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Ammar 89D Science Term 2, Properties, Example, Example, Example,…
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J.J. Thompson
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Why it existed: J. J. Thomson discovered the first subatomic particle, the electron, while researching cathode rays. To explain the neutrality of atoms, Thomson proposed a model of the atom in which negative electrons are scattered throughout a sphere of positive charge.
Ernest Rutherford
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Why it existed: Ernest Rutherford postulated the nuclear structure of the atom, discovered alpha and beta rays, and proposed the laws of radioactive decay.
Erwin Schrödinger
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Why it existed: Schrödinger combined the equations for the behavior of waves with the de Broglie equation to generate a mathematical model for the distribution of electrons in an atom.
Niels Bohr
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Why it existed: It came into existence with the modification of Rutherford's model of an atom. Rutherford's model introduced the nuclear model of an atom, in which he explained that a nucleus (positively charged) is surrounded by negatively charged electrons.
Definition
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A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
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