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1.National Astronomical Observatory of JapanNational Astronomical Observatory of Japan / National Institutes of Natural Sciences Solar Eclipse Viewing Guide Planning: International…

1. Chapter 4 Nuclear Chemistry 2. Background Radiation • 3/4ths of all exposure to radiation comes from background radiation. • Most of the remaining ¼ comes from medical…

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Slide 1 Matter Slide 2 1. Matter-Anything that takes up space and has mass. 2. Mass is the measure of the amount of matter an object contains. A balance measures mass Weight…

Slide 1 Matter Slide 2 Anything that has mass and takes up space (volume) –Examples: A brick has mass and takes up space A desk has mass and takes up space A pencil has…

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Slide 1 A. What is matter? Matter is anything that has mass and takes up space. Slide 2 B. Why is air matter but light is not? Air has mass and takes up space, while light…

Chapter 24 Radioactivity and Nuclear Reactions Henri Bequerel accidentally discovered radioactivity when he left some uranium salt in a desk drawer with a photographic plate.…

What is matter? A. What is matter? Matter is anything that has mass and takes up space. B. Why is air matter but light is not? Air has mass and takes up space, while light…