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

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

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