Question 1

The strongest of the fundamental interactions is 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. B

Question 2

A nucleus with too few neutrons for stability may decay radioactively with the emission of

Accepted Answer

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

Question 3

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. D

Question 4

The half-life of tritium is 12.5 years.If we start out with 1 g of tritium, after 25 years there will be

Accepted Answer

A) no tritium left. 
B) 1/4 g of tritium left. 
C) 1/2 g of tritium left. 
D) a total of 4 g of tritium. 
A) no tritium left. 
B) 1/4 g of tritium left. 
C) 1/2 g of tritium left. 
D) a total of 4 g of tritium.

Question 5

The nucleus of an atom cannot be said to

Accepted Answer

A) contain most of the atom's mass. 
B) be small in size. 
C) be electrically neutral. 
D) deflect alpha particles that come near it. 
A) contain most of the atom's mass. 
B) be small in size. 
C) be electrically neutral. 
D) deflect alpha particles that come near it.

Question 6

The number of protons in the nucleus   is

Accepted Answer

A) 4. 
B) 5. 
C) 9. 
D) 13. 
A) 4. 
B) 5. 
C) 9. 
D) 13.

Question 7

A breeder reactor is designed to produce more nuclear fuel than it consumes.The new fuel is in the form of

Accepted Answer

A)    . 
B)    . 
C) plutonium. 
D) tritium. 
A)    . 
B)    . 
C) plutonium. 
D) tritium.

Question 8

By far the most dangerous diagnostic x-rays in medicine are

Accepted Answer

A) dental x-rays. 
B) chest x-rays. 
C) CT scans. 
D) mammograms. 
A) dental x-rays. 
B) chest x-rays. 
C) CT scans. 
D) mammograms.

Question 9

The atomic number of the nucleus   is

Accepted Answer

A) 4. 
B) 5. 
C) 9. 
D) 13. 
A) 4. 
B) 5. 
C) 9. 
D) 13.

Question 10

Of the following particles, the only one that is not stable outside an atom is the

Accepted Answer

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

Question 11

Which of the following is not a unit of energy?

Accepted Answer

A) Joule. 
B) Kilowatt-hour. 
C) Ampere-hour. 
D) Electron volt. 
A) Joule. 
B) Kilowatt-hour. 
C) Ampere-hour. 
D) Electron volt.

Question 12

When a nucleus of the copper isotope   captures an electron, it becomes

Accepted Answer

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

Question 13

The nuclide that decays by electron capture to become   is

Accepted Answer

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

Question 14

The mass of a positron is

Accepted Answer

A) equal to the mass of an electron. 
B) more than the mass of an electron but less than the mass of a proton. 
C) equal to the mass of a proton. 
D) more than the mass of a proton. 
A) equal to the mass of an electron. 
B) more than the mass of an electron but less than the mass of a proton. 
C) equal to the mass of a proton. 
D) more than the mass of a proton.

Question 15

The helium isotope   undergoes beta decay with the emission of an electron.The product of the decay is

Accepted Answer

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

Question 16

If radium and chlorine combine to form radium chloride, the compound is

Accepted Answer

A) no longer radioactive. 
B) half as radioactive as its radium content. 
C) as radioactive as its radium content. 
D) twice as radioactive as its radium content. 
A) no longer radioactive. 
B) half as radioactive as its radium content. 
C) as radioactive as its radium content. 
D) twice as radioactive as its radium content.

Question 17

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

Accepted Answer

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

Question 18

A molecule of heavy water contains

Accepted Answer

A) two oxygen atoms instead of one. 
B) three hydrogen atoms instead of two. 
C) deuterium atoms instead of hydrogen atoms. 
D) a deuterium atom instead of an oxygen atom. 
A) two oxygen atoms instead of one. 
B) three hydrogen atoms instead of two. 
C) deuterium atoms instead of hydrogen atoms. 
D) a deuterium atom instead of an oxygen atom.

Question 19

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 20

The mass number of the nucleus   is

Accepted Answer

A) 4. 
B) 5. 
C) 9. 
D) 13. 
A) 4. 
B) 5. 
C) 9. 
D) 13.

The strongest of the fundamental interactions is the

A nucleus with too few neutrons for stability may decay radioactively with the emission of

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

The half-life of tritium is 12.5 years.If we start out with 1 g of tritium, after 25 years there will be

The nucleus of an atom cannot be said to

The number of protons in the nucleus is

A breeder reactor is designed to produce more nuclear fuel than it consumes.The new fuel is in the form of

By far the most dangerous diagnostic x-rays in medicine are

The atomic number of the nucleus is

Of the following particles, the only one that is not stable outside an atom is the

Which of the following is not a unit of energy?

When a nucleus of the copper isotope captures an electron, it becomes

The nuclide that decays by electron capture to become is

The mass of a positron is

The helium isotope undergoes beta decay with the emission of an electron.The product of the decay is

If radium and chlorine combine to form radium chloride, the compound is

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

A molecule of heavy water contains

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

The mass number of the nucleus is

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Exam 8: The Nucleus

The strongest of the fundamental interactions is the

A nucleus with too few neutrons for stability may decay radioactively with the emission of

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

The half-life of tritium is 12.5 years.If we start out with 1 g of tritium, after 25 years there will be

The nucleus of an atom cannot be said to

The number of protons in the nucleus is

A breeder reactor is designed to produce more nuclear fuel than it consumes.The new fuel is in the form of

By far the most dangerous diagnostic x-rays in medicine are

The atomic number of the nucleus is

Of the following particles, the only one that is not stable outside an atom is the

Which of the following is not a unit of energy?

When a nucleus of the copper isotope captures an electron, it becomes

The nuclide that decays by electron capture to become is

The mass of a positron is

The helium isotope undergoes beta decay with the emission of an electron.The product of the decay is

If radium and chlorine combine to form radium chloride, the compound is

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

A molecule of heavy water contains

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

The mass number of the nucleus is

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

The Universe

Filters