Radioactivity

Front

What is the order of radiation types from most to least penetrating?

Back

Gamma, Beta, Alpha

Front

How many neutrons are in an element with a mass number of 11 and an atomic number of 5?

Back

6

Front

A radioactive nuclide has a ____ stable nucleus than a non-radioactive nucleus of the same element.

Back

less

Front

What particle determines the identity of an element?

Back

Proton

Front

Which particles make up the nucleus of an atom?

Back

Protons and Neutrons

Front

What is radioactivity?

Back

The process by which unstable atomic nuclei lose energy by emitting radiation.

Front

What are the three main types of radiation?

Back

Alpha particles, Beta particles, and Gamma rays.

Front

What is an alpha particle composed of?

Back

2 protons and 2 neutrons (essentially a helium nucleus).

Front

What is the charge of a beta particle?

Back

Negative (beta minus) or positive (beta plus, or positron).

Front

What is the significance of half-life in radioactivity?

Back

It is the time required for half of the radioactive atoms in a sample to decay.