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2007/08 Block Feeds on KET ED
- Block Feed: Programs 101-104 Program Details
- 3 hours, 59 minutes
- Friday, December 14 at 4:00 pm on KETED
- Friday, May 9 at 4:00 pm on KETED
- Block Feed: Programs 105-108 Program Details
- 3 hours, 59 minutes
- Friday, May 16 at 4:00 pm on KETED
Episodes Included in These Block Feeds
- 101. Session 1. What Is Matter? Properties and Classification of Matter
- Matter is all around us—it's what we and everything else are made of. Yet how do we define matter? What are the properties that set it apart from something that is definitely not matter, such as light? Participants build a working definition of matter, distinguish among the different forms it can take, investigate the difference between "essential" and "accidental" properties of matter, and look at the role of classification in science. 59 minutes.
- 102. Session 2. The Particle Nature of Matter: Solids, Liquids, and Gases
- What simple idea links together all of chemistry and physics? How can a close study of the macroscopic differences among solids, liquids, and gases support a microscopic model of tiny, discrete, and constantly moving particles? And how does the "particle model" help us predict how matter will behave under a wide range of conditions? 59 minutes.
- 103. Session 3. Physical Changes and Conservation of Matter
- In everyday life, observations that things "disappear" or "appear"—as when sugar is dissolved in a glass of water, or a pot of water on the stove boils away—seem to contradict one of the fundamental laws of nature: that matter can be neither created nor destroyed. But the principles of the particle model are actually consistent with conservation of matter. 59 minutes.
- 104. Session 4. Chemical Changes and Conservation of Matter
- Extends the particle model by looking inside the particles, exploring what really happens when two clear liquids are mixed together to produce a milky-white solid or when iron rusts. Other topics include some early chemical pioneers and how the law of conservation of matter applies even at the scale of atoms and molecules. 59 minutes.
- 105. Session 5. Density and Pressure
- What makes a block of wood rise to the surface of a bucket of water? Why do your ears pop when you swim deep underwater? Participants examine density, the constant motion of particles, and fluid pressure and look at how those forces explain the macroscopic phenomena of rising and sinking. 59 minutes.
- 106. Session 6. Rising and Sinking
- Generalizes the model about what rises and what sinks, using the idea of balance of forces, to explain why hot-air balloons rise and why ice rises in water but a lump of solid wax sinks in a jar full of molten wax. 59 minutes.
- 107. Session 7. Heat and Temperature
- What makes the liquid in a thermometer rise or fall? Which contains more heat—a boiling teakettle on the stove or a swimming pool of lukewarm water? Participants focus on the difference between heat and temperature, examining how both are defined in terms of particles, and investigate phenomena from why things expand when they are heated to the role temperature plays in changes of state. 59 minutes.
- 108. Session 8. Extending the Particle Model of Matter
- Extends the particle model to explain additional macroscopic phenomena, including the electrical properties of matter, and reviews the progression of ideas covered in the course. 59 minutes.
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