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NS1300 – Emergence of Modern Science

NS1300 – Emergence of Modern Science. The Atom. If you cut something in half, then half again, then half again, and so on, do you ever get to a point where you can’t cut stuff up into anything smaller?. What is stuff made of, anyway? Can we make our own stuff? What are metamaterials ?

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NS1300 – Emergence of Modern Science

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  1. NS1300 – Emergence of Modern Science The Atom

  2. If you cut something in half, then half again, then half again, and so on, do you ever get to a point where you can’t cut stuff up into anything smaller? • What is stuff made of, anyway? • Can we make our own stuff? • What are metamaterials? • What other new materials are on the horizon?

  3. The Atom • Atomism • The Exile of the Atom • The atomic renaissance • The search for the periodic table

  4. Discovering the Atom • Gas laws • The law of definite proportions • Radioactivity • Brownian Motion • X-ray crystallography • Atomic microscopy

  5. Atom Models • Dalton’s Model • Rutherford’s Model • Bohr’s Model • Are any of them right?

  6. Discovering the Elements • The story of the periodic table

  7. The Periodic Table Tells the Story

  8. The Making of an Atom • The nucleus • Protons • neutrons • Electron Shells • Electrons • Pauli Exclusion Principle • Electron levels • Valence • Quantum Mechanics

  9. Atoms and Light • Photoelectric Effect • Energy Levels are “quantized” • Photosynthesis

  10. Inside the Atom • The universe is mostly empty space • Atoms • Electrons • Electron Clouds • Nucleus • Protons • neutrons • E = mc2

  11. Atomic Mass • Atomic Number • Atomic Mass

  12. Nuclear Forces • Strong Force • Weak Force • Electromagnetic Force • Wherefore art thou Gravity?

  13. Isotopes • Stable Isotopes • Radioactive Isotopes

  14. Radioactivity • Alpha Decay • Beta Decay • Gamma Radiation

  15. Radiometric Dating • Half-Life • Decay Chains

  16. Nuclear Reactions • Fission • Fusion

  17. Quiz • 1. T or F, electrons are smaller than protons. • 2. T or F, the strong force produces gravity. • 3. T or F, isotopes have more or less protons than normal atoms of a specific element. • 4. T or F, fission occurs by the splitting of atomic nuclei. • 5. T or F, this is a accurate model of an atom:

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