Chemistry Chapter 25 Review
Alpha, beta, and gamma
What are the three types of radiation?
Alpha particle
What nuclear emission has the greatest mass and the least penetrating power?
Gamma radiation
What nuclear emission has the greatest penetrating power?
Gamma
What type of radiation has neither mass nor charge?
Beta particle
Which particle has the least mass?
Remains the same
As a radioactive element emits gamma radiation, the atomic number of the element
Remains the same
As a sample of a radioactive isotope decays, its half life
(1/2)^total time/half life
Formula that allows us to determine how much of a substance is left after a certain length of time
Radioisotope
Isotope that is radioactive because it has an unstable nucleus (too many neutrons)
Balanced
Nuclear equations must be
Different charges and the same mass
Positrons and beta particles have
Transmutation
Process in which unstable isotopes of an element will change into stable isotopes of another
Beta
Radiation in which a fast moving electron is formed by the breaking down of a nucleus in an atom
Alpha
Radiation in which a helium nucleus has been given off from a radioactive source
Gamma
Radiation that is electromagnetic, has no mass and no charge
Fusion reaction
Reaction during which two nuclei combine to produce a nucleus of a heavier mass
Fission reaction
Reaction in which the nuclei of certain isotopes are bombarded with neutrons, splitting each into smaller fragments
