Radioactive Decay

Front

What is radioactive decay?

Back

Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation, resulting in the transformation of the element into a different element or isotope.

Front

What particle is emitted when Uranium-238 decays into Thorium-234?

Back

An alpha particle.

Front

Which type of radiation has the highest penetrating power?

Back

Gamma radiation.

Front

What is an alpha particle?

Back

An alpha particle is a helium nucleus consisting of two protons and two neutrons.

Front

What force holds the nucleus of an atom together?

Back

The Strong Nuclear Force.

Front

What is the process of nuclear change in an atom of radioactive material called?

Back

Nuclear decay.

Front

What type of radiation can penetrate several centimeters of lead?

Back

Gamma radiation.

Front

What is the difference between alpha, beta, and gamma radiation?

Back

Alpha radiation consists of helium nuclei, beta radiation consists of electrons or positrons, and gamma radiation consists of high-energy photons.

Front

What is a beta particle?

Back

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

Front

What is the role of the Strong Nuclear Force?

Back

The Strong Nuclear Force is responsible for holding protons and neutrons together in the nucleus of an atom.