​Atomic Structure

​Protons: Positive Charge, DO NOT move within matter

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​Neutrons: No charge, neutral. DO NOT move within matter

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​Electrons: Negative Charge, orbit the nucleus

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​•charge: a fundamental property of matter

–measured in COULOMBS (C) or ELEMENTARY CHARGE (e)

•

•charge on an object is carried by particles

​–Electron

•-1.6 x 10-19 coulombs

•-1e

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–Proton

•+1.6 x 10-19 coulombs

•+1e

•

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–

​Jump over to slide 4 of the ppt

​Charged Objects

​Because objects can only gain or lose electrons, the only charges that are allowed are multiples of the ELEMENTARY CHARGE

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​Neutral plate: # protons = # electrons

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​Charged plate: # protons not equal to # electrons

​Jump to slide 5 on ppt

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​Law of Conservation of Charge

​•The total amount of charge in a closed system remains constant – charge is not created or destroyed, it only moves from one object to another

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•Charge “moves” as a result of ELECTRON movement ONLY!!!

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