Abeka Chemistry-Quiz 25

The half life of magnesium-28 is 21 hours. If you start with 1000 mg of magnesium-28, how much would you have in 63 hours?

125.0 mg

Consists of high energy electromagnetic waves

Gamma radiation

Energy required to break up a nucleus into its individual nucleons

Nuclear binding energy

What properties are conserved in nuclear reactions?

Nuclear charge and mass number

The conversion of one nuclide into another in a spontaneous nuclear reaction

Radioactive decay

Substances with long half-lives tend to produce less dangerous radiation than substances with short half-lives

Radionuclides

Force that binds protons and neurons together in a nucleus

Strong nuclear force

Decreases atomic number of parent atom by 2

Alpha radiation

Consists of high velocity electrons

Beta radiation

Increases atomic number of parent atom by 1

Beta radiation