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he developed the theory that all matter consists of four elements earth,air,water, and fire.
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first proposed the exixtance of an ultimate particle
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he proposed the combustian theory and named oxygen and hydrogen.
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made the law of definate proportions.
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he stated that elements consisted of tiny particles called atoms.
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michael faraday developed the feild of theory of electromagnetism.
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he discovered the weight of an electron.
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discovered that some chemicals spontaneosly decompose.
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discovered the negativly chaarged electrons in the bcathaid raid tube.
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discovered that the strength of radiation did not depend on the compound.
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max planck devoloped the quantum theory
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he explained the special theory of relativity.
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described that the atom had a central positive nucleus surrounded by negative orbiting electrons
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made the legendary bohr model.
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chadwick joined rutherford to acomplishthe transmutation of light elements.