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They searched for the Philosophers stone, which could turn simple materials into valuable substances like gold.
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Greece-- Democritus stated that all matter is made up of atoms, and that atoms are eternal and invisible and so small that they can’t be divided, and they fill up the space they’re in.
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Greece- provided the method of gathering scientific facts, which proved as the basis of scientific work.
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Proposed a mechanical universe with small solid masses in motion.
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France - Provided the formula for the conservation of matter in chemical reactions; he distinguished between an element and a compound.
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France- made Coulomb's law, stating that the force between two electrical charges is proportional to the product of the charges and inversely proportional to the square of the distance between them, one of the main forces involved in atomic reactions.
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England- Dalton formed the atomic theory, stating that all matter is composed of atoms that are all alike and have the same atomic weight.
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England - He created the Crookes’ tube and demonstrated that cathode rays travel in straight lines and produce phosphorescence and heat when they strike certain materials.
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Germany - discovered x-rays while experimenting with cathode-ray tubes.
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England- He developed the plum-pudding model of the atom and discovered the electron.
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France - discovered radium and polonium when they started to investigate radioactive substances.
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Germany- PLanck started the quantum theory.
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USA- found out the electric charge of the electron.
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England- used the results of his gold-foil experiment to state that all the mass of an atom was in a small postievely-charged ball at the center of the atom.
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Denmark- Said that electrons moved around the nucleus in sucessively large orbits. presented the Bohr model, stating tjat atoms absorb or emit radiation only when the electrons jump between allowed states.
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England - discovered the neutrally-charged neutron.
