Nuclear Chemistry

Most of the volume of an atom is occupied by the

Which of the following is the correct relationship between mass and energy?

Which of the following is a product of α decay of Uranium-238?

How many neutrons are in an alpha particle?

The carbon-12 atom is assigned a relative mass of exactly

Electron capture transforms potassium-40 (element 19) into what nuclide?

The expression of 5008 km in scientific notation is ____.

An atom is electrically neutral because

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is

At present, fusion reactions

The charge on a gamma ray is ____.

What happens in a chain reaction?

If 1 inch equals 2.54 cm, how many centimeters equal 1 yard?

Neon-22 contains 12 neutrons. It also contains

What is the change in atomic number caused by the emission of a alpha particle?

The atomic mass of an element listed in the periodic table is the

How many half-lives are required for 3/4 of the nuclei of one isotope in a sample to decay?

Isotopes are atoms of the same element that have different

In nuclear reactors, the role of control rods is to

The least penetrating form of radiation is ____.

Control rods

Protons within a nucleus are attracted to each other by

Positron

When radium-226 (atomic number 88) decays by emitting an alpha particle, it becomes ____.

A transmutation reaction must always involve a(n) ____.

Lead-214 undergoes β decay and the product of this decay undergoes β decay, what is produced?

What is the measurement 111.009 mm rounded off to four significant digits?

A particle that has about the same mass as a proton, but with no electrical charge, is a(n)

A neutron breaks down to form _____.

What is the approximate ratio of neutrons to protons for stable atoms below atomic number 20?

conversion of an atom of one element to an atom of another element

What particle is needed to complete the following nuclear equation?

Transuranium Element

What is the change in atomic number caused by the emission of a beta particle?

As the mass number of an isotope of an element increases, the # of electrons in a neutral atom

What particle is needed to complete the following equation?

Electron capture turns ⁷₄Be into what nuclide?

What particle does nickel-57 emit when it decays to cobalt-57? (Evaluate atomic numbers)

Alpha  Particle

Which concept in Dalton's atomic theory has been modified?

Mass defect is the difference between the mass of

The most penetrating form of radiation is ____.

Beta Particle

Which of the following nuclides is most likely to be unstable?

According to the Uranium-238 decay series, what radiation changes Uranium-238 to Thorium-234?

What is the change in atomic number caused by the emission of gamma radiation?

To what element does polonium-208 (atomic number 84) decay when it emits an alpha particle?

A certain nucleus has a half-life of 32 minutes. How long does it take for 52% to decompose?

What particle is emitted in alpha radiation?

In the measurement 0.503 L, which digit is the estimated digit?

Most of the mass of an atom is provided by the

A reaction that results in the combining of smaller atomic nuclei is ____

What symbol is used for beta radiation?

Which symbol is used for an alpha particle?