Texas Education Agency
Texas Gateway: Ap Physics I: Appendices: Selected Radioactive Isotopes
This is a chart showing Selected Radioactive Isotopes including: Decay Mode(s), Energy(MeV), y-Ray Energy(MeV), and more.
Science Struck
Science Struck: Radioactive Isotopes in Medicine
Learn what radioactive isotopes are and the different ways that they are used in medicine.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age
[Free Registration/Login may be required to access all resource tools.] An overview of radioactive decay.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age
[Free Registration/Login may be required to access all resource tools.] An overview of radioactive decay.
Science Struck
Science Struck: Isotopes of Carbon
Describes the characteristics of carbon and what an isotope is. Presents a chart of carbon isotopes listing nuclide symbol, atomic weight, half-life, and nuclear spin, as well as a second chart listing radioactive carbon isotopes....
Chem4kids
Chem4 Kids: Isotopes
This overview of isotopes explores where isotopes come from and returning an atom to its normal state.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Nuclear Fission
Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor.
Science Struck
Science Struck: List of Radioactive Elements
Learn about radioactivity, the different types of radioactive decay, isotopes, and half-life of a radioactive element. Includes a long chart listing radioactive elements, atomic number and mass number, decay type, and length of half-life.
CK-12 Foundation
Ck 12: Physical Science: Isotopes
[Free Registration/Login may be required to access all resource tools.] Definition of isotopes, how they are named and their stability.
Physics Aviary
Physics Aviary: Practice Problems: Activity of an Isotope
Determine the activity of a radioactive sample by measuring the counts per minute that are detected by a sensor.
BBC
Bbc: Gcse Bitesize: Radioactive Emissions
This lesson focuses on radioactive emissions including radioactive decay, half-life, using half-life, how to calculate net decline, a table showing how the count rate of an isotope might change over time, and a link to a test.
Science Education Resource Center at Carleton College
Serc: Radioactive Dating: Looking at Half Lives Using M&ms
In this activity, students gain a better understanding of radioactive dating and half-lives by using M&Ms to demonstrate the idea of radioactive decay. They will be able to see how scientists can determine the age of rocks by looking...
Idaho State University
Radioactivity in Nature
Interesting information including: average annual dosage, radioactivity in space, in the human body, and in the oceans.
CK-12 Foundation
Ck 12: The Nucleus and Isotopes
[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn about the particles in an atomic nucleus, isotopes, and nuclear forces.
Other
American Institute of Physics: Marie Curie and Radioactivity
A very readable account of the discovery of radioactivity and its properties.
PBS
Pbs Teachers:nordic Sagas: Radioactive Reindeer
Demonstrate how soil absorbs radioactivity by simulating the absorption of the radioactive isotope from the Chernobyl disaster into the lichen of Scandinavia. Use a chart to figure out the half-life of the isotope.
Science Education Resource Center at Carleton College
Serc: Radioactive Decay Calculator
Students will use this online Radioactive Decay Calculator to compute radioactive decay, timed decay, and timed solid disposal for a databank containing 116 isotopes. This calculator also features University of British Columbia disposal...
Lawrence Berkeley National Laboratory
Berkeley Lab: Neutron Activation Analysis
A simple explanation of neutron activation of some natural elements in order to create a radioactive nucleus.
Lawrence Berkeley National Laboratory
Berkeley Lab: Radioactive Dating
This site provides an overview of radioactive dating, a process used to determine the age of rocks and other materials.
Khan Academy
Khan Academy: Understanding the Properties of Radioactive Tracers
Read the passage and study the graphic to complete the five-question quiz about the properties of radioactive tracers.
Ducksters
Ducksters: Chemistry for Kids: Isotopes
Study the science of isotopes in chemistry including naming isotopes, hydrogen, examples, fun facts, unstable, and stable on this site.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age Study Guide
[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how radioactive particles decay. Includes a few questions to check for understanding.
Utah Education Network
Uen: Isotopic Dating Activity
Students will do research relating half-life and the age of radioactive substances on interesting topics.
Lawrence Berkeley National Laboratory
Berkeley Lab: Radioactivity in Nature
This entry provides a summary of radioactivity in nature and the decay chain.