Nuclear Unit Review

Front

What is nuclear fission?

Back

Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei, along with the release of energy.

Front

What is nuclear fusion?

Back

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

Front

Define half-life in the context of radioactive decay.

Back

Half-life is the time required for half of the nuclei in a sample of a radioactive isotope to decay.

Front

What is a beta particle?

Back

A beta particle is a high-energy, high-speed electron or positron emitted during the radioactive decay of an atomic nucleus.

Front

What is spontaneous transmutation?

Back

Spontaneous transmutation is a type of radioactive decay in which an unstable nucleus changes into a different element without external influence.

Front

How do you calculate the remaining amount of a radioactive substance after multiple half-lives?

Back

To calculate the remaining amount, divide the initial amount by 2 raised to the number of half-lives that have passed.

Front

What is the significance of the nuclear equation?

Back

A nuclear equation represents the transformation of one element into another through nuclear reactions, showing the reactants and products involved.

Front

What is the role of neutrons in nuclear reactions?

Back

Neutrons play a crucial role in nuclear reactions by stabilizing the nucleus and facilitating fission reactions.

Front

What is the difference between a stable and unstable nucleus?

Back

A stable nucleus does not undergo radioactive decay, while an unstable nucleus will decay over time, emitting radiation.

Front

What is radioactive decay?

Back

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