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Matter is made up of atoms that are indivisible and indestructible

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Proposed an "atomic theory" with spherical solid atoms based upon measurable properties of mass.

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It was that it claimed that all matter is composed of tiny indivisible atoms.

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Billiard Ball Model

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Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged

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Used a CRT to experimentally determine the charge to mass ratio (e/m) of an electron =1.759 x 10 8 coulombs/gram.

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Thomson realized that the accepted model of an atom did not account for negatively or positively charged particles.

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Plum Pudding

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Studied radiations emitted from uranium and named them alpha and  beta.He estimated atom size  and concluded mass was concentrated in the nucleus.

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Marsden experiment(s) (also called the Rutherford gold foil experiment) were a landmark series of experiments by which scientists discovered that every atom contains a nucleus where all of its positive charge and most of its mass are concentrated.

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He could not explain why negatively charged electrons remain in orbit, when they should instantly fall into the positively charged nucleus.

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Gold Foil Experiment.

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a theory of atomic structure in which the hydrogen atom (Bohr atom) is assumed to consist of a proton as nucleus, with a single electron moving in distinct circular orbits around it, each orbit corresponding to a specific quantized energy state

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Developed an explanation of  atomic structure that underlies regularities  of the periodic table of elements. His atomic model had atoms built up of sucessive orbital shells of electrons.

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It cannot predict the relative intensities of spectral lines

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Energy Level Model

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theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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Uses complex shapes of orbitals (sometimes called electron clouds), volumes of space in which there is likely to be an electron. So, this model is based on probability rather than certainty.

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Probability rather than certainty

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Cant find any.