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ATOMIC MASS Mendelev used atomic mass as a measurement for elements to help him order them into an organized chart. http://www.atomicarchive.com/Physics/Images/isotopes.jpg http://www.atomicarchive.com/Physics/Images/isotopes.jpg
CHEMICAL PROPERTIES All the elements in a particular column in the periodic table have similar chemical properties. http://www.theochem.tu-muenchen.de/welcome/images/stories/roesch_Abb_4.jpg
PLUM PUDDING MODEL The model of the atom was updated to the Plum Pudding model after the electron was discovered. http://www-outreach.phy.cam.ac.uk/camphy/nucleus/side1_nucleus.gif
PLANCK Planck recognized that light comes in packets of energy that are proportional to the light' s frequency. http://www.physics.gla.ac.uk/Physics3/Kelvin_online/Planck.gif
HEISENBERG He came up with the equation that you wrote on the quiz. http://www.physics.umd.edu/courses/Phys420/Spring2002/Parra_Spring2002/Images/Physicists_Big/Heisenberg_Big.jpg
GOLD-FOIL EXPERIMENT This procedure used alpha particles and a thin sheet of metal. http://www.daviddarling.info/images/Rutherford_gold-foil_experiment.jpg
CHADWICK He discovers a particle that has the same mass as a proton but has no charge. http://www.daviddarling.info/images/Chadwick_James.jpg
A BRIEF HISTORY OF MATTER AND LIGHT
