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

Alpha particles, beta particles, and gamma rays.

Front

What is an alpha particle?

Back

An alpha particle consists of 2 protons and 2 neutrons, equivalent to a helium nucleus.

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 gamma radiation?

Back

Gamma radiation is electromagnetic radiation of high frequency and energy, emitted from a nucleus.

Front

What is a nuclear equation?

Back

A nuclear equation shows the decay of a radioactive isotope, including the particles emitted.

Front

How do you balance a nuclear equation?

Back

Ensure that the total number of protons and neutrons is the same on both sides of the equation.

Front

What is the significance of atomic number in radioactivity?

Back

The atomic number determines the element and its position in the periodic table; elements with atomic numbers above 83 are typically radioactive.

Front

What is the decay product of U-238?

Back

The decay product of U-238 is an alpha particle and 234-Th.

Front

What is the role of neutrons in a nucleus?

Back

Neutrons help stabilize the nucleus; an imbalance can lead to radioactivity.