Pres3

274 views

Published on

atms day 3

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
274
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Pres3

  1. 1. ATOMS Day 3 Thomson Rutherford & Bohr
  2. 2. ELECTRONS Atoms can be divided
  3. 3. ELECTRICITY What is it made of?
  4. 4. CATHODE RAY TUBE Strange effects http://www.youtube.com/watch?v=5gGddyFz3aQ
  5. 5. STILL USED Fluorescent bulbs and TV’s
  6. 6. J.J. THOMSON Put it all together
  7. 7. OBSERVATIONS Electrons come from atoms in metal Flow through CR Tube Magnets deflect (– charge) 2000x smaller than smallest atom (mass)
  8. 8. PLUM PUDDING Theory: Electrons spread evenly in squishy atom
  9. 9. NUCLEUS Atoms are mostly empty space
  10. 10. ERNEST RUTHERFORD It’s all about the Rutherfords
  11. 11. RADIOACTIVE Shoot out particles
  12. 12. SQUISHY ATOMS? Shoot stuff at it http://scratch.mit.edu/projects/dapontes/185225
  13. 13. SURPRISE! Some particles bounce back
  14. 14. NUCLEUS 100,000 x smaller than atom + charged center
  15. 15. NUCLEUS Rutherford Shoot radioactive stuff at atoms Bounces off something small Positively charged Electrons orbit
  16. 16. ORBITS Rules for where electrons go
  17. 17. NIELS BOHR As in boring – he’s Dutch
  18. 18. SPLIT LIGHT Different elements give off different colors
  19. 19. LANES Light released when electrons drop to lower orbit
  20. 20. ORBITALS Bohr Different elements give off different colors Energy is released as light Electrons orbit
  21. 21. CLOUDS Electrons not actually on paths http://www.youtube.com/watch?v=5gGddyFz3aQ
  22. 22. ATOMS Have electrons (– charged) Have nucleus (+ charged) Have orbitals (lanes for electrons)
  23. 23. BIBLIOGRAPHY http://upload.wikimedia.org/wikipedia/commons/9/92/Pile_de_Volta.jpg http://www.flickr.com/photos/toastforbrekkie/866114974/sizes/m/ http://www.flickr.com/photos/kristofor808/3408333283/sizes/l/in/set-72057594056034692/ http://www.flickr.com/photos/ladesign/4197918856/ http://www.flickr.com/photos/23325821@N04/4087596160/ http://crescentcityshapers.files.wordpress.com/2010/01/52831195_0504060006.jpg http://www.flickr.com/photos/ca_heckler/4087181226/sizes/l/

×