Question 1

Indicate whether each of the following is characteristic of the fission or fusion process.
-This nuclear process provides the energy of the Sun.

Accepted Answer

A)  both fission and fusion
B)  fusion
C)  fission

Question 2

Nuclear fusion does not occur naturally.

Accepted Answer

A) True 
 B)False

Question 3

What is missing in the nuclear reaction shown below?

10 
5
 B + 4
2 He ? 13
7 N + _____

Accepted Answer

A)   gamma radiation
B)   a positron
C)   a neutron
D)   an alpha particle
E)   a beta particle

Question 4

A sample of technetium-99m has an activity of 1.5 Ci. How many disintegrations occur in the technetium-99m sample in 5.0 sec?

Accepted Answer

A)   5.6 × 1011
B)   2.8 × 1011
C)   1.1 × 1010
D)   7.5
E)   2.0 × 10-10

Question 5

Indicate whether each of the following is characteristic of the fission or fusion process.
-A large nucleus is split into smaller nuclei.

Accepted Answer

A)  both fission and fusion
B)  fusion
C)  fission

Question 6

Choose the type of radiation from Column 2 that best matches each item in Column 1.
-
1 
1
 H

Accepted Answer

A)  beta particle
B)  neutron
C)  gamma ray
D)  positron
E)  protonF) alpha particle

Question 7

Gamma rays require the heaviest shielding of all the common types of nuclear radiation because gamma rays have the

Accepted Answer

A)   highest energy.
B)   most intense color.
C)   lowest energy.
D)   largest particles.
E)   heaviest particles.

Question 8

When a positron is emitted from the nucleus of an atom, the nuclear mass

Accepted Answer

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

Question 9

The nuclear reaction shown below is an example of what type of process? 
224
90 Th ? 220
88 Rn + 4
2 He

Accepted Answer

A)   fusion
B)   fission
C)   translation
D)   alpha emission
E)   beta emission

Question 10

The nuclear reaction 
126 
50
 Sn ? 
126
51
 Sb + ? is an example of

Accepted Answer

A)   fusion.
B)   fission.
C)   translation.
D)   alpha emission.
E)   beta emission.

Question 11

If the half-life of hydrogen-3 is 11.8 years, after two half-lives the radioactivity of a sample will be reduced to one-half of the original amount.

Accepted Answer

A) True 
 B)False

Question 12

A beta particle is emmited when Co-60 decays to Fe-60.

Accepted Answer

A) True 
 B)False

Question 13

Which is NOT a way to minimize your exposure to radiation?

Accepted Answer

A)   wearing a lead apron
B)   keeping a good distance
C)   standing behind a thick concrete wall
D)   wearing lead-lined gloves
E)   staying a longer time

Question 14

The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min?

Accepted Answer

A)   0.50 mg
B)   1.0 mg
C)   2.0 mg
D)   0.25 mg
E)   4.0 mg

Question 15

Nitrogen-17 is a beta emitter. What is the isotope produced in the radioactive decay?

Accepted Answer

A)   186 C
B)   135 B
C)   187 N
D)   139 F
E)   178 O

Question 16

What is the radioactive particle released in the following nuclear equation? 159
74 W ? 155
72 Hf + ?

Accepted Answer

A)   alpha particle
B)   beta particle
C)   gamma ray
D)   proton
E)   neutron

Question 17

$99 \mathrm {~m}$
43 Tc → 99
43 Tc + __________

Accepted Answer

The answer of $99 \mathrm {~m}$
43 Tc → 99
43 Tc...

Question 18

Choose the type of radiation from Column 2 that best matches each item in Column 1.
-Two small nuclei combine to form a larger nucleus.

Accepted Answer

A)  both fission and fusion
B)  fusion
C)  fission

Question 19

Exposure to radiation is unavoidable because some radioactive elements occur naturally.

Accepted Answer

A) True 
 B)False

Question 20

Choose the type of radiation from Column 2 that best matches each item in Column 1.
-1
0 n

Accepted Answer

A)  beta particle
B)  neutron
C)  gamma ray
D)  positron
E)  protonF) alpha particle

Exam 4: Nuclear Chemistry

Exposure to radiation is unavoidable because some radioactive elements occur naturally.

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Nitrogen-17 is a beta emitter. What is the isotope produced in the radioactive decay?

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The nuclear reaction shown below is an example of what type of process? 224 90 Th ? 220 88 Rn + 4 2 He

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Choose the type of radiation from Column 2 that best matches each item in Column 1. - 1 1 H

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What is missing in the nuclear reaction shown below? 10 5 B + 4 2 He ? 13 7 N + _____

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Choose the type of radiation from Column 2 that best matches each item in Column 1. -1 0 n

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Indicate whether each of the following is characteristic of the fission or fusion process. -A large nucleus is split into smaller nuclei.

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The nuclear reaction 126 50 Sn ? 126 51 Sb + ? is an example of

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Choose the type of radiation from Column 2 that best matches each item in Column 1. -Two small nuclei combine to form a larger nucleus.

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When a positron is emitted from the nucleus of an atom, the nuclear mass

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If the half-life of hydrogen-3 is 11.8 years, after two half-lives the radioactivity of a sample will be reduced to one-half of the original amount.

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What is the radioactive particle released in the following nuclear equation? 159 74 W ? 155 72 Hf + ?

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The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min?

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99 m99 \mathrm {~m}99 m 43 Tc → 99 43 Tc + __________

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Which is NOT a way to minimize your exposure to radiation?

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Nuclear fusion does not occur naturally.

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A beta particle is emmited when Co-60 decays to Fe-60.

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Gamma rays require the heaviest shielding of all the common types of nuclear radiation because gamma rays have the

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Indicate whether each of the following is characteristic of the fission or fusion process. -This nuclear process provides the energy of the Sun.

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A sample of technetium-99m has an activity of 1.5 Ci. How many disintegrations occur in the technetium-99m sample in 5.0 sec?

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$99 \mathrm {~m}$ 43 Tc → 99 43 Tc + __________

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