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ATOM - Coggle Diagram
ATOM
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MODELS
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I learned about J.J. Thomson is that he provided the first hint that an atom is made of even smaller particles.
Using a cathrode tube, Thomson was able to deflect cathrode rays with an electrical field. 
The rays bent toward the positive pole, indicating that the are negatively charged.
In conclusion, J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."
I learned J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons
Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup.
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I discovered Neil Bohr proposed that electrons revolved sround the cenral positive nucleus ( like planets in the solar system )
He proposed that electrons existed in distinct energy levels, or shells, around the nucleus and that each shell has a different amount of energy.
Bohr also concluded that the energy of an electron is quantized, meaning an electron can be in one energy level or another but not in between energy levels.
I discovered that Heisenberg and Schrodinger contribute to the current electron cloud model of the atom.
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I learned that electrons are in probability zones called "orbitals", not orbits and the location cannot be pinpointed.
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Structure
I learned the 3 known subatomic
particles are the proton, neutron, and electron.
The neutron is a subatomic particle, symbol n or n⁰ , which has a neutral charge, and a mass slightly greater than that of a proton.
The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
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The atomic mass (A) is the mass of the nucleus,
measured in amu.
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I learned about Definite Proportions the fact that a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound.
I learned that an ion is an atom or molecule that has a different number of electrons than protons, so it has a charge.
I learned that Isotapes is an atom of the same element with different mass number.
I learned Average Atomic Mass is weighted average of all isotapes.
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