Radioactivity Flashcards

Flashcards about radioactivity and types of radiation

Radioactive Decay

The process by which an unstable atomic nucleus loses energy by emitting radiation.

Alpha, Beta, and Gamma

The three basic forms of radiation, corresponding to the first three letters of the Greek alphabet.

Alpha Particle Charge

Has a positive two charge.

Beta Particle

Essentially an electron given off by the nucleus, with a negative one charge.

Gamma Rays

High energy radiation with no mass, emitted from the nucleus.

Positron

A particle involved in radioactivity, having a positive charge.

Neutron

A neutral particle involved in radioactivity, discovered by James Chadwick.

Alpha Particle Mass Decrease

When an alpha particle is emitted, the mass decreases by four.

Alpha Particle Atomic Number Decrease

When an alpha particle is emitted, the atomic number decreases by two.

Gamma Rays Emission

Almost anything that gives off radiation gives off gamma rays, which is extra energy when a reaction occurs.

PET Scan

Positron Emission Tomography, a diagnostic tool utilizing positron emissions.

Neutron Use

Often used to force an element to undergo radioactive decay.

Ionizing Radiation

Radiation that knocks off electrons when reacting with something in the body.