scientists + their theories

• Dalton


  Ball model; an atom. can be broken into proton, electron, neutrons. each element has identical atom. diff element = diff atom. Atoms are not created or destroyed. compounds formed when atoms are combined.
• JJ Thompson


  Raisin bun model; positively charged atom (bun) with negatively charged electrons scattered in it (raisins). even distribution of charges
• Rutherford


  "flower model". atoms = mostly empty space. dense positive centers. electrons circling around. discovered by using gold foil.
• Bohr


  current model. nucleus in center (positively charged) by protons and neutrons. =electrons circling around in specific ENERGY LEVELS. (2,8,8,18)