go over tests notes on nuclear nuclear video hw: final review due monday

Go over Tests Notes on Nuclear Nuclear Video HW: Final Review

due Monday

What is a nuclear reaction?

Agenda AQOD

NUCLEAR CHEMISTRY

What particles are involved in a Chemical Reaction?

Valence Electrons

What particles are involved in a nuclear reaction?

Particles from the nucleus

aka – nuclear radiation

How is a Nuclear Reaction different from a Chemical Reaction?Chemical reactions involve transferring or sharing electrons.

How is a Nuclear Reaction different from a Chemical Reaction?Nuclear reactions involve changes in the nucleus of an atom.

What is Nuclear Radiation?

Particles & energy emitted from the nucleus of a radioactive element.

What is an isotope?

A form of an element with a different number of neutrons

Many elements have radioactive isotopes

3 Types of Radiation

1. Alpha radiation Consists of (alpha particles)

that have been emitted from a radioactive source.

Each alpha particle has 2 protons and 2 neutrons

Alpha particle emission

3 Types of Radiation

1. Alpha radiation (cont.) Easily stopped by paper or your

skin

3 Types of Radiation

2. Beta radiation Consists of fast moving

electrons (beta particles)

Beta particle emission

3 Types of Radiation

2. Beta radiation (cont.) Stopped by aluminum foil

or thin pieces of wood.

3 Types of Radiation

3. Gamma Radiation Consists of high energy

electromagnetic radiation with no mass or charge

3 Types of Radiation

3. Gamma Radiation (cont.) Both easily pass through paper,

wood, and the human body. Can be stopped by several

meters of concrete or several centimeters of lead.

Summary of Nuclear Radiation

Penetrating Power