Nuclear Chemistry Review

Front

What is nuclear fission?

Back

Nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts, releasing a significant amount of energy.

Front

What is nuclear fusion?

Back

Nuclear fusion is a nuclear reaction in which two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

Which produces more energy: nuclear fission or nuclear fusion?

Back

Nuclear fusion produces more energy than nuclear fission.

Front

What is an isotope?

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Front

What is the half-life of a radioactive substance?

Back

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

Front

What is the half-life of iodine-131?

Back

The half-life of iodine-131 is 8 days.

Front

What do isotopes of an element have in common?

Back

Isotopes of an element have the same number of protons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the significance of the decay constant in nuclear chemistry?

Back

The decay constant is a probability rate at which a particular radioactive isotope will decay.

Front

What is radioactive decay?

Back

Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation.