The reaction H + H → He + neutron is an example of nuclear fission. H → The reaction H + H → He + neutron is an example of nuclear fission. He + The reaction H + H → He + neutron is an example of nuclear fission. neutron is an example of nuclear fission.

A) True
B) False

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Which of the following statements about beta particles is FALSE?


A) The symbol is: Which of the following statements about beta particles is FALSE? A) The symbol is: e. B) Beta particles are created when neutrons become protons and electrons. C) They have intermediate ionizing power. D) They have intermediate penetrating power. E) They are a safe form of radioactivity. e.
B) Beta particles are created when neutrons become protons and electrons.
C) They have intermediate ionizing power.
D) They have intermediate penetrating power.
E) They are a safe form of radioactivity.

F) B) and C)
G) A) and C)

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Nuclear power:


A) generates 20% of the electricity needed in the U.S.
B) generates heat which boils water and turns a steam turbine to produce electricity.
C) generates no air pollution or greenhouse gases.
D) uses almost no fuel compared to fossil fuel plants.
E) All of the above are true.

F) B) and E)
G) A) and D)

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A C-14 dating experiment revealed that an artifact had 50.0% of the activity of a modern organism.Given the half-life of C-14 is 5730 years,approximately how old is the artifact?


A) 28,650
B) 34,380
C) 22,920
D) 5,730
E) none of the above

F) C) and D)
G) B) and C)

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What is the missing particle? What is the missing particle? A) positron B) beta particle C) alpha particle D) gamma particle E) none of the above


A) positron
B) beta particle
C) alpha particle
D) gamma particle
E) none of the above

F) A) and D)
G) D) and E)

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Which statement about alpha particles is FALSE?


A) symbol is: Which statement about alpha particles is FALSE? A) symbol is: He B) has high ionization power C) has low penetrating power D) are a harmless form of radiation E) All of the above are true. He
B) has high ionization power
C) has low penetrating power
D) are a harmless form of radiation
E) All of the above are true.

F) A) and D)
G) A) and B)

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What is the main product when What is the main product when Th undergoes beta decay? A) Ra B) Ac C) Pa D) Th E) none of the above Th undergoes beta decay?


A) What is the main product when Th undergoes beta decay? A) Ra B) Ac C) Pa D) Th E) none of the above Ra
B) What is the main product when Th undergoes beta decay? A) Ra B) Ac C) Pa D) Th E) none of the above Ac
C) What is the main product when Th undergoes beta decay? A) Ra B) Ac C) Pa D) Th E) none of the above Pa
D) What is the main product when Th undergoes beta decay? A) Ra B) Ac C) Pa D) Th E) none of the above Th
E) none of the above

F) B) and C)
G) A) and B)

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