Radioactivity; Typer of Particles and Nuclear Equations

Front

What is radioactivity?

Back

Radioactivity is the process by which unstable atomic nuclei lose energy by emitting radiation.

Front

What are the three main types of nuclear radiation?

Back

The three main types of nuclear radiation are alpha particles, beta particles, and gamma rays.

Front

What is an alpha particle?

Back

An alpha particle consists of 2 protons and 2 neutrons, and is emitted during alpha decay.

Front

What is a beta particle?

Back

A beta particle is a high-energy, high-speed electron or positron emitted during beta decay.

Front

What is gamma radiation?

Back

Gamma radiation is a form of electromagnetic radiation emitted from the nucleus of an atom.

Front

What is nuclear fission?

Back

Nuclear fission is the process of splitting a heavy atomic nucleus into two lighter nuclei, releasing energy.

Front

What is nuclear fusion?

Back

Nuclear fusion is the process of combining two light atomic nuclei to form a heavier nucleus, releasing energy.

Front

What is a half-life?

Back

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

Front

What type of nuclear reaction powers the sun?

Back

The sun is powered by nuclear fusion.

Front

What is the significance of large atomic numbers in fission?

Back

Only nuclei with large atomic numbers can undergo fission due to their instability.