[Free Registration/Login may be required to access all resource tools.] Describes the modern concept of the atomic nucleus.

Take this interactive, multiple-choice quiz over subatomic particles, then review your score and any missed questions at the end.

Explains the processes of radioactive decay in primary and secondary modes.

This site from Jefferson Lab provides a description of beta decay along with two helpful formula examples. Several links are provided throughout this page for additional information on related subjects.

Site presents a straightforward presentation of Rutherford's work concerning the Law of Energy Conservation. Provides an adequate summary of early science on the nucleus, and includes much needed illustrations.

This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 3 of 7 in the series titled "Subatomic Particles."

This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 4 of 7 in the series titled "Subatomic Particles."

This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 6 of 7 in the series titled "Subatomic Particles."

This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 7 of 7 in the series titled "Subatomic Particles."

[Free Registration/Login Required] This flipchart defines the parts of the atom. It uses Activotes for assessment.

Site provides the ABC's of nuclear science including radioactivity and gamma decay to fission and comic rays.