Democritus -Greek philosopher 450 BC. Aristotle -born 384 BC -Greek philosopher, educator & scientist -student of plato.

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  • Slide 1
  • Democritus -Greek philosopher 450 BC
  • Slide 2
  • Aristotle -born 384 BC -Greek philosopher, educator & scientist -student of plato
  • Slide 3
  • Lavoisier -French chemist 1700s -Law of Conservation of Mass
  • Slide 4
  • 2 Mg + O 2 2 MgO 10.0g 6.58g 16.58g
  • Slide 5
  • Joseph Proust -1754-1826 -French Chemist -Law of Definite Proportions H20H20 Looking at
  • Slide 6
  • JohnDalton -English school teacher & scientist -Early 1800s -Atomic Theory of Matter -Law of Multiple Proportions
  • Slide 7
  • Daltons Periodic Chart
  • Slide 8
  • Daltons Model of an Atom
  • Slide 9
  • William Crookes -1832-1919 -English Chemist -developed the cathode ray tube
  • Slide 10
  • Cathode Ray Tube in Action Cathode Ray Tubes
  • Slide 11
  • Slide 12
  • Michael Faraday -1791-1867 -English chemist and Physicist -Electromagnetic induction Induction
  • Slide 13
  • Ben Franklin -1706-1790 -scientist, inventor, statesman -looked at electrical charges
  • Slide 14
  • Chadwick -studied alpha particles to discover neutrons
  • Slide 15
  • -English physicist early 1900s -Worked with cathode ray tubes JJ Thomson
  • Slide 16
  • Electron Beam in CRT
  • Slide 17
  • + - + + + + + + - - - - - Plum Pudding Model
  • Slide 18
  • Ernest Rutherford -New Zealand Scientist early 1900s -Alpha scattering experiment
  • Slide 19
  • Slide 20
  • 98% of the particles passes straight through 2% of the particles deflected off at varying angles 0.01% of the particles bounced straight back
  • Slide 21
  • + - + + ++ ++ - - - - - Rutherfords Model of an atom
  • Slide 22
  • Max Planck -German Physicist -1858-1947 -studied light emitted from objects
  • Slide 23
  • E = h v Plancks Theory What does it mean?
  • Slide 24
  • Photoelectric Effect
  • Slide 25
  • Albert Einstein -1879-1955
  • Slide 26
  • Niels Bohr -Danish physicist early 1900s -Used Rutherfords planetary idea -Used Planks idea of quanta
  • Slide 27
  • Planetary model of an atom
  • Slide 28
  • Robert Millikan -1868-1953 -American physicist
  • Slide 29
  • Milikans Oil Drop Experiment On-line Model
  • Slide 30
  • Werner Heisenberg -1901-1976 -Uncertainty Principle
  • Slide 31
  • Erwin Schrodinger Whats that? Sign your planner? Were talking quantum mechanics here folks
  • Slide 32
  • Schrodinger wave model of an atom orbitron
  • Slide 33
  • Henri Becquerel Marie and Pierre Curie
  • Slide 34
  • Henry Moseley -1887-1915 -Rutherfords student

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