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it is the 4 major elements being water, air, fire, earth. and also that you can change basic substances into different substances.
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he is the Greek philosopher that made the theory of the universe. he also made the atomic theory that we still use today.
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there are 5 regular solids. solves that all objects in the material world are all distinct.
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he discovered that atoms have to exist because of the relationship of the pressure and the gas.
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He was a French chemist he made the concept that an element is a simple substance that cant be broken down.
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he developed the atomic theory that modern physical science is founded- it says that the matter is composed and made of atoms and weight. and the combine in rations determined by weight.
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he made the first periodic table arranging them in order by atomic number and weight.
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he discovered the electron. he also changed the atomic model from what it used to be.
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one of the main things they found was that atoms are radioactive.
they also measured radium, polonium, and uranium. -
he was one of the people who helped with the atomic bomb. found that it works by splitting an atom by dropping a particle on the atoms nucleus.
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the experiments to determine the electric charge are carried by a single electron.
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he discovered that major properties of an element are determined by the atomic number.
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he is a Nobel prize winner for physics because of his discoveries on the atomic structure.
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he made the uncertainty principle. it is possible to the find the exact spot and momentum of an a particle.