Question 1

Which of the following best describes the sequence with which nuclear power plants generate energy?

Accepted Answer

A) nuclear energy → mechanical energy → electrical energy → heat energy 
B) nuclear energy → heat energy → mechanical energy → electrical energy 
C) electrical energy → mechanical energy → heat energy → nuclear energy 
D) mechanical energy → nuclear energy → heat energy → electrical energy 
E) heat energy → mechanical energy → electrical energy → nuclear energy 
A) nuclear energy → mechanical energy → electrical energy → heat energy 
B) nuclear energy → heat energy → mechanical energy → electrical energy 
C) electrical energy → mechanical energy → heat energy → nuclear energy 
D) mechanical energy → nuclear energy → heat energy → electrical energy 
E) heat energy → mechanical energy → electrical energy → nuclear energy B

Question 2

Which radioactive isotope is involved in radiocarbon dating?

Accepted Answer

A) C-6 
B) C-12 
C) C-13 
D) C-14 
E) C-6 and C-12. 
A) C-6 
B) C-12 
C) C-13 
D) C-14 
E) C-6 and C-12. D

Question 3

When the isotope   undergoes alpha decay, what isotope is formed?

Accepted Answer

The answer of When the isotope   undergoes alpha...

Question 4

Which type of radiation has the greatest penetrating power?

Accepted Answer

A) alpha particle 
B) beta particle 
C) positron 
D) gamma ray 
E) All radiation types are equally penetrating. 
A) alpha particle 
B) beta particle 
C) positron 
D) gamma ray 
E) All radiation types are equally penetrating.

Question 5

Compared to the energy of chemical bonds, nuclear binding energy is very weak.

Accepted Answer

A) True 
 B)False

Question 6

How many protons are contained in one alpha particle?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 4 
E) 6 
A) 0 
B) 1 
C) 2 
D) 4 
E) 6

Question 7

Nuclei with 84 or more protons are unstable and radioactive.

Accepted Answer

A) True 
 B)False

Question 8

When a molecule is hit by gamma radiation, it may become ionized.

Accepted Answer

A) True 
 B)False

Question 9

Positrons are produced when a proton is converted to a neutron in the nucleus of a radioactive isotope.

Accepted Answer

A) True 
 B)False

Question 10

Doubling the distance from a source of radioactivity will halve the radiation intensity.

Accepted Answer

A) True 
 B)False

Question 11

The half-life of cobalt-60 is 5.3 years.What percent of a sample of cobalt-60 will remain after 21.2 years?

Accepted Answer

A) 50% 
B) 40% 
C) 12.5% 
D) 10% 
E) 6.25% 
A) 50% 
B) 40% 
C) 12.5% 
D) 10% 
E) 6.25%

Question 12

What is the complete nuclear symbol for X in the equation for radioactive decay shown below?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of the choices are correct. 
A)    
B)    
C)    
D)    
E) None of the choices are correct.

Question 13

What type of radioactive decay is illustrated by the following nuclear equation?

Accepted Answer

A) positron emission 
B) alpha decay 
C) beta decay 
D) gamma production 
E) helium emission 
A) positron emission 
B) alpha decay 
C) beta decay 
D) gamma production 
E) helium emission

Question 14

What is the charge of an alpha particle?

Accepted Answer

A) 0 
B) -1 
C) 1 
D) 2 
E) 4 
A) 0 
B) -1 
C) 1 
D) 2 
E) 4

Question 15

What particle or nucleus X is needed to complete the following equation?

Accepted Answer

A) proton 
B) uranium-235 
C) alpha 
D) beta 
E) gamma 
A) proton 
B) uranium-235 
C) alpha 
D) beta 
E) gamma

Question 16

Beta particles are a form of electromagnetic energy.

Accepted Answer

A) True 
 B)False

Question 17

What term is used to describe radioactive substances that are used as probes to study internal organs?

Accepted Answer

A) isotopes 
B) tracers 
C) metastable nuclides 
D) Geiger counter 
E) roentgens 
A) isotopes 
B) tracers 
C) metastable nuclides 
D) Geiger counter 
E) roentgens

Question 18

What fraction of the initial amount of an isotope remains after five half-lives?

Accepted Answer

A) 0.200 
B) 0.969 
C) 0.0100 
D) 0.0313 
E) 1.00 × 10-10 
A) 0.200 
B) 0.969 
C) 0.0100 
D) 0.0313 
E) 1.00 × 10-10

Question 19

Which phrase best describes a metastable isotope?

Accepted Answer

A) an isotope that is only partially stable 
B) an isotope that decays by emitting only a gamma ray 
C) an isotope that decays only when prompted by neutron bombardment 
D) an isotope that is man-made 
E) any isotope of an element that is radioactive 
A) an isotope that is only partially stable 
B) an isotope that decays by emitting only a gamma ray 
C) an isotope that decays only when prompted by neutron bombardment 
D) an isotope that is man-made 
E) any isotope of an element that is radioactive

Question 20

Which of the following is not a method used for detecting radiation?

Accepted Answer

A) Geiger counter 
B) photographic imaging 
C) film badges 
D) computer imaging 
E) radiocarbon dating 
A) Geiger counter 
B) photographic imaging 
C) film badges 
D) computer imaging 
E) radiocarbon dating

Exam 9: The Nucleus, Radioactivity, and Nuclear Medicine

Which of the following best describes the sequence with which nuclear power plants generate energy?

Which radioactive isotope is involved in radiocarbon dating?

When the isotope undergoes alpha decay, what isotope is formed?

Which type of radiation has the greatest penetrating power?

Compared to the energy of chemical bonds, nuclear binding energy is very weak.

How many protons are contained in one alpha particle?

Nuclei with 84 or more protons are unstable and radioactive.

When a molecule is hit by gamma radiation, it may become ionized.

Positrons are produced when a proton is converted to a neutron in the nucleus of a radioactive isotope.

Doubling the distance from a source of radioactivity will halve the radiation intensity.

The half-life of cobalt-60 is 5.3 years.What percent of a sample of cobalt-60 will remain after 21.2 years?

What is the complete nuclear symbol for X in the equation for radioactive decay shown below?

What type of radioactive decay is illustrated by the following nuclear equation?

What is the charge of an alpha particle?

What particle or nucleus X is needed to complete the following equation?

Beta particles are a form of electromagnetic energy.

What term is used to describe radioactive substances that are used as probes to study internal organs?

What fraction of the initial amount of an isotope remains after five half-lives?

Which phrase best describes a metastable isotope?

Which of the following is not a method used for detecting radiation?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

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