About This Chapter
How It Works:
- Identify the lessons in the Holt Science Spectrum - Physical Science Nuclear Changes chapter with which you need help.
- Find the corresponding video lessons with this companion course chapter.
- Watch fun videos that cover the nuclear changes topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- Examples of radioactive materials
- Radioactive decay
- The definition of half-life
- Applications and uses of nuclear chemistry
- Critical mass and chain reactions
- Background radiation
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1. What Are Radioactive Materials? - Definition, Examples, Uses & Benefits
Radioactive materials are all around us. Some are beneficial, while others may cause us harm. In this lesson you'll learn what radioactive materials are and explore where they come from and how they can be useful to us.
2. Types of Radioactive Decay and Their Effect on the Nucleus
What is meant by the term 'radioactive'? In this lesson we will break down the three main types of nuclear decay particles and discuss their composition, their effect on the nucleus, and their applications.
3. Half-life: Calculating Radioactive Decay and Interpreting Decay Graphs
What causes a radioactive particle to decay? We'll never really know, but our best guess lies in probability. In this lesson, we are going to focus on the half-life, a way of measuring the probability that a particle will react.
4. Fusion, Fission, Carbon Dating, Tracers & Imaging: Applications of Nuclear Chemistry
What can the sun do that we can't? How do carbon atoms 'date'? Are radioactive isotopes helpful in the medical field? The answers to these questions can be found in this lesson on the applications of nuclear chemistry.
5. Critical Mass & Controlling Chain Reactions
Learn about critical mass in the context of nuclear reactors, as well as how we can manage nuclear chain reactions using control rods and water cooling. After the lesson, see how much you've learned by taking a quiz.
6. Background Radiation: Definition, Causes & Examples
This lesson will define background radiation, explain how it is measured, discuss some of the sources and examples of background radiation, and briefly consider the risk to humans. A short quiz will follow.
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Other chapters within the Holt Science Spectrum - Physical Science: Online Textbook Help course
- Holt Physical Science Chapter 1: Introduction to Science
- Holt Physical Science Chapter 2: Matter
- Holt Physical Science Chapter 3: States of Matter & Energy
- Holt Physical Science Chapter 4: Atoms & the Periodic Table
- Holt Physical Science Chapter 5: The Structure of Matter
- Holt Physical Science Chapter 6: Chemical Reactions
- Holt Physical Science Chapter 7: Solutions
- Holt Physical Science Chapter 8: Acids, Bases & Salts
- Holt Physical Science Chapter 10: Motion
- Holt Physical Science Chapter 11: Forces
- Holt Physical Science Chapter 12: Work & Energy
- Holt Physical Science Chapter 13: Heat & Temperature
- Holt Physical Science Chapter 14: Waves
- Holt Physical Science Chapter 15: Sound & Light
- Holt Physical Science Chapter 16: Electricity
- Holt Physical Science Chapter 17: Magnetism
- Holt Physical Science Chapter 18: Communication Technology
- Holt Physical Science Chapter 19: The Solar System
- Holt Physical Science Chapter 20: The Universe
- Holt Physical Science Chapter 21: Planet Earth
- Holt Physical Science Chapter 22: The Atmosphere
- Holt Physical Science Chapter 23: Using Natural Resources