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they develop the theory that all metals are composed of mercury and sulfur and that it is possible to change base metals into gold.
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he created the atomic theory for the universe. what he did was he found out that everything is composed of atoms
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Plato introduced the atomic theory in which ideal geometric forms serve as atoms according to which atoms broke down mathematically into triangles, such that the form elements had the shape fire, air, water, earth.
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the four elements, Earth, Fire, Water, and Air he believed all substances were made of small amounts of these four elements of matter.
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he said the volume of a gas is decreased the pressure increases proportionally Understanding that his results could be explained if all gases were made of tiny particles Boyle tried to construct a universal corpuscular theory of chemistry.
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he clarified the concept of an element as a simple substance that could not be broken down by any known method of chemical analysis and he devised a theory of the formation of chemical compounds from elements.
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proposed that all matter was composed of atoms indivisible and indestructible building blocks While all atoms of an element were identical different elements had atoms of differing size and mass.
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he is the creator of the periodic table
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he was the first person to discover the electron
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the curies found out that Marie coined the term radioactivity for the spontaneous emission of ionizing penetrating rays by certain atoms.
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He showed that when quanta of light energy strikes atoms in the metal the quanta force the atoms to release electron
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he is known for his pioneering studies of radioactivity and the atom.
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he made numerous contribution to our understanding of atomic structure and quantum mechanics
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he found out that experimentally demonstrated that the major properties of an element are determined by the atomic number not by the atomic weight and firmly established.
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He dealt with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces.
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he found out that formulating quantum mechanics in terms of matrices and in discovering the uncertainty principle, which states that a particle's position and momentum cannot both be known exactly.
