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## Some heavy elements have unstable atomic nuclei that occasionally change their chemical identity by releasing particles or energy.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

by CK-12 //at grade

Students will learn about radioactive decay and how to write nuclear equations.

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by CK-12 //at grade

This concept discusses the cause of radioactivity and the two basic types of radioactive decay.

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• Interactive Simulations

## Marie Curie's Classroom

by CK-12 //at grade

Study the basics of radioactive decay and the properties of atomic nuclei in Marie Curie's laboratory and classroom.

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• Interactive Simulations

by CK-12 //at grade

Learn about how radiocarbon dating works and how anthropologists can use this method to figure out who long ago people lived.

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• Simulation

## Alpha Decay

by CK-12 //at grade

A simulation of alpha decay for different nuclei.

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• Simulation

## Beta Decay

by CK-12 //at grade

A simulation of beta decay for a collection of or for individual nuclei.

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• Video

by CK-12 //at grade

Goes over radioactivity and explains alpha, beta, and gamma radiation.

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• Video

## The Higgs Boson (Part 1)

by CK-12 //at grade

Explanation of the Higgs boson particle.

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• Video

## The Higgs Boson (Part 2)

by CK-12 //at grade

Explanation of the Higgs boson particle.

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• Practice
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by CK-12 //at grade
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## Radiation Quiz - PPB

by CK-12 //at grade

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by CK-12 //at grade

Reviews radioactivity, its causes, and its effect on the atom.

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• Critical Thinking

## Radiation Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Radiation.

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by CK-12 //at grade

This is an activity for students to complete while reading the Radioactivity Concept

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• Real World Application

## Atomic Bomb

by CK-12 //at grade

Explore the physics of an atomic bomb.

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• Real World Application

## Nuclear Medicine

by CK-12 //at grade

What is nuclear medicine?

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• Study Guide

## Nuclear Physics Study Guide

by CK-12 //at grade

This study guide gives a brief overview of radiation.

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