710.💎Unit 7 Flashcardizz

Front

What is nuclear decay?

Back

Nuclear decay is the process by which an unstable atomic nucleus loses energy by emitting radiation, resulting in the transformation of the nucleus into a different state.

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, making it identical to a helium nucleus. It is positively charged 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. It can be classified as beta minus (electron) or beta plus (positron).

Front

What is gamma radiation?

Back

Gamma radiation is a form of electromagnetic radiation emitted from a nucleus during radioactive decay, characterized by high energy and no mass.

Front

How does nuclear decay affect atomic number?

Back

In alpha decay, the atomic number decreases by 2. In beta decay, it increases by 1 (beta minus) or decreases by 1 (beta plus). Gamma decay does not change the atomic number.

Front

What is the role of protons in an atom?

Back

Protons are positively charged particles found in the atomic nucleus. They determine the atomic number and identity of an element.

Front

Where are neutrons located in an atom?

Back

Neutrons are neutral particles located in the atomic nucleus alongside protons.

Front

What is the significance of the atomic nucleus?

Back

The atomic nucleus contains protons and neutrons, and it is the central part of an atom that determines its mass and stability.

Front

What happens to the mass number during alpha decay?

Back

During alpha decay, the mass number decreases by 4 due to the loss of 2 protons and 2 neutrons.