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Agenda

Agenda. Review Elements Review Atomic Theory Song Atomic pictures Notes. Ag. silver. Ni. nickel. Cr. chromium. Cd. cadmium. Ti. titanium. Cu. copper. Sc. scandium. Fe. iron. Au. gold. V. vanadium. Mn. mangenese. Hg. mercury. Co. cobalt. Zn. zinc.

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Agenda

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  1. Agenda Review Elements Review Atomic Theory Song Atomic pictures Notes

  2. Ag silver

  3. Ni nickel

  4. Cr chromium

  5. Cd cadmium

  6. Ti titanium

  7. Cu copper

  8. Sc scandium

  9. Fe iron

  10. Au gold

  11. V vanadium

  12. Mn mangenese

  13. Hg mercury

  14. Co cobalt

  15. Zn zinc

  16. First to propose idea of atom Democritus

  17. Wrote out the first four point atomic theory Dalton

  18. Found the e- Thomson

  19. Experimented with cathode ray tubes Thomson and Goldstein

  20. Thomson’s plum pudding

  21. Found the electrical charge of the e- Millikan

  22. Did the oil drop experiment Millikan

  23. Did the gold foil experiment Rutherford

  24. Found the proton Goldstein

  25. Found the nucleus Rutherford

  26. Found the neutron Chadwick

  27. Atomic Theory Polka • Dalton, Thomson, Rutherford and Bohr. Schrödinger and Heisenberg, and many, many more. Used their brains to venture in the realm of inner space and found the world of the atom was a weird and wondrous place.

  28. Dalton did experiments and said, “I think it’s clear, atoms are tiny indestructible spheres.”

  29. Thomson worked with cathode rays and said, “I disagree. A plum-pudding model makes much more sense to me.” A new chapter in atomic theory started to unfold.

  30. When Rutherford played around with atoms made of gold. When a few of his alpha particles came bounding back, he hypothesized a nucleus had knocked them off the track.

  31. Dalton, Thomson, Rutherford and Bohr. Schrödinger and Heisenberg, and many, many more. Used their brains to venture in the realm of inner space and found the world of the atom was a weird and wondrous place.

  32. Bohr saw spectral lines for hydrogen and said, “It seems to me.. Electrons move in orbits with specific energies.”

  33. Heisenberg said, “Forget it, there’s no way to know the orbit or a path, where the electron’s gonna go.”

  34. Schrödinger used lots and lots of fancy mathematics, and made a model of the atom based on quantum mechanics. It has orbitals and those are based on probability. The atom is a fuzzy blob of pure uncertainty.

  35. Dalton, Thomson, Rutherford and Bohr. Schrödinger and Heisenberg, and many, many more. Used their brains to venture in the realm of inner space and found the world of the atom was a weird and wondrous place.

  36. Pictures • Cut out and tape or glue these pictures in to the appropriate sections of your notes

  37. What do you know about atom?

  38. How Atoms Differ Date:

  39. PROTONS p+ In the nucleus +1 charge 1 amu ELECTRON e- In electron cloud -1 charge 1/1840 amu NEUTRON no In the nucleus No charge 1 amu Subatomic Particles

  40. Atomic number • Used to arrange elements in PT by Mosley • # of PROTONS • # of ELECTRONS IF an ATOM

  41. Isotopes • Atoms of the same element that differ in the # of neutrons

  42. Atomic Mass • The weighted average of all isotopes. • Always a decimal (unless a man-made element)

  43. Mass number • Mass of an isotope • Always a whole number – not on PT • # of PROTONS + NEUTRONS

  44. Nuclide • Tells atomic # and mass # of an atom 2311Na • Sodium-23 has ____ protons, ___ electrons and ____ neutrons

  45. Practice

  46. 3216S

  47. 2814Si

  48. 146C

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