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develop the theory that all metals are composed of mercury and sulfur and that it is possible to turn metal to gold
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atoms are unbreakable into smaller parts, there is empty space between atoms
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He believed all matter was made up of individual particles. Believed there were 4 elements earth, fire, water, and air.
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elements had the following shape(fire) tetrahedron (air) octahedron (water) icosahedron(earth) (cube)
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Boyle mainly studied gases .
He also was able to tell the difference between a mixture and a compound . -
he came up with theory of elements. Elements are individual particles that can not be separated.
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- All elements are composed of atoms that are indivisible
- All atoms of the same element are identical
- Atoms of different are different they always have different numbers of protons and they may also differ in mass numbers
- Atoms of different Elements can combine with each other in simple whole number ratios to form compounds .
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He created the first periodic table Elements arranged by increasing weight .
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He discovered the electron.
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French physicists Pierre and Marie curie discovered the strongly radioactive elements polonium and radium which occur naturally in uranium minerals
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Proved there are atoms.
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determined the change of the electron using the ''oil - drop method"
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The gold foil Experiment He demonstrated that the atom has a small and dense nucleus
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He said electrons move only in certain orbits and that is why they emit light. Solar System Model of the Atom
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Mosely's Law says that is a relationship between wavelength and atomic number
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discovering the uncertainty principle , you don't know exactly where an electron is
