Question 1

When a nucleus undergoes radioactive decay, its new mass number is

Accepted Answer

A) always less than its original mass number. 
B) always more than its original mass number. 
C) never less than its original mass number. 
D) never more than its original mass number. 
A) always less than its original mass number. 
B) always more than its original mass number. 
C) never less than its original mass number. 
D) never more than its original mass number. D

Question 2

Nuclear fission can occur in

Accepted Answer

A) deuterium. 
B) hadrons. 
C) plutonium. 
D) quarks. 
A) deuterium. 
B) hadrons. 
C) plutonium. 
D) quarks. C

Question 3

The radiation dosage due to cosmic rays is greatest

Accepted Answer

A) in orbiting spacecraft. 
B) in airplanes at high altitudes. 
C) at sea level. 
D) underground. 
A) in orbiting spacecraft. 
B) in airplanes at high altitudes. 
C) at sea level. 
D) underground. A

Question 4

The atomic number of the nucleus   is

Accepted Answer

A) 7. 
B) 8. 
C) 15. 
D) 56. 
A) 7. 
B) 8. 
C) 15. 
D) 56.

Question 5

Plutonium

Accepted Answer

A) is an isotope of uranium. 
B) is the result of the alpha decay of uranium. 
C) is produced by the fission of uranium. 
D) has a larger atomic number than uranium. 
A) is an isotope of uranium. 
B) is the result of the alpha decay of uranium. 
C) is produced by the fission of uranium. 
D) has a larger atomic number than uranium.

Question 6

The atoms of the isotopes of an element are different in which one or more of the following?

Accepted Answer

A) number of electrons 
B) number of protons 
C) number of neutrons 
D) atomic mass 
E) Both C and D 
A) number of electrons 
B) number of protons 
C) number of neutrons 
D) atomic mass 
E) Both C and D

Question 7

The mass number of the nucleus   is

Accepted Answer

A) 7. 
B) 8. 
C) 15. 
D) 56. 
A) 7. 
B) 8. 
C) 15. 
D) 56.

Question 8

Protons and neutrons are held together to form nuclei by the

Accepted Answer

A) gravitational interaction. 
B) strong interaction. 
C) weak interaction. 
D) electromagnetic interaction. 
A) gravitational interaction. 
B) strong interaction. 
C) weak interaction. 
D) electromagnetic interaction.

Question 9

A nucleus increases in atomic number when it emits

Accepted Answer

A) a proton. 
B) a neutron. 
C) an electron. 
D) a positron. 
A) a proton. 
B) a neutron. 
C) an electron. 
D) a positron.

Question 10

The product of the alpha decay of the polonium isotope   is

Accepted Answer

A)    . 
B)    . 
C)    . 
D)    . 
A)    . 
B)    . 
C)    . 
D)    .

Question 11

The process of pair production cannot produce

Accepted Answer

A) a proton and an antiproton. 
B) a neutron and an antineutron. 
C) a neutron and a neutrino. 
D) an electron and a positron. 
A) a proton and an antiproton. 
B) a neutron and an antineutron. 
C) a neutron and a neutrino. 
D) an electron and a positron.

Question 12

Which, if any, of the following elements have no radioactive isotopes?

Accepted Answer

A) hydrogen 
B) potassium 
C) uranium 
D) All of these elements have radioactive isotopes. 
A) hydrogen 
B) potassium 
C) uranium 
D) All of these elements have radioactive isotopes.

Question 13

Of the following particles, the one with the least mass is the

Accepted Answer

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

Question 14

The most important single source of radiation dosage received by an average person in the United States is

Accepted Answer

A) medical x-rays. 
B) nuclear reactors. 
C) radon. 
D) radium. 
A) medical x-rays. 
B) nuclear reactors. 
C) radon. 
D) radium.

Question 15

The nuclide that decays by electron capture to become   is

Accepted Answer

A)    . 
B)    . 
C)    . 
D)    . 
A)    . 
B)    . 
C)    . 
D)    .

Question 16

The number of neutrons in the nucleus   is

Accepted Answer

A) 7. 
B) 8. 
C) 15. 
D) 56. 
A) 7. 
B) 8. 
C) 15. 
D) 56.

Question 17

The unit in which atomic masses are usually expressed is the

Accepted Answer

A) gram. 
B) eV. 
C) u. 
D) quark. 
A) gram. 
B) eV. 
C) u. 
D) quark.

Question 18

Which of the following is not an isotope of hydrogen?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 19

A reactor does not produce

Accepted Answer

A) energy. 
B) neutrons. 
C) uranium. 
D) plutonium. 
A) energy. 
B) neutrons. 
C) uranium. 
D) plutonium.

Question 20

A proton is annihilated when it interacts with which one or more of the following particles?

Accepted Answer

A) an electron 
B) a neutron 
C) an antineutron 
D) an antiproton 
A) an electron 
B) a neutron 
C) an antineutron 
D) an antiproton

When a nucleus undergoes radioactive decay, its new mass number is

Nuclear fission can occur in

The radiation dosage due to cosmic rays is greatest

The atomic number of the nucleus is

Plutonium

The atoms of the isotopes of an element are different in which one or more of the following?

The mass number of the nucleus is

Protons and neutrons are held together to form nuclei by the

A nucleus increases in atomic number when it emits

The product of the alpha decay of the polonium isotope is

The process of pair production cannot produce

Which, if any, of the following elements have no radioactive isotopes?

Of the following particles, the one with the least mass is the

The most important single source of radiation dosage received by an average person in the United States is

The nuclide that decays by electron capture to become is

The number of neutrons in the nucleus is

The unit in which atomic masses are usually expressed is the

Which of the following is not an isotope of hydrogen?

A reactor does not produce

A proton is annihilated when it interacts with which one or more of the following particles?

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

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Exam 8: The Nucleus

When a nucleus undergoes radioactive decay, its new mass number is

Nuclear fission can occur in

The radiation dosage due to cosmic rays is greatest

The atomic number of the nucleus is

Plutonium

The atoms of the isotopes of an element are different in which one or more of the following?

The mass number of the nucleus is

Protons and neutrons are held together to form nuclei by the

A nucleus increases in atomic number when it emits

The product of the alpha decay of the polonium isotope is

The process of pair production cannot produce

Which, if any, of the following elements have no radioactive isotopes?

Of the following particles, the one with the least mass is the

The most important single source of radiation dosage received by an average person in the United States is

The nuclide that decays by electron capture to become is

The number of neutrons in the nucleus is

The unit in which atomic masses are usually expressed is the

Which of the following is not an isotope of hydrogen?

A reactor does not produce

A proton is annihilated when it interacts with which one or more of the following particles?

The Scientific Method

Motion

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

Universe

Filters