Scientist and atoms

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  • Daltons postulates state that all matter is made of atoms which are indivisible. elements are made of small particles called atoms. atoms of differ in size and mass. and it can not be broken down
  • Thomson's cookie dough experiment helped him with the understanding of electrons. Thomsons model shows that atoms are spheres which have a positive charge with negative electrons througout the cookie with are the chocalate chips.
  • Millikan determined the size of a charge of an electron.he also determined that there was a smaller unit charge. he determined all of this through his oil experiment. 
  • oil and metal experiment
  • he concluded that a tiny dense nucleus was causing the deflections when he did his gold foil experiment
  • gold foil experiment: positive particles are fired at gold foil, some pass through. his experiment led to the nuclear model of the atom
  • does everyone kmow who the first person to discover atoms was?
  • Democritus
  • do you know that the glass opposite of the electrodeds started to glow in jj thomsons experiment
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