Alpha and Beta Decay

Front

What is the atomic number of Actinium (Ac)?

Back

89

Front

What is the process called when a nucleus splits into smaller nuclei?

Back

Fission

Front

Which type of nuclear radiation is emitted during alpha decay?

Back

Alpha radiation

Front

What particle is emitted during beta decay?

Back

Beta particle

Front

If the half-life of a radioactive substance is 4 days, how much of a 200-g sample is left after 16 days?

Back

12.5g

Front

Define alpha decay.

Back

A type of radioactive decay where an atomic nucleus emits an alpha particle (2 protons and 2 neutrons).

Front

Define beta decay.

Back

A type of radioactive decay where a beta particle (electron or positron) is emitted from an atomic nucleus.

Front

What is a half-life?

Back

The time required for half of the radioactive atoms in a sample to decay.

Front

What is the difference between fission and fusion?

Back

Fission is the splitting of a nucleus, while fusion is the combining of two nuclei.

Front

What is gamma radiation?

Back

High-energy electromagnetic radiation emitted from a nucleus during radioactive decay.