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Electric Charge

Electric Charge. Ms. Moore 11/1/12. Positive and Negative Charge. Why does walking across a carpeted floor and then touching something sometimes result in a shock? electric charge Atoms: smallest particle of an element Atoms contain particles called protons, neutrons, and electrons

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Electric Charge

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  1. Electric Charge Ms. Moore 11/1/12

  2. Positive and Negative Charge • Why does walking across a carpeted floor and then touching something sometimes result in a shock? • electric charge • Atoms: smallest particle of an element • Atoms contain particles called protons, neutrons, and electrons • Protons: positive charge • Neutrons: no charge • Electrons: negative charge • Atoms have = number of protons and neutrons • Objects with no net charge = electrically neutral

  3. Transferring Charge • Electrons can be bound more tightly to some atoms and molecules. • Electrons in soles of shoes are bound more tightly then those on carpet…so, they are transferred to your soles. • Soles become more negatively charged • Static Electricity: accumulation of excess electric charge on an object

  4. Conservation of Charge • Like energy, when an object becomes charged, charge is neither created nor destroyed. • Law of Conservation of Charge: charge can be transferred from object to object, but it cannot be created or destroyed

  5. Charges Exert Force • Static cling, anyone? They cling together because of the forces electric charges exert on each other • Opposites attract…like charges repel. • Distance matters • Farther apart = weaker force

  6. Mini Lab

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