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Unit 8 Review

QuestionAnswer
What was Democritus' idea of an atom? Tiny particles called atoms
What was Aristotle's idea of an atom? 4 Elements; Air ,Fire ,Water, Earth 4 Properties; Hot, Cold, Dry, Wet
In you own words write down Dalton's atomic theory. Elements = Atoms/Atoms of same element are identical
Explain Thomson's experiment, what did he discover? He used cathode ray tube / discovered electrons
Explain Thomson's model of the atom. Dense positively charges bell with electrons inside
Explain Rutherford's experiment, what did he discover? Gold foil Experiment / discovered the nucleus
What is the symbol of a Proton? p+/H
What is the symbol of a Neutron? n
What is the symbol of a Electron? e-
What charge does a Proton have? +1 / Positive Charge
What charge does a Neutron have? No charge
What charge does a Electron Have? -1 / Negative Charge
How much mass does a Proton have? 1
How much mass does a Neutron have? 1
How much mass does a Electron have? 1 / 1836
What is an isotope? Different number of neutrons
What is an Ion? Gain or lose electrons
Explain Bohr's model of the atom. Atoms have orbitals, p+ and n found in nucleus
What subatomic particle is the atomic number equal to (Protons,Neutrons,Electrons)? Protons
What two subatomic particles determine the mass of an atom (Protons,Neutrons,Electrons)? Protons + Neutrons
What two subatomic particles are found in the nucleus (Protons,Neutrons,Electrons)? Protons + Neutrons
What two subatomic particles is found outside the nucleus (Protons,Neutrons,Electrons)? Electrons
Created by: JavonP
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