Real+Men+of+Genius

today we salute you, Mr. creator of the first periodic table (Mr. creator of the 1st periodic table) without you, we wouldnt know the mass of the elements (mass of elements) some have bigger mass __(compared them by weights )__ __found there properties__ (found there prpoperteees) __even though you only shaved once a year__ (__shaved once a year__) so know that we salute you Mr. __dmitri mendeleev__, and know we speak for Science fans everywhere when we say, "The discovery of __mass and weight is awesome__!__"__ __(Mr. __Dmitri mendeleev)__

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What is in the nucleus? - protons and neutrons Which two particles have weight? - protons and neutrons ||
 * SCIENTIST || FACTS ||
 * Henry Mosely || # .created the atomic number ||
 * Robert Millikan || # .measured the charge of an electron ||
 * Dimitri Mendeleev || # .first version of the periodic table ||
 * James Chadwick || # .found the neutron ||
 * Ernest Rutherford || # . discovered concept of radio activity ||
 * J.J. Thomson || # . found electrons ||
 * Democritus || # .Stated that atoms are the smallest part of anything ||
 * Aristotle || # .found the scientific method ||
 * John Dalton || # .Made the atomic theory ||
 * Niels Bohr || Where are electrons? - in a cloud around atoms