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England physicist who showed the nucleus of the atom contained no charge or a neutron. A neutron almost has the same mass as a proton
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Helped increase our new knowledge of the structure of the atom. Worked on Manhattan project-1st atomic bomb
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In other experiments Rutherford determined that inside the NUCLEUS of the atom was a small paticle called PROTON that had a charge of +1.
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American physicist that determined the charge of an electron (-1) and the mass of an electron=1/1840 the mass of a hydrogen atom
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Thompson came up with the theory of the atom that electrons were like negatively charged "plums" in a positively charged "pudding" . Which meant the whole atom was neutral.
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discovery of a mysterious, powerful type of radiation called X-Rays. These powerful rays of energy could get through skin. The first medical x-ray machine was used in 1896
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Cathode rays were really negatively charged particles smaller than an atom which he called electrons. The England physicist discovered this
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Discovered the cathode ray tube. When the tubes were connectedwith a voltage, these rays could be seen flowing across the tube in a glowing fashion (from cathode (-) towards the anode(+).) Cathode tubes are now tv tubes
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A man from New Zealand conducted the gold foil experiment which disproved the plum pudding model and proved that the atom has a very small positive charged nucleus (and the rest of it was empty space)!
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A scientist from Poland who won 2 nobel prizes 1 in physics and 1 in chemistry. a record that hasnt been broken yet today. 1st to use the word radiation to desctibe the weird energy source that came from some types of atoms (radioactive isotopes) discovered Radium and Polonium. And 1st to use radioactive materials to treat cancers.
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English teacher who discovered modern atomic theory by experimentation
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Father of modern chemistry discovered law of conservation of mass, named O and H, discovered metric system, wrote 1st list of elements. Lost head literally in French Revolution. Married 13 year old Marie Lavoisier, who helped him in lab
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tried to turn other elements into gold. An important chemist who helped establish experimental design in chemistry
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1st man to propose that matter was made up of small particles called atoms: that cant be made, or destroyed, or divided
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thought matter was earth, wind, water, or fire which was incorrect.
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