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

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 23 11 Na  Sodium-23 has ____ protons, ___ electrons and ____ neutrons

45. Practice

46. 32 16 S

47. 28 14 Si

48. 14 6 C