Nuclear Chemistry

What is the primary result of a fission reaction? A)conversion of mass to energy B)conversion to energy mass C)binding together of two heavy nuclei D)binding together of two light nuclei?

A

An unstable nucleus spontaneously releases a positron.This is an example of A)radioactive decay B)nuclear fusion C)Chemical Deposition D)Thermal Conductivity

a

As an atom of a radioactive isotope emits an alpha particle,the mass number of the atom A)decreases B)increases C)remains the same

a

The fusion of hydrogen nuclei with the release of energy can be initiated by a fission reaction because the fission reaction provides a A)high temperature and high pressure B)high temperature and low pressure C)good supply of hydrogen nuclei D)good supply of neutrons

a

Which nuclear emission has the greatest mass? A)alpha particle B)beta particle C)gamma ray D)positron

a

Which of these particles has the greatest mass? A)alpha B)beta C)neutron D)positron

a

A carbon -14 atom spontaneously decayed to form a nitrogen-14 atom.This change took place because A)a transmutation occurred without particle emission B)a transmutation occurred with particle emission C)Nitrogen-14 has an unstable nucleus D)Carbon-14 has a stable nucleus

b

Which particle has the least mass? a)alpha particle B)beta particle C)neutron D)proton

b

Positrons and beta particles have A)the same charge and the same mass B)the same charge and different masses C)different charges and the same mass

c

When a beta particle (0 -1e) is emitted by the nucleus of an atom ,the mass number of the atom A)decreases B)increases C) remains the same

c

A change in the nucleus of an atom that converts the atom from one element to another element is called A)combustion b)neutralization c)polymerization D)transmutation

d

Which type of reaction occurs when a high-energy particle collides with the nucleus of an atom,converting that atom to an atom of a different element? A)addition B)neutralization C)substitution d)transmutation

d

an alpha particle has the same composition as a A)hydrogen nucleus B)deuterium nucleus C)beryllium nucleus D)helium nucleus

d