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the alchemist contributed to the atom by showingall metals are composed of mercury and sulfer and these are able to be transfered into gold.
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showed how atoms combine and hold together in so called "clusters" which showed they can be compressed
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made the four elements and didnt beleive in the atom theory. he believed that the four elements were the only concept.
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found that there were five regular solids. these solids are earth, air, fire, water, and quintessence.
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he showed that fixed gases can be compressed because the particles are so spread apart. he was the first modern chemist.
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showed how to seperate molecules from atoms.
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benjamin martin made this to show the motions of the planets
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he studied color blindness and how the atom controls it
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created the first elements of the periodic table
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electrons sourouded by positive charges or called thompsons plum pudding model
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discovered the negative charged electrons in an atom
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created the chemical concept of an an atomic number
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she found that atoms don't make things radioactive they are radioactive themselves
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albert created the existince of atoms
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did the oil drop experiment. this experiment showed the exact charge of an electron. he did this by putting forced electrons with changes in the motion of oil.
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he showed that a liquid drop provides a good representation of the atoms nucleus.
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werner heisenberg created this model of an atom. it shows the nucleus in a charged cloud.
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nucleus had a central positive energy and backed it up with a experiment.
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no atom or anything as such has a definite shape
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john dalton created the billard ball model which is the smallest particles made up
