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Aristotle did not believe the atomic theory. He believed that everything on earth was made up of the four elements, fire, water, air, and earth.
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Creation of a theory stating that all metals are made of mercury and sulfur.
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He discovered that atoms were tiny particles that made up everything around us. At this time people thought he was crazy.
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He was opposed to Aristotle's theory of elements. He believed that you could not simply split elements using chemistry.
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He created the first solid atomic theory.
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Created a table of elements, categorized the elements into families.
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You can see electrons, and they are in atoms. Therefore you can see atoms.
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He was against the theory of electrons having charges
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He created the Bohr model of the atom, positive nucleus with negative electrons surrounding it.
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Rutherford was the scientist who created the gold leaf experiments, while Geiger was his lab assistant. They shot an alpha particle at a gold leaf and determined that the atom has a thick could of electrons.
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He discovered that neutrons have half the mass of an atom.
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