Nuclear Chemistry Post Test

Front

What is gamma emission?

Back

Gamma emission is a type of radioactive decay where an unstable nucleus releases gamma radiation, which is high-energy electromagnetic radiation, without changing the number of protons or neutrons in the nucleus.

Front

What happens to unstable nuclei with too many or too few neutrons?

Back

Unstable nuclei with too many or too few neutrons will decay by emitting radiation to reach a more stable state.

Front

What type of nuclear reaction occurs in the sun and stars?

Back

Fusion is the type of nuclear reaction that occurs in the sun and stars, where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What is fission?

Back

Fission is a nuclear reaction in which a heavy nucleus splits into two or more smaller nuclei, along with the release of energy and neutrons.

Front

What type of nuclei does fission produce?

Back

Fission produces smaller nuclei compared to the original heavy nucleus.

Front

What is alpha decay?

Back

Alpha decay is a type of radioactive decay in which an unstable nucleus emits an alpha particle, consisting of 2 protons and 2 neutrons, resulting in a new nucleus.

Front

What is beta decay?

Back

Beta decay is a type of radioactive decay in which a neutron in an unstable nucleus is transformed into a proton and an electron, with the electron being emitted as a beta particle.

Front

What is the difference between fission and fusion?

Back

Fission is the splitting of a heavy nucleus into smaller nuclei, while fusion is the combining of light nuclei to form a heavier nucleus.

Front

What is a radioactive isotope?

Back

A radioactive isotope is an isotope of an element that is unstable and can decay, emitting radiation in the process.

Front

What is half-life?

Back

Half-life is the time required for half of the radioactive atoms in a sample to decay into a more stable form.